ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

POWER SUPPLY









100-240V Wide Range Input
NEC Class 2 Compliant
Adjustable Output Voltage
Efficiency up to 77.2%
Compact Design, Width only 22.5mm
Full Output Power Between -10°C and +60°C
Large International Approval Package
3 Year Warranty

GENERAL DESCRIPTIONSHORT-FORM DATA

A compact size, light weight, simple mounting onto the
DIN-rail and the utilization of only quality components
are what makes the MiniLine power supplies so easy to
use and install within seconds.

Output voltage
Adjustment range
Output current
Output power
Output ripple
Input voltage
Mains frequency
AC Input current
Power factor
AC Inrush current

DC 5V
5 – 5.5V
3A at 5V
15W
< 50mVpp
AC 100-240V
50-60Hz0.28 / 0.17A
0.51 / 0.44
typ. 16 /31A

DC Input
Efficiency
LossesTemperature range
Derating
Hold-up time
Dimensions
Weight88-375Vdc
76.8 / 77.2%
4.6 / 4.5W
-10°C to +70°C
0.4W/°Ctyp. 45 / 186ms
22.5x75x91mm
130g / 0.29lb

A rugged electrical and mechanical design as well as ahigh immunity against electrical disturbances on themains provides reliable output power. This offers
superior protection for equipment which is connectedto the public mains network or is exposed to a criticalindustrial environment.
The MiniLine series offers output voltages from 5 to
56Vdc and a power rating from 15W to 120W.

ORDER NUMBERS
Power Supply

ML15.051

20Hz to 20MHz-15% / +10%
±6%
at 120 / 230Vac
at 120 / 230Vac
peak value at
120/230Vac, 40°C
and cold startat 120 / 230Vac
at 120 / 230Vac
operational+60 to +70°C
at 120 / 230Vac
WxHxD

MARKINGS
5V Standard unit

UL 508

UL 60950-1

Class I Div 2

IEC 60950-1

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

1/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

INDEX
Page
1. Intended Use .......................................................3
2. Installation Requirements ...................................3
3. AC-Input...............................................................5
4. DC-Input...............................................................6
5. Input Inrush Current ...........................................6
6. Output .................................................................7
7. Hold-up Time .......................................................8
8. Efficiency and Power Losses................................9
9. Functional Diagram...........................................10
10. Front Side and User Elements ...........................10
11. Terminals and Wiring ........................................11
12. Lifetime Expectancy and MTBF.........................11
13. EMC ....................................................................12
14. Environment ......................................................13
15. Protection Features ...........................................14
16. Safety Features ..................................................14
17. Dielectric Strength ............................................15Page
18. Approvals and Fulfilled Standard .................... 16
19. Regulatory Compliance .................................... 18
20. Physical Dimensions and Weight ..................... 19
21. Application Notes ............................................. 20
21.1. Peak Current Capability ........................... 20
21.2. Back-feeding Loads .................................. 20
21.3. External Input Protection ......................... 2121.4. Parallel Use to Increase Output Power .... 2121.5. Parallel Use for Redundancy .................... 2221.6. Series Operation ....................................... 2221.7. Inductive and Capacitive Loads................ 2221.8. Operation on Two Phases ........................ 23
21.9. Use Without PE on the Input ................... 2321.10. Use in a Tightly Sealed Enclosure ............ 24
21.11. Mounting Orientations ............................ 25

The information presented in this document is believed to be accurate and reliable and may change without notice.
The housing is patent by PULS (US patent No US D442,923S)
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.

TERMINOLOGY AND ABREVIATIONSPE andsymbolPE is the abbreviation for Protective Earth and has the same meaning as the symbol.

Earth, Ground

This document uses the term “earth” which is the same as the U.S. term “ground”.

T.b.d.

To be defined, value or description will follow later.

AC 230V

A figure displayed with the AC or DC before the value represents a nominal voltage withstandard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)

230VacA figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.

50Hz vs. 60Hz

As long as not otherwise stated, AC 100V and AC 230V parameters are valid at 50Hz and AC
120V parameters are valid at 60Hz mains frequency.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

2/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

1. INTENDED USEThis device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control,
process control, monitoring and measurement equipment or the like.
Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without
additional appropriate safety devices, that are suited for the endapplication.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.

2. INSTALLATION REQUIREMENTS
Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the device. Other
mounting orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that aredesigned for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient
temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter
the terminal connection. Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
The housing of the device provides a degree of protection of IP20. The housing does not provide protection against spilledliquids.
The isolation of the device is designed to withstand impulse voltages of overvoltage category III according to IEC 60664-1.
The device is designed as “Class of Protection” I equipment according to IEC 61140. Do not use without a proper PE(Protective Earth) connection.
The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage between the input terminal
and the PE potential must not exceed 300Vac.
The input can also be powered from batteries or similar DC sources. The continuous voltage between the supply voltage and
the PE/ground potential must not exceed 375Vdc. Connect the +pole to L and the -pole to the N terminal.
A disconnecting means shall be provided for the input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not coverventilation grid!
The device is designed for altitudes up to 5000m (16400ft). Above 2000m (6560ft) a reduction in output current and overvoltage category is required.
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 0mm left and right side. Increase
the 0mm to 15mm in case the adjacent device is a heat source.
The device is designed, tested and approved for branch circuits up to 20A without additional protection device. If an externalfuse is utilized, do not use circuit breakers smaller than 6A B- or 3A C-Characteristic to avoid a nuisance tripping of the circuit
breaker.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or
surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.

WARNING

Risk of electrical shock, fire, personal injury or death.

- Do not use the power supply without proper grounding (Protective Earth). Use the terminal on the input block for earth
connection and not one of the screws on the housing.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Make sure that the wiring is correct by following all local and national codes.
- Do not modify or repair the unit.
- Do not open the unit as high voltages are present inside.
- Use caution to prevent any foreign objects from entering into the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.
Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

3/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

Notes for use in hazardous location areas:
The power supply is suitable for use in Class I Division 2 Groups A, B, C, D locations.
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment.
Do not disconnect the unit or operate the voltage adjustment unless power has been switched off or the area isknown to be non-hazardous.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

4/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

3. AC-INPUT
AC input
AC input range

nom.

Allowed voltage L or N to earth
Input frequency
Turn-on voltage
Shut-down voltage

max.
nom.
typ.
typ.

AC 100-240V
85-264Vac
264–300Vac
300Vac50–60Hz
59Vac
54Vac

Input current (rms)Power factor *)Crest factor **)Start-up delay
Rise timeTurn-on overshoot

typ.
typ.
typ.
typ.
typ.
max.

AC 100V
0.34A
0.52
3.45
630ms
10ms
100mV

-15% / +10%, TN/TT/IT-mains
continuous operation< 0.5s±6%
steady-state value, see Fig. 3-1
steady-state value, see Fig. 3-1

AC 120V
0.28A
0.51
3.53
630ms
10ms
100mV

AC 230V
0.17A
0.44
3.94
630ms
10ms
100mV

at 5V, 3A see Fig. 3-3
at 5V, 3A see Fig. 3-4
at 5V, 3A
see Fig. 5 2
at 5V, 3A, see Fig. 3-2
see Fig. 3-2*) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit.
**) The crest factor is the mathematical ratio of the peak value to RMS value of the input current waveform.

Rated
input range

max.
500ms

Turn-onShut-down

POUT

Fig. 3-2 Turn-on behavior, definitions

IntputVoltage

VIN

54V 59V 85V

Start-up
delay

Rise
Time

264V 300Vac

Fig. 3-3 Input current vs. output load

Fig. 3-4 Power factor vs. output load

Input Current, typ.

0.4A
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0

- 5%

OutputVoltage

OvershootFig. 3-1 Input voltage range

Power Factor, typ.

a) 100Vacb) 120Vacc) 230Vac

a

0.55

b

0.50

a) 100Vacb) 120Vacc) 230Vac

a
b

0.45
c

c

0.40
0.35

Output Current

0

0.5

1.0

1.5

2.0

2.5

3.0A

0.30
0.5

Output Current

1.0

1.5

2.0

2.5

3.0A

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

5/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

4. DC-INPUT
DC input
DC input range
DC input current
Turn-on voltage
Shut-down voltage

nom.
typ.
typ.
typ.

DC 110-300V
88-375Vdc
0.16A / 0.057A
80Vdc
60Vdc

Instructions for DC use:a) Use a battery or similar DC source.
For other sources contact PULSb) Connect +pole to L and –pole to N.
c) Connect the PE terminal to an earth wire or to themachine ground.

Fig. 4-1 Wiring for DC Input

Battery

Power Supply

+

AC
L

internal
fused

+

N

-

PE
-

-20%/+25%
continuous operation
110Vdc / 300Vdc, at 5V, 3A
steady state value
steady state value

Load

DC

5. INPUT INRUSH CURRENTA NTC limits the input inrush current after turn-on of the input voltage. The inrush current is input voltage andambient temperature dependent.
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Inrush current
Inrush energy

max.
typ.
max.

AC 100V
13Apeak
11Apeak
0.1A2sAC 120V
16Apeak
13Apeak
0.1A2s

AC 230V
31Apeak
26Apeak
0.4A2s

40°C ambient, cold start
40°C ambient, cold start
40°C ambient, cold startFig. 5-1 Input inrush current, typical behavior

Fig. 5-2 Input inrush current, zoom into first peak

Input:
Output:Ambient:
Upper curve:
Lower curve:Time basis:

Input:
230VacOutput:5V, 3A
Ambient:
25°C
Input current curve: 5A/DIV, 500µs / DIV
Ipeak
23A

230Vac5V, 3A
25°C
Input current 5A/DIV
Input voltage 500V/DIV
10ms / DIV

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

6/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

6. OUTPUT
Output voltage
Adjustment range

nom.
max.

Factory settingLine regulation
Load regulation
Ripple and noise voltage
Output capacitance
Output current

max.
max.
max.
typ.
nom.
nom.
nom.
min.
max.

Output power
Short-circuit current*)

5V
5-5.5V
6V *)
5.1V
10mV
100mV
50mVpp
4 800µF
3A
2.72A
15W
hiccup mode
3A rms-current

guaranteed
at clockwise end position of potentiometer±0.2%, at full load, cold unit
85-264Vac
static value, 0A  3A
20Hz to 20MHz, 50Ohm
at 5V, see Fig. 6-1
at 5.5V, see Fig. 6-1
see Fig. 6-2
short circuit impedance <10mOhm, unit makes start-up
attempts at short-circuit (hiccup-mode)This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not aguaranteed value which can be achieved. The typical value which can be achieved by turning the potentiometer to the clock-wise end
position is 5.8V.
Fig. 6-1 Output voltage vs. output current,
typ.

Fig. 6-2 Hiccup mode; output current at
shorted output, 230Vac, typ.

Output Voltage

OutputCurrent

Adjustment
Range

6V

45ms

3.3A

5
4
Continuous
Hiccup Mode

3
2
1
0
0

0.5

1.0

1.5

2.0

t

0

Output Current

235ms
2.5

235ms

3.0 3.5A

Peak current capability (up to several milliseconds)
The power supply can deliver a peak current which is higher than the specified short term current. This helps to start
current demanding loads or to safely operate subsequent circuit breakers.
The extra current is supplied by the output capacitors inside the power supply. During this event, the capacitors will bedischarged and causes a voltage dip on the output. Detailed curves can be found in chapter 21.1.
Peak current voltage dips

typ.
typ.
typ.

from 5V to 2.4V
from 5V to 1.0V
from 5V to 0.8V

at 6A for 50ms, resistive load
at 15A for 2ms, resistive load
at 15A for 5ms, resistive load

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

7/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

7. HOLD-UP TIME
Hold-up Time

typ.
typ.

AC 100V
61ms
29.5msAC 120V
93ms
45ms

AC 230V
340ms
186ms

at 5V, 1.5A, see Fig. 7-1
at 5V, 3A, see Fig. 7-1

Note: At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is also on during this time

Fig. 7-1 Hold-up time vs. input voltage

Hold-up Time

150ms

a

b

c

Fig. 7-2 Shut-down behavior, definitionsdZero Transition
Input
Voltage125100a) 5V 1.5A typ.
b) 5V 1.5Amin.
c) 5V 3A typ.
d) 5V 3A min.

75
50
25

Hold-up Time

Input Voltage

0
85

120

155

190

- 5%

OutputVoltage

230VacNov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

8/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

8. EFFICIENCY AND POWER LOSSES
Efficiency
Power losses

AC 100V
75.8%
0.2W
2.3W
4.9W

typ.
typ.
typ.
typ.

Efficiency vs. output current at 5V,
typ.

Fig. 8-1

at 5V, 3A (full load)
at 0A
at 5V, 1.5A (half load)
at 5V, 3A (full load)

Losses vs. output current at 5V,
typ.

Fig. 8-2

5W

78%
77
76
75
74
73
72
71
70

c
b
a

a) 100Vacb) 120Vacc) 230Vac

0.5

1.0

1.5

2.0

4
3
2
1c

Output Current

0a0

2.5 3.0A

Efficiency vs. input voltage at 5V, 3A,
typ.

Efficiencyabca) 100Vacb) 120Vacc) 230Vacb

Output Current

Fig. 8-3

AC 230V
77.2%
0.6W
2.4W
4.5W

Power Losses

Efficiency

0

AC 120V
76.8%
0.3W
2.3W
4.6W

Fig. 8-4

0.5

1.0

1.5

2.0

2.5

3.0A

Losses vs. input voltage at 5V, 3A,
typ.

Power Losses

78%

5W

77

4.75

76

4.50

75

4.25

74

4.00

73

Input Voltage

72
85

120

155

190

225 260Vac

3.75
85

Input Voltage

120

155

190

225 260Vac

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

9/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

9. FUNCTIONAL DIAGRAM
Fig. 9-1 Functional diagram
DC
on

L
N
PE

Input Fuse&
Input Filter

Input
Rectifier&InrushLimiterPower
Converter

Output OverVoltage
Protection+-

OutputFilterOutputVoltage
Regulator

VOUT

10. FRONT SIDE AND USER ELEMENTS
Fig. 10-1 Front sideA

Output Terminals
Screw terminals,
Dual terminals for the negative pole allows an easy earthing of the output voltage+ Positive output- Negative (return) output

B

Input Terminals
Screw terminals
L
Phase (Line) input
N Neutral conductor input
PE (Protective Earth) inputC

DC-on LED (green)
On when the voltage on the output terminals is > 2V

D

Output voltage potentiometer
Turn to set the output voltage. Factory set: 5.1V

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

10/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

11. TERMINALS AND WIRING
All terminals are easy to access when mounted on the panel. Input and output terminals are separated from eachother (input below, output above) to help in error-free wiring.

Type
Solid wire
Stranded wire
American Wire Gauge
Wire stripping length
Screwdriver
Recommended tightening torqueInput
screw terminals
0.5-6mm2
0.5-4mm220-10 AWG
7mm / 0.275inch
3.5mm slotted or
Pozidrive No 2
1Nm, 9lb.in

Outputscrew terminals
0.5-6mm2
0.5-4mm220-10 AWG
7mm / 0.275inch
3.5mm slotted or
Pozidrive No 2
1Nm, 9lb.in

Instructions:a) Use appropriate copper cables that are designed for minimum operating temperatures of:
60°C for ambient up to 45°C and 75°C for ambient up to 60°C minimum.
b) Follow national installation codes and installation regulations!
c) Ensure that all strands of a stranded wire enter the terminal connection!
d) Up to two stranded wires with the same cross section are permitted in one connection point (except PE wire).
e) Do not use the unit without PE connection.
f) Screws of unused terminal compartments should be securely tightened.
g) Ferrules are allowed.

12. LIFETIME EXPECTANCY AND MTBF
These units are extremely reliable and use only the highest quality materials. The number of critical components suchas electrolytic capacitors has been reduced.

Lifetime expectancy *)MTBF **) SN 29500, IEC 61709
MTBF **) MIL HDBK 217F

AC 100V
66 000h> 15 years> 15 years
2 479 000h
4 066 000h
1 175 000h
1 575 000h

AC 120V
70 000h> 15 years> 15 years
2 838 000h
4 654 000h
1 251 000h
1 676 000h

AC 230V
93 000h> 15 years> 15 years
2 686 000h
4 405 000h
1 145 000h
1 534 000h

at 5V, 3A and 40°C
at 5V, 1.5A and 40°C
at 5V, 3A and 25°C
at 5V, 3A and 40°C
at 5V, 3A and 25°C
at 5V, 3A and 40°C; Ground Benign GB40
at 5V, 3A and 25°C; Ground Benign GB25

The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to thecapacitor’s manufacturer specification. The prediction model allows only a calculation of up to 15 years from date of shipment.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of adevice. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means thatstatistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.

*)Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

11/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

13. EMCThe power supply is suitable for applications in industrial environment as well as in residential, commercial and lightindustry environment without any restrictions. A detailed EMC report is available on request.
EMC Immunity
Electrostatic discharge
Electromagnetic RF field
Fast transients (Burst)
Surge voltage on input

Generic standards: EN 61000-6-1 and EN 61000-6-2
Contact discharge
EN 61000-4-2
Air discharge
EN 61000-4-3
80MHz-2.7GHz
Input lines
EN 61000-4-4
Output lines
EN 61000-4-5
LN
N  PE, L  PE
++  PE, -  PE
0.15-80MHz
0% of 100Vac
40% of 100Vac
70% of 100Vac
0% of 200Vac
40% of 200Vac
70% of 200Vac

Surge voltage on output

EN 61000-4-5

Conducted disturbance
Mains voltage dips

EN 61000-4-6
EN 61000-4-11

Voltage interruptions
Input voltage swells
Powerful transients

EN 61000-4-11
PULS internal standard
VDE 0160
over entire load range

8kV
8kV
10V/m
4kV
2kV
2kV
4kV

Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A

500V
2kV
10V
0Vac, 20ms
40Vac, 200ms
70Vac, 500ms
0Vac, 20ms
80Vac, 200ms
140Vac, 500ms
0Vac, 5000ms
300Vac, 500ms
750V, 1.3ms

Criterion A
Criterion A
Criterion A
Criterion A
Criterion C
Criterion A
Criterion A
Criterion A
Criterion A
Criterion C
Criterion A
Criterion A

Criterions:
A: Power supply shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. Power supply may shut-down and restarts by itself. No damage or hazards for the power supply
will occur.

EMC Emission
Conducted emission
Radiated emission
Harmonic input current

Generic standards: EN 61000-6-3 and EN 61000-6-4
EN 55011, EN 55032, FCC Part 15, CISPR 11, CISPR 32
EN 55011, EN 55032
EN 61000-3-2Class B, input lines
Class BNot applicable below 75W
input power
fulfilled

Voltage fluctuations, flicker EN 61000-3-3This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) thisdevice must accept any interference received, including interference that may cause undesired operation.
Switching frequency

Constant, typ. 65kHz

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

12/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

14. ENVIRONMENT
Operational temperature *)Storage temperature
Output de-rating
Humidity **)Vibration sinusoidal
Shock
Altitude
Altitude de-rating
Over-voltage category-10°C to +70°C (14°F to 158°F)-40 to +85°C (-40°F to 185°F)
0.4W/°C
5 to 95% r.H.
2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
30g 6ms, 20g 11ms
3 bumps / direction, 18 bumps in total
0 to 6000m (0 to 20 000ft)

Reduce output power according Fig. 14-1
For storage and transportation
60-70°C (140°F to 158°F)
IEC 60068-2-30
IEC 60068-2-6
IEC 60068-2-27
Reduce output power or ambient temperature
above 2000m sea level.
above 2000m (6500ft), see Fig. 14-2
IEC 62103, EN 50178, altitudes up to 2000m
Altitudes from 2000m to 6000m
IEC 62103, EN 50178, not conductive

1W/1000m or 5°C/1000m
III
II
2

Degree of pollution*) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit.
**) Do not energize while condensation is present

Fig. 14-1 Output power vs. ambient temp.

Fig. 14-2 Output power vs. altitude

Allowable
Output Power

Allowable
Output Power

15W

15W

12.5

12.5

10.0

10.0

7.5

7.5

5.0

5.0

2.5
-10

0

20

40

A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 40°C

2.5

Ambient Temperature

0

A

0

2000

C

Altitude0
60 70°C

B

4000

6000m

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

13/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

15. PROTECTION FEATURES
Output protection
Output over-voltage protection

Output over-current protection
Degree of protection
Penetration protection
Over-temperature protection
Input transient protection
Internal input fuse*)

Electronically protected against overload, no-load and short-circuits *)typ. 8.7Vdc
In case of an internal power supply fault, a redundantmax. 9.6Vdc
circuit limits the maximum output voltage. In such acase, the output shuts down and stays down until the
input voltage is turned off and on again.
electronically limited
see Fig. 6-2
IP 20
EN/IEC 60529> 2.5mm in diametere.g. screws, small parts
Not included
MOV
Metal Oxide Varistor
T3.15A H.B.C.
not user replaceable

In case of a protection event, audible noise may occur.

16. SAFETY FEATURES
Input / output separation *)Class of protection
Isolation resistance
Touch current (leakage current)

*)

SELV
PELV
I
II (with restrictions)> 5MOhmtyp. 0.17mA / 0.38mA
typ. 0.24mA / 0.55mA
typ. 0.40mA / 0.86mA< 0.21mA / 0.44mA< 0.30mA / 0.66mA< 0.54mA / 1.08mA

IEC/EN 60950-1
IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41
PE (Protective Earth) connection required
for use without PE connection contact PULS
Input to output, 500Vdc
100Vac, 50Hz, TN-,TT-mains / IT-mains
120Vac, 60Hz, TN-,TT-mains / IT-mains
230Vac, 50Hz, TN-,TT-mains / IT-mains
110Vac, 50Hz, TN-,TT-mains / IT-mains
132Vac, 60Hz, TN-,TT-mains / IT-mains
264Vac, 50Hz, TN-,TT-mains / IT-mains

Double or reinforced insulation

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

14/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

17. DIELECTRIC STRENGTH
The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies thevoltage with a slow ramp (2s up and 2s down). Connect all phase-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table below.

Type test

60s

A
2500Vac

B
3000Vac

C
500Vac

Input

Factory test

5s

2500Vac

2500Vac

500VacL
N

Field test

5s

2000Vac

2000Vac

500Vac

> 6mA

> 6mA

> 1mA

Fig. 17-1 Dielectric strength

B
OutputA

Earth, PE+C-

Cut-off current setting

To fulfill the PELV requirements according to EN60204-1 § 6.4.1, werecommend that either the + pole, the – pole or any other part ofthe output circuit shall be connected to the protective earthsystem. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

15/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

18. APPROVALS AND FULFILLED STANDARD
UL 508

IEC 60950-1

UL 60950-1

Class I Div 2UL Certificate
Listed equipment for category NMTR - Industrial Control
Equipment and Fulfilled Standard
Applicable for US and Canada
E-File: E198865
CB Scheme Certificate
General safety requirements for Information Technology
Equipment (ITE)UL Certificate
Recognized component for category QQGQ - Information
Technology Equipment (ITE)
Applicable for US and Canada
E-File: E137006
CSA Certificate
Power Supplies for Hazardous Location
Applicable for Canada and US
CSA Class: 5318-01 (Canada), 5318-81 (USA)
Temperature Code: T4
Groups: A, B, C and D

NEC Class 2

Manufacturer's Declaration
NEC CLASS 2 – Limited Power Source
Listed device according to NEC Handbook chapter 725-121

Marine (DNV GL)

DNV-GL Certificate
DNV-GL Type approved product
Certificate: TAA00001ST
Temperature: Class B
Humidity: Class B
Vibration: Class C
EMC: Class A
Enclosure: Class A
ABS Design Assessment Certificate
ABS (American Bureau of Shipment) assessed product
Certificate: 17-HG1599236-PDA

Marine (ABS)IEC 60068-2-60

Manufacturer's Declaration (Online Document)
Environmental Tests, Flowing Mixed Gas Corrosion Test
Test Ke - Method 4
H2S: 10ppb
NO2: 200ppb
Cl2: 10ppb
SO2: 200ppb
Test Duration: 3 weeks, which simulates a service life of at least
10 years.

ISA-71.04-1985

Manufacturer's Declaration (Online Document)
Airborne Contaminants Corrosion Test
Severity Level: G3 Harsh
H2S: 100ppb
NOx: 1250ppb
Cl2: 20ppb
SO2: 300ppb
Test Duration: 3 weeks, which simulates a service life of atleast 10 years.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

16/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2
VDMA 24364

Paint Wetting Impairment Substances Test (or LABS-Test)
Tested for Zone 2 and test class C1 according to VDMA
24364-C1-L/W for solvents and water-based paints

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

17/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

19. REGULATORY COMPLIANCE
EU Declaration ofConformity

REACH Directive

EAC TR Registration

The CE mark indicates conformance with the- EMC directive- Low-voltage directive (LVD)- RoHS directive
Manufacturer's Statement
EU-Directive regarding the Registration, Evaluation,
Authorisation and Restriction of Chemicals
EAC Certificate
EAC EurAsian Conformity - Registration Russia, Kazakhstan
and Belarus
8504408200, 8504409000

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

18/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

20. PHYSICAL DIMENSIONS AND WEIGHT
WeightDIN-Rail

Installation Clearances

130g / 0.29lb
Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
The DIN-rail height must be added to the unit depth (91mm) to calculate the total required
installation depth.
See chapter 2

Fig. 20-1 Front viewFig. 20-2 Side viewNov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

19/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21. APPLICATION NOTES
21.1. PEAK CURRENT CAPABILITY
Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. The inrush current
demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal
output current (including the PowerBoost) The same situation applies, when starting a capacitive load.
Branch circuits are often protected with circuit breakers or fuses. In case of a short or an overload in the branch circuit,the fuse needs a certain amount of over-current to trip or to blow. The peak current capability ensures the safe
operation of subsequent circuit breakers.
Assuming the input voltage is turned on before such an event, the built-in large sized output capacitors inside thepower supply can deliver extra current. Discharging this capacitor causes a voltage dip on the output. The following
two examples show typical voltage dips:
Fig. 21-1 Peak loading with 2x the nominal
current for 50ms, typ.

Fig. 21-2 Peak loading with 5x the nominal
current for 5ms, typ.

Peak load 6A (resistive load) for 50ms
Output voltage dips from 5.1V to 2.4V.

Peak load 15A (resistive load) for 5ms
Output voltage dips from 5.1V to 0.8V.

21.2. BACK-FEEDING LOADS
Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called
return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).
The maximum allowed feed back voltage is 6.3Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitor which is specified in chapter 6.
This power supply is resistant and does not show malfunctioning when a load feeds back voltage to the power supply.
It does not matter, whether the power supply is on or off. However, please note that the output voltage can dip tozero for approximately 200ms if the back-feed voltage is removed.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

20/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21.3. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 20A. An external protection is only required, if the supplying
branch has an ampacity greater than this. Check also local codes and local requirements. In some countries local
regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 6A B- or 3A C-Characteristic breaker should be used.

Unit A

21.4. PARALLEL USE TO INCREASE OUTPUT POWER

AC+

ML15.051 power supplies can be paralleled to increase the output power. Thispower supply has no feature included which balances the load currentDC+
between the power supplies. Usually the power supply with the higher
Unit Badjusted output voltage draws current until it goes into current limitation. This
Load
ACmeans no harm to this power supply as long as the ambient temperature stays+
below 45°C. The ML15.051 can also be paralleled with power supplies from
MiniLine series with 5V output voltage. The output voltages of all powerDC
supplies shall be adjusted to the same value (±100mV). A fuse or diode on the
output of each unit is only required if more than three units are connected in parallel. If a fuse (or circuit breaker) isused, choose one with approximately 150% of the rated output current of one power supply. Keep an installation
clearance of 15mm (left / right) between two power supplies and avoid installing the power supplies on top of eachother. Do not use power supplies in parallel in mounting orientations other than the standard mounting orientation(input terminals on the bottom and output terminals on top of the unit). Pay attention that leakage current, EMI,
inrush current, harmonics will increase when using multiple power supplies.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

21/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21.5. PARALLEL USE FOR REDUNDANCYPower supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require acertain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in a N+1 method. E.g. five power supplies, each rated for 3A are paralleled to build a 12A
redundant system.
Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in
the secondary side of the power supply. In such a case, the defect unit becomes a load for the other power supplies
and the output voltage can not be maintained any more. This can only be avoided by utilizing decoupling diodes
which are included in the decoupling module MLY02.100.
Recommendations for building redundant power systems:a)

Use separate input fuses for each power supply.

b)

Monitor the individual power supply units.

c)

1+1 Redundancy is allowed up to an ambient temperature of 60°C
N+1 Redundancy is allowed up to an ambient temperature of 45°Cd)

It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.

21.6. SERIES OPERATION

Unit A

Power supplies of the exact same type can be connected in series for higherAC+
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
DCwith a potential above 60Vdc are not SELV any more and can be dangerous.
+
Such voltages must be installed with a protection against touching. Earthing ofUnit BLoadthe output is required when the sum of the output voltage is above 60Vdc.
AC
Avoid return voltage (e.g. from a decelerating motor or battery) which is+applied to the output terminals. Keep an installation clearance of 15mm (left /Earthright) between two power supplies and avoid installing the power supplies onDC
top of each other. Do not use power supplies in series in mounting
orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on
top of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple
power supplies.

21.7. INDUCTIVE AND CAPACITIVE LOADSThe unit is designed to supply unlimited inductive loads.
The max. capacitive load depend on the steady state output current. At 3A output current, the output capacity should
not be larger than 10 000µF and at 0.3A output current not larger than 25 000µF. In case of larger capacitors, the unit
can show start-up attempts or start-up problems.

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

22/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21.8. OPERATION ON TWO PHASESPower Supply

L1

AC

240V +10% max.

The power supply can also be used on two-phases of a three-phase-system.
Such a phase-to-phase connection is allowed as long as the supplying
voltage is below 240V+10%. Use a fuse or a circuit breaker to protect the N
input. The N input is internally not protected and is in this case connected
to a hot wire. Appropriate fuses or circuit breakers are specified in section
21.3 “External Input Protection”.

L3

L
Fuse

internal
fuse

N
PE
DC

L2

21.9. USE WITHOUT PE ON THE INPUT
From a safety standpoint, the unit is internally designed according to the requirements for Protection Class 1 and 2.
Please contact PULS if you do not plan to use the PE terminal. A different marking of the front foil is then required.
Grounding of the input is beneficial for a high EMI immunity: Symmetrical spikes or fast transients on the input side
can be conducted directly to earth by the built-in filter capacitors. The magnitude of such spikes or fast transients on
the output side caused by the input is much smaller compared to not connecting this terminal to ground.
Fig. 21-3 Earthed input

Fig. 21-4 Not earthed input

Surge

Spike

Surge

24V

L

Power Supply

+

L

-

N

X
N

Power Supply

+

X
-

Y

GroundNov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

23/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21.10. USE IN A TIGHTLY SEALED ENCLOSURE
When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher
than outside. In such situations, the inside temperature defines the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The power supply is placed in the middle of the box, no other heat producing items are inside the box
Enclosure:
Input:

Rittal Type IP66 Box PK 9510 100, plastic, 130x130x75mm
230VacCase A:
Load:
Temperature inside the box:
Temperature outside the box:
Temperature rise:

5V, 3A; load is placed outside the box
38.2°C (in the middle of the right side of the power supply with a distance of 1cm)
26.0°C
12.2K

Case B:
Load:
Temperature inside the box:
Temperature outside the box:
Temperature rise:

5V, 2.4A; (=80%) load is placed outside the box
35.3°C (in the middle of the right side of the power supply with a distance of 1cm)
25.6°C
9.7K

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

24/25

ML15.051
5V, 3A, SINGLE PHASE INPUT

MiniLine-2

21.11. MOUNTING ORIENTATIONSMounting orientations other than input terminals on the bottom and output on the top require a reduction incontinuous output power or a limitation in the max. allowed ambient temperature. The amount of reduction
influences the lifetime expectancy of the power supply. Therefore, two different derating curves for continuous
operation can be found below:
Curve A1
Curve A2

Recommended output current.
Max allowed output current (results in approximately half the lifetime expectancy of A1).

Fig. 21-5
Mounting
Orientation A(Standardorientation)

Output PowerOUTPUT

15W
12
9
6
3
0
10

Power
SupplyINPUT

Fig. 21-6
Mounting
Orientation B(Upside down)

20

30

40

50

60°C

INPUT

15W
12
9
6
3
0
10

A2
A1

Ambient Temperature

20

30

40

50

60°C

Power
SupplyOUTPUT

Output Power

15W
12
9
6
3
0
10

A2
A1

Ambient Temperature

20

30

40

50

60°C

Output PowerOUTPUT

Power
Supply

INPUT

15W
12
9
6
3
0
10

A2
A1

Ambient Temperature

20

30

40

50

60°C

INPUT

Power
SupplyOutput PowerOUTPUT

Fig. 21-9
Mounting
Orientation E(Horizontal ccw)

Ambient Temperature

Output Power

Fig. 21-7
Mounting
Orientation C(Table-top
mounting)

Fig. 21-8
Mounting
Orientation D(Horizontal cw)

A1

15W
12
9
6
3
0
10

A2
A1

Ambient Temperature

20

30

40

50

60°C

Nov. 2020 / Rev. 2.2 DS-ML15.051-EN
All parameters are specified at 5V, 3A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0Germany

25/25