PULS MiniLine:
practical, versatile and reliable likethe SilverLine – yet small like no other:

Data sheet

MiniLinewith plug-in
screw terminals• 24-28 V DC/50 W output power• 100-240 V Wide Range Input(85-264 V AC permitted)• DCok output• PULS Overload Design™ (does not switch
off at overload but delivers up to1.5 times nominal current)• with load sharing for reliable paralleloperation• NEC Class 2 Power Supply

PULS GmbH, Arabellastrasse 15, D-81925 Munich
Tel. +49.(0)89.9278-244, Fax: +49.(0)89.9278-199
sales@puls-power.com, http://www.puls-power.com

Mini is more.
ML50e111/040506

PLUG

Technical Data ML50.111
X InputConnectors

X Output (incl. Logic)

Input voltage

AC100-240V (Wide Range), 47...63 Hz
Admiss. limits: AC 85...264V (DC 85...375V)

Output voltage• preset

Input current<1.0A (@ AC 100Vin, 50W Pout)<0.6A (@ 196 V ACin, 50W Pout)

DV 24-28V, adj. by front panel potentiometer
24V ±0.5% @ 2.1A
(25V at no load, see ’Parallel operation’)

Voltage regulation

External Fusing

Not required, unit provides internal fuse
(T3AH, not accessible)

stat. ±2.5% Vout (see ’Parallel operation’)dyn. ±2% Vout overall

Ripple/Noise<50mVPP (20MHz bandw., 50Ω measurem.)Transient immunity

Transient resistance acc. to VDE 0160 / W2
(750V / 1.3ms), over entire load range

Hold-up time(see diagram below)>171ms @ AC 230V, 24V / 2.1A
>97ms @ AC 196V, 24V / 2.1A
>17ms @ AC 100V, 24V / 2.1A

Overvoltage prot. (OVP) <40V
Output noise suppressionRadiated EMI values below EN 61000-6-3, evenwhen using long (>2m), unscreened output cables

X Efficiency, Reliability
Efficiency

typ. 88.5% (AC 230V, 24V / 2.1A)(see also diagram below)
typ. 6.8W (AC 230V, 24V / 2.1A)

LossesMTBF (Reliability)ca. 600.000 h acc. to Siemensnorm SN 29500(24V/2.1A, AC 230V, Tamb = +40°C)

Prior to shipment, every unit undergoes the following tests in order toisolate any defective units which might suffer an early failure:• Run-in / burn-in (Full load, Tamb = +60°C, on/off cycle)• Functional test (100 %)X Construction, Mechanics, Installation
Robust plastic housing (US Patent No. D442, 923S), fine ventilation grid on
three housing sides to keep out small parts (e.g. screws), IP20
Dimensions and weight• WxHxD
45mm x 75mm x 91mm (+ DIN rail)
Depth incl. connectors: 98mm (+ DIN rail)
240g• Weight
Mounting orientation,

orby plug connectors, 2 terminals/output;
mating connectors enclosed

Connector size range – input:
0.5 - 2.5mm2 (22-12 AWG)
Ferrules admissible, 7mm recommended

PULS Overload Design™: No switch-off at overload/short-circuit, instead: up to 1.5 ⋅ Irated. So you
need no oversizing to start awkward loads.

Protection

Unit is protected against (also permanent) shortcircuit, overload and open-circuit

Derating

see diagram below

Parallel operation

Yes; load sharing by inclined characteristic curve(∆V = -1V between Iout = 0A and Iout = Irated)

Power back immunity

35V

Operation indicator

Green LED (DC OK), threshold: Vout = 20V

DC OK output

To feed a 24V relay (Rcoil > 700Ω). Relay operates,
if output voltage exceeds threshold value
Free-wheeling diode for relay is included in thepower supply unit

• Threshold

Vout = 20V ±4%

Humiditymax. 95% (without condensation)

Electromagneticemissions (EME)

EN 61000-6-3 (includes EN 61000-6-4)
Class B (EN 55011, EN 55022)

Electromagnetic
immunity (EMI)EN 61000-6-2 (includes EN 61000-6-1)

Safe low voltage:
Prot. class/degree:

SELV (EN60950, VDE0100/T.410), PELV (EN50178)
Class I (EN60950) / IP20 (EN60529)

The PSU complies with all major safety approvals for EU (EN 60950,EN 60204-1, EN 50178), USA (UL 60950, E137006, UL508 LISTED, E198865),
Canada (CAN/CSA-C22.2 No 60950 [CUR], CAN/CSA-C22.2 No. 14 [CUL]),CB Scheme (IEC 60950).

Connector size range – output:
0.3 - 2.5mm2(28-12 AWG)
0.3 - 4mm2 (28-12 AWG)
Ferrules admissible, 6mm recommended• flexible cable• solid cable• Wire strip length

Overload behaviour

Ambient temperature range (measured 25mm below unit)• storage, transport-25°C ... +85°C• operation-10°C ... +70°C (for derating see diagram below)(cf. ’Output’)Easy snap-on mounting onto the DIN-rail (TS35/7,5 or TS35/15).
Unit sits safely and firmly on the rail; no tools required even to remove• flexible/solid cable• Wire strip length

up to 2.1A @ 24V / up to 1.8A @ 28V depending
on built-in orientation, Vin and Tamb (convectioncooling); for details see derating diagram below

X Environmental Data, EMC, Safety

Ventilation/Cooling
Normal convection, no fan required• Free space f. cooling recom’d.: 25mm on sides with ventilation gridConnection

Rated continuousloading

Further design details – for your advantage:• All terminals are easy to reach as mounted on the front panel.
• Input and output are strictly apart from each other (below/above) andhave different wire access (90°/270° wiring), so cannot be mixed up

Design details – for your advantage:• Standard plugs, meet various connector families (e.g CombiCon)• Plugs allow measurement access

X Diagrams

90

2888

Vout range

2450

86

16128100-120V ACin
230V ACin482

Output power [W]8420100 V ACin
120 V ACin
230 V ACin807876
740123Output current Iout [A]4A

400,30,60,91,21,51,8Output current Iout [A]2,1100aB30bMounting
85-150 V ACin150-264 V ACin100-375 V DCin
85-100 V DCin

20100

72012060-1001020

A-a
A-a
A-a
B-bA-bA-aA-a
B-bA-cA-bA-b
B-b

30

4050

Ambient Temperature [°C]c

Hold-up time [ms]32

Hold-up time with ACin(@ Vout = 24V, typ. + min.)Deratingof output power

Efficiency(@ Vout = 24V, typ.)

Efficiency [%]Output voltage Vout [V]Output characteristic Vout/Iout(min.)

8060
40

Pout=50W, typ.
Pout=50W, min.
Pout=25W, typ.
Pout=25W, min.

2060

70

090,0125,0160,0195,0Input voltage V ACin [V]Product information (ML50e111/040506), Rev.: 6. May 2004.
Unless otherwise stated, specifications are valid for AC 230V input voltage, +25°C ambient temperature, and 5 min. run-in time. They are subject to change without prior notice..
PULS GmbH, Arabellastraße 15, D-81925 München X Tel: +49.(0)89.9278-244, Fax: +49.(0)89.9278-199, E-Mail: sales@puls-power.com X www.puls-power.com

230,0