PISA-B-8CL2-B1
PISA-B-8CL2-B4

ELECTRONIC FUSE
8X 24V, NEC CLASS 2• Eight Current Controlled Outputs• NEC Class 2 Compliant• Adaptive Voltage-dependent Current Limitation for
Maximal Output Power According to NEC Class 2• Selective Tripping of Overloaded Channels• Compatible even with large Capacitive Loads• Output Currents Displayed Live on LED Matrix• Remote Reset or Reset via Pushbuttons• Common Signaling Relay Contact for Tripped
Channels (PISA-B-8CL2-B1)• Digital Coded Signal Output for Tripped Channels(PISA-B-8CL2-B4)• Parameter Settings can be Locked by PIN-Code• ON/OFF Feature for Each Individual Output• Easy Wiring - Distribution Terminals for Negative Pole
• 3 Year Warranty

GENERAL DESCRIPTIONSHORT-FORM DATAThe PISA-B devices are DIN rail mountableeight channel protection modules with integrated
electronic fuses for 24V systems. They distribute thecurrent from one large power source to eight NEC
Class 2 output circuits, which results in reduced fire
safety efforts and easier regulatory testing as well as
approval processes for the end equipment.
Channel 1 and 2 are optimized for loads with large
input capacitances. Connect such loads to thesechannels to avoid false tripping or unexpected switchoff such loads.
The PISA-B-8CL2-B1 is equipped with a common
tripping signaling relay contact that reports trippedchannels, while the PISA-B-8CL2-B4 has a digital codedsignal output built in for this function.
All PISA-B devices are equipped with push-in
terminals, which are optimized for automated wiring.
The mechanically robust housing is made of a highgrade, reinforced molded material on the front andof an aluminum body, which permits surrounding
temperatures up to +70°C.

Input voltage
DC 24V
Required input voltage
19.6Vdc
for turning-on of outputs
Input current
40A
Internal consumption
40mA
35mA
Nominal output current 3.75A-20%/+25%

Current limitation
Tripping characteristics
Tripping delay
CH1-CH2
CH3-CH8
CH1-CH8

5.7A
50A
Slow or Fast

CH1 and CH2CH3 to CH8
Selectable

2ms – 1.1s
<10ms
1.1s

CH1-CH8

0.22s

At short circuit
At short circuit
For slow tripping at 1.5x
nominal current
For fast tripping at 1.5x
nominal current

Max load capacitance capability
CH1-CH2
100mF
CH3-CH8
20mF
Voltage drop per channel
CH1-CH245mV
CH3-CH860mVStandby losses
1W
Power losses
7W
Temperature range-25°C to 70°C
Size (w x h x d)
WeightORDER NUMBERS
Description:
Electronic Fuse PISA-B-8CL2-Bx-xx
Order Number:
PISA-B-8CL2-B1 Common signaling relay contact
PISA-B-8CL2-B4 Digital coded signal output
Accessories:
BUS-BAR1-L102: A set for 2 modules
BUS-BAR1-L155: A set for 3 modules
BUS-BAR1-L500: Single piece L=500mm

52x124x130mm
370g / 0.82lb

PISA-B-8CL2-B1
PISA-B-8CL2-B4
Per channel

Per channel
Per channel
For 3.75A load
For 3.75A load
At 8x 3.75A loadWithout DIN rail

MAIN APPROVALS
For details and a complete approval list, see chapter 20.

UL 2367

UL 61010-2-201

IEC 61010
IEC 62368 planned

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Index
1
2
3
4
5
6
7
8
9
10
11
12

Intended Use.......................................................
Installation Instructions......................................
Typical Wiring Scheme.......................................
DC-Input..............................................................
Output.................................................................
Output Tripping Characterstics.........................
Control and Monitoring Features.....................
Digital Coded Interface (PISA-B-8CL2-B4).........
Alarm Relay Contact (PISA-B-8CL2-B1)..............
Reset Input..........................................................
Efficiency and Power Losses..............................
Functional Diagram............................................

3
3
4
5
5
7
8
9
10
10
10
11

13
14
15
16
17
18
19
20
21
22
23

Front Side And User Elements...........................
Terminals And Wiring........................................
Lifetime Expectancy...........................................
MTBF....................................................................
EMC.....................................................................
Environment.......................................................
Safety Features and Protection Features..........
Approvals and Fulfilled Standards....................
Regulatory Compliance......................................
Physical Dimensions And Weight......................
Accessories..........................................................
23.1
Power Connection - Power-Bus-Bars......

12
12
13
13
14
15
16
17
17
18
19
19

The information given in this document is correct to the best of our knowledge and experience at the time of publication.
If not expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As thestate of our knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We
therefore kindly ask you to always use the latest issue of this document (available under www.pulspower.com).
No part of this document may be reproduced or utilized in any form without our prior permission in writing.
Packaging and packaging aids can and should always be recycled. The product itself may not be disposed of as domestic
refuse.

TERMINOLOGY AND ABBREVIATIONSNEC Class 2

DC 24V

24Vdc
may
shall
shouldNEC Class 2 power sources provide limited output power of less than 100 VA and output
current of less than 8 A. They are considered safe in terms of fire ignition and provide
acceptable protection against electric shock. The benefits of using NEC Class 2 circuits are
reduced and less costly requirements for wiring and fire protection. In addition, the end-use
regulatory testing and approval process is simpler.
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)
A figure with the unit (Vdc) at the end is a momentary figure without any additional
tolerances included.
A key word indicating flexibility of choice with no implied preference.
A key word indicating a mandatory requirement.
A key word indicating flexibility of choice with a strongly preferred implementation.

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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1.

Intended Use

This 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 end-application.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.

2.

Installation Instructions
DANGER–––––

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

Turn power off before working on the device. Protect against inadvertent re-powering.
Do not open, modify or repair the device.
Use caution to prevent any foreign objects from entering 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 surfaces may cause burns.

Obey the following installation instructions:This device may only be installed and put into operation by qualified personnel. This device does not contain serviceableparts. If damage or malfunction should occur during installation or operation, immediately turn power off and send unit
to the factory for inspection.
Install the 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 top of the unit.
Up to eight devices can be connected via two power-bus-bars, where only one device is connected to the power supply.
The power-bus-bars must be long enough to make a connection to all contacts of the devices.
Use an appropriately sized 24V power supply, which can deliver the peak current required to trip the load channels. If
peak currents are too low, the supply voltage for the protection module can no longer be maintained, which results in amalfunctioning of the protection module.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables thatare designed 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.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed. The
enclosure of the device provides a degree of ingress protection of IP20. The housing does not provide protection against
spilled liquids.
The isolation of the devices is designed to withstand impulse voltages up to 1.5kV according to IEC 60664-1.
The input can be powered from a regulated power supply or a similar DC source.
The input must be powered from a PELV or SELV source in order to maintain a SELV or PELV output. Check for correct input
polarity. The device will not operate when the voltage is reversed.
A disconnecting means shall be provided for the input of the device.
The device is designed as “Class of Protection III” equipment according to IEC 61140.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do notcover ventilation grid!
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase
the 5mm to 15mm in case the adjacent device is a heat source. Between multiple PISA-B modules, no clearance is needed.
The device is designed for altitudes up to 5000m (16 400ft).
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.

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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3.

Typical Wiring Scheme

One fuse module is suitable to distribute the current to 8 consumers. If there are more than eight consumers, up to eightfuse modules can be used (64 consumers). The supply of the individual fuse modules can be done by means of power-busbars, which are available as accessory parts. The supply of the 24V is then only done by one fuse module, preferably inthe middle, because the current is then better distributed in both directions and the permissible current of the power-busbar of 32A is not exceeded.
Fuse modules can be lined up on the DIN rail without spacing. The power-bus-bars can be plugged in from the front andmust have a length that all plug contacts of the modules make a contact.
The (+) pole terminals of the loads must be connected to the outputs of the fuse module. The fuse module also has a
distribution for the (-) pole connection. This internal distribution can be used and reduces the wiring effort. However, an
external distribution of the (-) pole connection may also be used, as shown in Fig. 3-2.
The channel 1 and 2 are optimized for loads with large input capacitances. Connect such loads to these channels to avoid
a false tripping or unexpected switch-off of these channels.

Fig. 3-1: Typical wiring scheme for one fuse module (8 loads)

Fig. 3-2: Typical wiring scheme utilizing an external
distribution terminal for the negative poleFig. 3-3: Typical wiring scheme for multiple modules

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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4.

DC-Input

The input can be powered from a regulated power supply or a similar DC source. Use an appropriately sized power supply,
which can deliver the required output current.
If a power supply with a continuous output current greater than 50A is used, a fuse or circuit breaker with 63A (B- or CCharacteristic) must be connected between the power supply and the electronic fuse module.
The continuous voltage between the input and ground must not exceed 60Vdc.
The input must be powered from a PELV or SELV source or an “Isolated Secondary Circuit” in order to maintain SELV or
PELV outputs.
Check for correct input polarity. The device will not operate when the voltage is reversed.
Input voltage
Input voltage rangenom.

DC 24V
19.2-30Vdc

Input voltage required toswitch on the outputs

typ.
max.

19Vdc
19.6Vdc

Input current

max.
max.

40A
30A

For multiple modules connected via power-bus-bar
For a single module at fully loaded outputs

typ.
typ.

40mA
35mA

Stand-by current with no load current on the outputs
For PISA-B-8CL2-B1
For PISA-B-8CL2-B4Internal current
consumption

5.

-20%/+25%

OutputThe output can supply any kind of loads, including inductive and capacitive loads. The maximum size of capacitive loads is
specified in the table below (see Tab. 5-1). Larger load capacitors might result in an unintended turn-off of the channel.
More detailed information regarding allowable capacitive loads is available on request. If in doubt or when you do notknow the input capacitance of your load, we recommend to perform tests with the real load.
The outputs of each channel fulfil the requirements for a limited power source acc. to NEC Class 2.
Output channels can be switched on and off separately by pushing the corresponding control button for longer than 50ms.
A switched off channel is displayed with the uppermost red LED of the LED bar graph. Factory setting is that all channels
are switched on.
Channels 1 and 2 have a current limited output, while channels 3 to 8 have an overcurrent shutdown behaviour only.
– Do not apply reverse voltages from the load to the output terminals that are higher than 30V and last longer than 1s.
– Do not parallel outputs for higher output currents.
– Do not connect outputs in a series connection for higher output voltages.
– Do not connect batteries for charging purposes to the output of the device.
In order to avoid too high peak currents on the 24V supply when applying the 24V supply voltage, the output channels are
switched on in delayed steps. Channel 1 switches on after 50ms followed by the remaining channels with a delay of 100ms
each. This scheme applies when all channels are switched on. Channels that are switched off are skipped.

Fig. 5-1: Turn-On sequence after applying an input voltage

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Output voltage

nom.

Output current

nom.
nom.

The output voltage is equal to the input voltage
minus the voltage drop of the module.
3.75A+/-100mA, at 24V per channel
3A+/-100mA, at 30V per channel
Adaptive voltage-dependent current limitation for maximal output current
according to NEC Class 2 requirements.

Voltage drop per channel

typ.

45mV

typ.

120mV

typ.

60mV

typ.

135mV

typ.
typ.

5.7A
For CH1 and CH2
50A
For CH3 to CH8
Channels 1 and 2 have a current limited output, while channels 3 to 8 havean overcurrent shutdown behaviour only.

Current limitation

DC 24VFor CH1 or CH2 at 3.75A load when all otherchannels are not loaded
For CH1 or CH2 when all channels are loaded with
3.75A
For CH3 to CH8 at 3.75A load when all otherchannels are not loaded
For CH3 to CH8 when all channels are loaded with
3.75A

Load capacitance capability max.
max.

100mF
20mF

For CH1 and CH2 per channel
For CH3 to CH8 per channel

Output leakage current

max.
typ.
max.

2mA
1.2mA
50μA

Per channel, when CH1 and CH2 are switched off
Per channel, when CH1 and CH2 are switched off
Per channel, when CH3 to CH8 are switched off

Turn-on delay of outputs

typ.

750ms

Period between applying the input voltage andturning on all output channels.

Tab. 5-1: Output data

Fig. 5-2: Output Current vs. Input Voltage

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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6.

Output Tripping Characterstics

The tripping characteristic can be set to Slow or Fast as a common parameter for all channels.
Tripping characteristic
Tripping delay

typ.
typ.
typ.
max.

Slow / Fast

selectable, factory setting is Fast

1.1s
0.22s
2ms – 1.1s
10ms

For all channels in Slow mode at 1.5x nominal current
For all channels in Fast mode at 1.5x nominal current
For CH1 and CH2 in short circuit
For CH3 to CH8 in short circuit

The following curves show the let-through current areas, which are located to the left of the curves, and the tripping areas,
which are located to the right of the curves.

Fig. 6-1: CH1 and CH2 tripping diagrams in Slow mode

Fig. 6-2: CH1 and CH2 tripping diagrams in Fast mode

Fig. 6-3: CH3 to CH8 tripping diagrams in Slow mode

Fig. 6-4: CH3 to CH8 tripping diagrams in Fast mode

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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7.

Control And Monitoring Features

The LED matrix display provides information about the actual current values (average and peak) of the individual output
channels, reports faults and helps to parameterise the device. The green and yellow LEDs indicate the actual channel current
in percent of the nominal value. Peak values are stored in a peak detector and are additionally shown with one LED for ashort period of time. Red LEDs (regardless of whether they are flashing or solid on) indicate that the output is switched off.
The tripping characteristic can be set as a common parameter for all channels. To change the characteristic alternately
push the SET and channel control button for channel 3 at the same time. The selected option is shown on the LED matrix
for 2 seconds. Letter F indicates the fast and the letter S the slow tripping characteristic. If only the SET button is pressed,
the characteristic is displayed for 2s. Tripping characteristic can be changed regardless of whether a channel is switched
off or not.
Tripping characteristic setting can be protected against changes with a PIN code. To lock the settings push the SET andchannel control button 1 until the unit shows a moving text “PIN TO LOCK”. Enter a 4-digit PIN by pushing any combinationof channel control buttons 1-8. Push the SET button to save the PIN, the unit shows a moving text “LOCKED”. To unlock
settings push the SET and channel control button 1, the unit shows a moving text “PIN TO UNLOCK” and enter the 4-digit
PIN you selected and confirm it by pushing the SET button.

Fig. 7-1: Control and monitoring elements

Special Key Combinations
Special shortcuts allow quick access to certain information:
Press SET + CCB1 button: Lock/Unlock setting with PIN
Press SET + CCB2 button: Show FW version
Press SET + CCB3 button: Slow/Fast mode

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Description:
Channel 1 is loaded with 40-60% of the nominal current
Channel 2 has tripped due to over current
Channel 3 is turned off on purpose (with push-button)
Channel 4 is loaded with 80-100% of the nominal current
Channel 5 is turned off on purpose (with push-button)
Channel 6 is loaded with 40-60% of the nominal current
Channel 7 is loaded with 0-10% of the nominal current
Channel 8 has tripped due to over current

Fig. 7-2: LED pattern example

8.

Digital Coded Interface (PISA-B-8CL2-B4)

The device is equipped with a “Digital Coded Alarm Signal” output (pins 13 and 14), which provides information about
individual channel tripping. The signal is an opto-coupler-type output which is low ohmic for start bit and for trippedchannels.
Threshold value for starttyp.

0.7V @ 1mA, 1.1V @ 5mA

Signal voltage
Signal current

max.
max.

+35Vdc10mAIsolation voltage

see chapter 19

The signal sequence starts with 200ms start bit followed by a 100ms gap and 100ms signal related to CH1 etc. The whole
sequence is periodically repeated every 1900ms.

Fig. 8-1: Digital Coded Alarm Signal – Signal Sequence

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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9.

Alarm Relay Contact (PISA-B-8CL2-B1)

The device is equipped with an alarm contact. The normally closed (NC) contact closes as soon as one output channel has
switched off (common signalling) or the input voltage is lower than 19Vdc.
Contact ratings

max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
min. Permissible load: 1mA at 5Vdc

Isolation voltage

see chapter 19

10. Reset Input
A restart of switched-off channels can be done either by a button on the unit or by a control signal on the reset input(pins 11-12). Therefore, push the corresponding channel control button for longer than 1s or apply a voltage between 10
and 30Vdc for longer than 1s to the reset input. The reset input is galvanically isolated from the rest of the device.
Reset voltage

min. 10Vdc
max. 30Vdc

Reset delaymin. 1s - apply the reset voltage for at least this time to restart switched-off channels

Signal voltage
Signal current

min. -35Vdc
max. +35Vdc
max. 6mA, current limited

Isolation voltage

see chapter 19

11. Efficiency And Power Losses
Efficiency

typ.

99%

At 8x 3.75A output load

Power losses

typ.
typ.

1W
7W

At no output loads
At 8x 3.75A output load

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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12. Functional Diagram

Fig. 12-1: Functional diagram PISA-B-8CL2-B1

Fig. 12-2: Functional diagram PISA-B-8CL2-B4

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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13. Front Side And User Elements
A

Output terminals CH1 – CH8
A1: (+)
Positive output poles
A2: (−)
Negative (return) output poles

B

Input terminals(+)
Positive input pole(−)
Negative (return) input poleC

Alarm signal (pin 13-14)
PISA-B-8CL2-B1: Relay contact
PISA-B-8CL2-B4: Digital coded signal
Signal input to restart switched-off channels (pin 11-12)
Slot for interconnecting power-bus-bar for supply voltage
E1: Interconnection for positive input power-bus-bar
E2: Interconnection for negative (return) input power-bus-bar
Set button required for controlling the unit
Channel control buttons
LED matrix display

D
E

F
G
H

Fig. 13-1: Front side

14. Terminals And Wiring
The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring.

Type
Solid wire
Stranded wire
Stranded wire with ferrules
American Wire Gauge
Max. wire diameter (including
ferrules)Wire stripping length
Screwdriver

Input Terminals
Push-in terminals
Max. 16mm2Max. 16mm2Max. 10mm2
AWG 20-4
6.1mm

Output Terminals
Push-in terminals
Max. 2.5mm2Max. 2.5mm2Max. 1.5mm2
AWG 24-122.3mm

Signal Terminals
Push-in terminals
Max. 2.5mm2Max. 2.5mm2Max. 1.5mm2
AWG 24-12
2.3mm

19mm / 0.75inch
5mm slotted to open thespring10mm / 0.4inch
3mm slotted to open thespring10mm / 0.4inch
3mm slotted to open thespringAll parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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15. Lifetime Expectancy
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 the capacitor’s manufacturer specification.
Please note: The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400h).
Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
Lifetime expectancy

t.b.d.
t.b.d.
t.b.d.
t.b.d.

At 24V, 8x3.75A and 40°C
At 24V, 8x1.88A and 40°C
At 24V, 8x3.75A and 25°C
At 24V, 8x1.88A and 25°C

16. MTBF
MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicatesreliability of a device. 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 meansthat statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it cannot be determined
if the failed unit has been running for 50 000h or only for 100h.
For these types of units the MTTF (Mean Time To Failure) value is the same value as the MTBF value.
MTBF SN 29500, IEC 61709

t.b.d.
t.b.d.

At 24V, 8x3.75A and 40°C
At 24V, 8x3.75A and 25°C

MTBF MIL HDBK 217F

t.b.d.
t.b.d.
t.b.d.
t.b.d.

At 24V, 8x3.75A and 40°C; Ground Benign GB40
At 24V, 8x3.75A and 25°C; Ground Benign GB25
At 24V, 8x3.75A and 40°C; Ground Fixed GF40
At 24V, 8x3.75A and 25°C; Ground Fixed GF25

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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17. EMCThe EMC behavior of the device is designed for applications in industrial environment as well as in residential, commercial
and light industry environment without any restrictions.
The device complies with EN 61000-6-1, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4.
The device complies with FCC Part 15 rules. Operation is subjected to following two conditions: (1) this device may notcause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
The chassis of the device is earthed through the DIN rail mounting connection to a grounded metal plate.
EMC Immunity

Power lines and housing

Electrostatic discharge

EN 61000-4-2

Contact discharge
Air discharge

8kV
8kV

Criterion A
Criterion A

Electromagnetic RF field

EN 61000-4-3

80MHz - 6GHz

10V/m

Criterion A

Fast transients (Burst)

EN 61000-4-4

Input lines
Output lines

2kV
2kV

Criterion A
Criterion A

Surge voltage on input lines

EN 61000-4-5(+) → (−)(+) / (−) → housing

500V
1kV

Criterion B
Criterion B

Surge voltage on output lines

EN 61000-4-5(+) → (−)(+) / (−) → housing

500V
1kV

Criterion B
Criterion B

Conducted disturbanceEN 61000-4-6

0.15 - 80MHz

10V

Criterion A

EMC Immunity

Signals lines

Electromagnetic RF field

EN 61000-4-3

80MHz - 6GHz

10V/m

Criterion A

Fast transients (Burst)

EN 61000-4-4

With coupling clamp

2kV

Criterion A

Surge

EN 61000-4-5Signal → housing

1kV

Criterion A

Conducted disturbanceEN 61000-4-6

0.15 - 80MHz

10V

Criterion A

Performance Criterions:
A: The device shows normal operation behavior within the defined limits.
B: The device operates continuously during and after the test. During the test minor temporary impairments may occur,
which will be corrected by the device itself.
EMC Emission
Conducted emission

IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Input lines
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Output lines
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1 Signal lines

Radiated emission

EN 55011, EN 55032, CISPR 11, CISPR 32

Limits for local DC power
networks fulfilled.
Limits for local DC power
networks fulfilled.
Limits for wired network ports
fulfilled.
Class B

Switching Frequencies
Microcontroller
Internal communication bus
Internal auxiliary voltage

8MHz
400kHz
100kHzFixed frequency
Fixed frequency
Fixed frequency

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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18. Environment
Operational temperature-25°C to +70°C (-13°F to 158°F)

Storage temperature-40°C to +85°C (-40°F to 185°F)

Output derating

not applicable

Humidity

5 to 95% r.h.

According to IEC 60068-2-30

Atmospheric pressure110-54kPa

See Fig. 18-2 for details

Altitude

Up to 5000m (16 400ft)

See Fig. 18-2 for details

Over-voltage category
N/A
Impulse withstand voltages 1.5kVThe operational temperature is the ambient or
surrounding temperature and is defined as the
air temperature 2cm below the device.
For storage and transportation

Between input and chassis (according to IEC
60664-1 over-voltage category II)

Degree of pollution

2

Vibration sinusoidal

2-17.8Hz: ±1.6mm;
According to IEC 60068-2-6
17.8-500Hz: 2g
2 hours / axis
30g 6ms, 20g 11ms
According to IEC 60068-2-27
3 bumps per direction,
18 bumps in total
Shock and vibration is tested in combination with DIN rails according to EN 60715 witha height of 15mm and a thickness of 1.3mm.

Shock

According to IEC 60664-1, not conductive

Fig. 18-1: Output current vs. ambient temp.

Fig. 18-2: Output current vs. altitude

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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19. Safety Features And Protection Features
Isolation resistance>10MOhm

At delivered condition between power port andsignals, measured with 500Vdc
At delivered condition between power port andhousing, measured with 500Vdc
At delivered condition between signals and housing,measured with 500Vdc>10MOhm>10MOhm
Output over-voltage protection

max. 500Vac
max. 500Vac

Power port to signal port
Power port / signal port to housing

Class of protection

III

A PE (Protective Earth) connection is not required

Degree of protection

IP20

According to EN/IEC 60529

Over-temperature protection

Not included

Internal input fuse
Internal output fuses

Not included
Not included

Input over-voltage protection
Reverse input polarity protection
Touch current (leakage current)

max. 31.4Vdc
Not included

No harm or defect of the unit
Make sure that the input voltage polarity is correct
before applying the input voltage.

The leakage current which is produced by the module itself depends on the
input voltage ripple and need to be investigated in the final application.
For a smooth DC input voltage, the produced leakage current is less than
100μA.

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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20. Approvals And Fulfilled Standards
IEC 61010

CB Scheme Certificate
IEC 61010-2-201 - Electrical Equipment for Measurement, Control andLaboratory Use - Particular requirements for control equipment

IEC 62368
plannedCB Scheme Certificate
IEC 62368-1 - Audio/video, information and communication
technology equipment - Safety requirements
Output safety level: ES1

NEC Class 2

UL Certificate
Limited Power Source
Listed in the UL 61010-2-201 approval report, investigated according
to UL 1310

UL 61010

UL Certificate
Listed equipment for category NMTR - UL 61010-2-201 - Electricalequipment for measurement, control and laboratory use - Particularrequirements for control equipment
Applicable for US and Canada
E-File: E198865

UL 2367

UL Certificate
Recognized component for category QVRQ - UL 2367 Standard for
Solid State Overcurrent Protectors
Applicable for US
E-File: E342020

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

21. Regulatory Compliance
EU Declaration ofConformity

The CE mark indicates conformance with the European

REACH Directive

Manufacturer's Statement
EU-Regulation regarding the Registration, Evaluation, Authorization
and Restriction of Chemicals

WEEE Directive

Manufacturer's Statement
EU-Regulation on Waste Electrical and Electronic Equipment
Registered in Germany as business to business (B2B) products.

RoHS (China RoHS 2)

Manufacturer's Statement
Administrative Measures for the Restriction of the Use of Hazardous
Substances in Electrical and Electronic Products 25 years– EMC directive– RoHS directive

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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22. Physical Dimensions And Weight
Width
HeightDepth

52mm / 2.05''124mm / 4.88''130mm / 5.12''
The DIN rail height must be added to the unit depth to calculate the total required
installation depth.

Weight370g / 0.82lb

DIN rail

Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.

Housing material

Body: Aluminium alloy
Cover: High-grade polycarbonate material

Installation clearances

See chapter 2.

Penetration protection

Small parts like screws, nuts, etc. with a diameter larger than 3.6mm

All dimensions in mm unless otherwise noted.

Fig. 22-1: Front viewFig. 22-2: Side view

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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23. Accessories
23.1. POWER CONNECTION - POWER-BUS-BARS
These power-bus-bars are used to connect several PISA-B modules electrically together. The power-bus-bars distribute the24V supply voltage of the PISA-B modules.
The length of 102mm is suitable to connect two PISA-B modules together. The length of 155mm is suitable to connect
three PISA-B modules together. If more than three modules need to be connected to another, appropriate pieces can be
cut from the 500mm long rail.
The supply of the 24V is then only done by one fuse module, preferably in the middle, because the current is then better
distributed in both directions and the permissible current of the power-bus-bars of 32A is not exceeded.
Fuse modules can be lined up on the DIN rail without spacing. The power-bus-bars can be plugged in from the front of the
PISA-B modules and must have a length that all plug contacts of the modules make a contact.
Order number

BUS-BAR1-L102

BUS-BAR1-L155

BUS-BAR1-L500

Order number contains

2 pcs. (for + and - pole)2 pcs. (for + and - pole)

1 pc.

Colour

Grey

Grey

Grey

Size (l x w x h)

102 x 3.3 x 11.4mm(4.02 x 0.13 x 0.45’’)155 x 3.3 x 11.4mm(6.1 x 0.13 x 0.45’’)500 x 3.3 x 11.4mm(19.7 x 0.13 x 0.45’’)

Weight9g (0.02lb) per pc.

13g (0.03lb) per pc.

43g (0.1lb)

Suitable for

2x PISA-B modules

3x PISA-B modules

Up to 8x PISA-B modules(2 pcs. needed)

Max. current

32A

32A

32A

Fig. 23-1: Mechanical dimensions

Fig. 23-2: Mounting example

All parameters are specified at 24Vdc input voltage, 8x3.75A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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