PISA-M-4CL2, 24 - 12 V, 3.75 - 5 A, 360 W Electronic Circuit Breaker
Doc. ID: PU-466.015.01-xxA (2024-12-12-JM2)
Symbols Explained
WARNING:
Risk of serious injury or death
NOTE:
Additional information
Action step
Positive result
CCB
Channel Control Button
Read this first!
Before operating this device, please read this manual thoroughly and retain this manual
for future reference. This device may only be installed and put into operation by qualified
personnel. If damage or malfunction should occur during operation, immediately turn power
off and send device to the factory for inspection. The device does not contain serviceable
parts. The information presented in this document is believed to be accurate and reliable
and may change without notice. For any clarifications the English translation will be used.
WARNING:
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.
i
NOTE:
Tips for optimal use
Consult the information in the technical data table.
For further information and configuration please refer to the datasheet.
Product Description
The PISA-M devices are miniature four-channel protection modules for 24 V and 12 V
systems.
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.
All parameters are specified at 24 Vdc, 4 x 3.75 A, +25 °C ambient and after a 5 minutes run-in time unless otherwise noted.
Installation Instruction
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.
Use an appropriately sized 24 V or 12 V power supply, which can deliver the peak current
required to trip the load channels. If peak currents are too low, the PISA-M will trip channels
in case of voltage drops to protect the power supply from overload.
Make sure that the wiring is correct by following all local and national codes. Use
appropriate copper cables that are 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 1.5 kV according
to IEC 60664-1. The input can be powered from a regulated power supply or a similar DC
source.
English
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 not cover ventilation grid!
Keep the following minimum installation clearances: 40 mm on top, 30 mm on the bottom,
0 mm left and right side. Increase the 0 mm to 15 mm in case the adjacent device is a heat
source. Between multiple PISA-M modules no clearance is needed. The device is designed for
altitudes up to 5000 m.
The maximum surrounding air temperature is +70 °C. The operational temperature is the
same as the ambient or surrounding air temperature and is defined 3 cm below the device.
The device is designed to operate in areas between 5 % and 95 % relative humidity.
Functional Description
The output can supply any kind of loads, including inductive and capacitive loads. The
maximum size of capacitive loads is specified in the "Technical Data" table. Larger load
capacitors might result in an unintended turn-off of the channel.
Do not apply return voltages from the load to the output terminals higher than 30 V.
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.
Output channels can be switched on and off separately by pushing the corresponding
control button for 50 ms or 1 s, depending on selected button reaction style. A channel that
is switched off is indicated by the red LED.
If the total current is larger than 20 A for 2 s or more, the device turns off the output
channels, starting with overloaded channels, then continuing with CH4 to CH1 until the total
output current is 20 A or less. The tripping current can be set individually for all channels.
The tripping characteristic can be set as a common parameter for all channels.
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PULS GmbH, Elektrastr. 6, 81925 Munich
+49 89 9278 0 www.pulspower.com
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