Electrical power supply transformer
85 - 300 V DC
SIEMENS Low-Voltage Power Distribution
The electronic power supply unit provides a 24 V DC supply to systems with an operational voltage of 85 to 265 V AC or 85 to 300 V DC. The device operates in the lower class for minimum power supply with a safety extra-low voltage.
In the event of short circuits and high capacitive loads, the power supply unit detects the overcurrent as soon as it is activated and shuts down immediately. It switches back on after 2.5 seconds. The electronic power supply unit is suitable for supplying the 5TT7 1 GSM alarm modules within a supply voltage range of 150 to 230 V AC.
Power supply units for direct voltages with rectifiers are used to supply gongs, bells, door openers, switching relays, remote control switches, Insta contactors or for safety extra-low voltage systems (SELV) in continuous operation. They are protected against short circuit or moderate overload by a PTC resistor. If tripped, the power supply unit must be switched off for approx. 30 minutes to allow the PTC resistor time to cool down.
