PS3031-2420-0001 by Beckhoff

Beckhoff's PS3031-2420-0001 is a DIN-rail-mounted power supply in the PS Power Supplies series. Within an automation cabinet, it converts three-phase mains power into stabilized 24 V DC for PLCs, I/O terminals, motion controllers, and other connected equipment. Primary-switched regulation maintains a stable output as input conditions and electrical loads change. Active power factor correction reduces unnecessary current demand from the incoming supply, while the low-ripple output supports sensitive control electronics and ancillary actuators.

The supply provides an output of 24 V DC and can deliver a continuous load current of 20 A. It supports a momentary current of up to 30 A for four seconds, accommodating short motor inrush currents or solenoid pull-in demands. The maximum rated output is 480 W, which establishes the full-load operating capacity of the unit. Converter efficiency reaches 95.0% at an input of 400 V AC, resulting in a power loss of 25.3 W under full load. Protection circuitry limits the output bus to 35 V DC, helping protect downstream equipment if feedback energy raises the rail voltage. A hold-up time of 22 ms keeps the output within regulation during brief interruptions in the incoming mains supply.

The input draws 0.79 A per phase at nominal voltage and operates with a power factor of 0.94, reducing reactive loading on the facility transformer. The housing has a mechanical depth of 127 mm, a width of 65 mm, and a height of 124 mm. These dimensions allow the unit to fit in shallow enclosures while retaining the clearances needed for airflow. The housing weighs 870 g, supporting installation on lighter-gauge DIN rails without requiring additional mounting hardware. Push-in terminals accept conductors with cross-sectional areas of up to 4 mm², providing secure connections for power distribution wiring. A strip length of 10 mm permits full conductor insertion without leaving unnecessary bare copper exposed. The compact housing and push-in wiring arrangement help conserve cabinet space and simplify connections to downstream automation equipment.