Westinghouse 254P910H03 Power Supply Module Circuit Board

Industrial-grade AC to DC power supply board used in legacy Westinghouse control systems, typically for supplying regulated voltages to logic, relay, and instrumentation circuits.

Manufacturer: Westinghouse
Model: 254P910H03
Function: Power Supply Module
Input: Likely 120/240V AC (based on industrial standard use)
Output: Regulated DC (commonly ±12V, ±15V, or 24V—determined by onboard components)
Key Components:
– Toroidal inductor for filtering or power factor correction
– AAVID 250C656G01 heatsink for power transistor or regulator
– Bridge rectifier
– High-voltage electrolytic capacitors
– Discrete resistors and diodes for voltage regulation and filtering
Shielding: Metal cover for EMI protection
Connectors: Multi-pin headers for power distribution and monitoring
Mounting: Chassis or rack-mounted via corner holes
Date Code: “PDRM-9.0 11-88” suggests design revision from November 1988
Application: Used in process control racks, PLC backplanes, or distributed control systems Please review pictures carefully and let us know if you have any questions!