Westinghouse 453D502G03 Electrical Interlock Kit

Westinghouse 453D502G03 Electrical Interlock Kit provides reliable mechanical and electrical interlock protection for industrial motor control and switching systems. It is commonly installed in contactor assemblies, motor starters, and industrial control panels to prevent simultaneous circuit operation. Part of the L-54 series (Size 1), it supports voltages up to 600 VAC or 230 VDC and offers a universal normally open (NO) and normally closed (NC) contact configuration for flexible interlock schemes. The kit mounts on contactor or control assemblies and is compatible with industrial contactors and motor starters, delivering interlock protection and circuit-prevention control. Manufacturer part number 453D502G03; common replacements include 453D502G04, Eaton L54 Interlock Kit, and Allen-Bradley 1494V-L54 Interlock Assembly.