Westinghouse Electric Corporation WCK53 Partial Contact Kit

Description:

The Partial Contact Kit for WCK53 Series 5 3P Westinghouse Advantage Starter is used in NEMA Size 5 magnetic motor starters to restore worn or damaged main power contacts within the contactor assembly. It is a replacement service kit designed for Westinghouse Advantage Series starters, providing new contact points to maintain proper electrical conduction and switching performance under high current motor loads. Commonly installed in industrial motor control centers, heavy-duty conveyors, pumps, compressors, and manufacturing equipment using WCK53-based starters. Maintenance teams, OEM rebuilders, and electrical contractors use this kit for contact refurbishment, preventive maintenance, and restoration of reliable motor switching performance.

Applications:

The WCK53 partial contact kit is used in Westinghouse Advantage Series motor starters to replace degraded or pitted contacts caused by repeated high-load switching. It is commonly applied in industrial motor control systems such as conveyors, large pumps, HVAC compressors, and heavy machinery where NEMA Size 5 starters are used for high horsepower motor control.

Technical Specifications:

• Manufacturer: Westinghouse / Cutler-Hammer (Eaton legacy Advantage Series)
• Model / Part number: WCK53 (Series 5, 3-pole contact kit)
• Product type: Partial contact kit for magnetic motor starter
• Starter compatibility: NEMA Size 5 Advantage Series motor starters
• Poles: 3-pole contact assembly
• Function: Electrical contact replacement for motor switching circuits
• Current rating: Up to ~270A class (system dependent)
• Voltage rating: Up to 600V AC class (starter dependent)
• Material: Silver alloy industrial contact tips
• Mounting: Internal replacement kit within starter contactor assembly
• Application environment: Industrial motor control systems and MCCs

Common Replacements:

• Westinghouse WCK53 full contact kit (complete replacement set)
• Eaton Advantage Series W200 Size 5 contactor assembly replacement
• Cutler-Hammer W200M5 magnetic starter contact rebuild kit