Overview
The Westinghouse 503B027H01 is a stationary arcing contact spring engineered for use in Westinghouse medium-voltage and molded-case circuit breakers. As a precision contact component, it ensures consistent electrical performance and safe arcing containment in industrial power distribution systems. This OEM-specification part is essential for maintaining breaker functionality and prolonging equipment life.
Key Features
- Original equipment manufacturer (OEM) part for Westinghouse circuit breakers
- Stationary arcing contact design for reliable fault-clearing performance
- Precision-engineered spring mechanism for consistent electrical contact
- Compatible with DS206, DSL 416, and DS-420 breaker series
- New in box condition, ready for installation
Technical Specifications
- Part Number: Westinghouse 503B027H01
- Alternate Designation: 21-1000-030
- Component Type: Stationary Arcing Contact Spring
- Manufacturer: Westinghouse Electric Corp
- Application: Medium-voltage and molded-case circuit breakers
- Condition: New in box
Typical Applications
This contact spring is typically used in:
- Industrial power distribution systems requiring medium-voltage circuit protection
- Manufacturing facilities with demanding electrical loads
- Utility and commercial electrical installations
- Switchgear and control center repairs and maintenance
- Emergency response and system restoration projects
Compatibility & Replacements
Compatible With
- Westinghouse DS206 circuit breakers
- Westinghouse DSL 416 circuit breakers
- Westinghouse DS-420 circuit breakers
- Medium-voltage and molded-case breaker platforms
Replaces / Drop-In Replacement For
- Original Westinghouse 503B027H01 contact springs
- Breakers equipped with part number 21-1000-030
Works With
- Westinghouse circuit breaker maintenance and service kits
- Industrial electrical system upgrades and refurbishments
- Standard molded-case breaker repair protocols
