Overview
The Westinghouse 66E6337 is a 100-ampere AB De-Ion molded case circuit breaker rated for 600V AC service. This thermal-magnetic breaker is designed for industrial power distribution systems, control centers, and motor protection applications. The compact AB DE-ION family delivers proven overcurrent and short-circuit protection for low-voltage electrical systems across manufacturing, utilities, and facility management.
Key Features
- 100-amp rated capacity with reliable thermal-magnetic trip protection
- AB De-Ion technology for enhanced arc suppression and consistent performance
- Molded case construction suitable for panel mounting in control centers and switchboards
- Long-Time and Instantaneous (LI) trip functions for motor and feeder protection
- Standard interrupting capacity rated for industrial duty cycle
- Compact frame design for space-efficient installation
Technical Specifications
Key specifications verified from Westinghouse AB DE-ION documentation and industry standard references:
- Amperage: 100A
- Voltage Rating: 600V AC, 250V DC maximum
- Family: AB DE-ION
- Trip Functions: Long-Time and Instantaneous (LI)
- Frame Size: Molded case
- Connection: Bolt-on terminals
- Poles: 3-pole configuration
- Application: Industrial power distribution and motor protection
Typical Applications
The Westinghouse 66E6337 is widely used in:
- Industrial motor control centers and power distribution panels
- Manufacturing facility electrical systems
- Commercial building main switchboards
- Utility feeder and branch circuit protection
- Equipment protection in HVAC and mechanical systems
- Retrofit and replacement in legacy AB DE-ION installations
Compatibility & Replacements
Compatible With
- 600V AC industrial electrical systems and panelboards
- Westinghouse AB DE-ION family switchgear and cubicles
- Standard molded case circuit breaker mounting rails and busses
- Low-voltage distribution equipment rated for 600V service
Replaces / Drop-In Replacement For
- Direct replacement for Westinghouse 66E6337 applications
- Compatible with other Westinghouse AB DE-ION 100A models in equivalent frame sizes
- Industry-standard bolt-on 100A 3-pole molded case breakers with matching dimensions
Works With
- Westinghouse AB DE-ION circuit breaker family
- Standard industrial panelboards and motor control centers
- Molded case circuit breaker mounting systems
- Thermal-magnetic protection coordination schemes
