EHB1100S | Circuit Breaker | 100A | 1-Pole | 277V

Designed for reliability in demanding industrial environments, the EHB1100S is a 100A, 1-pole circuit breaker built to protect 277V circuits with precision. It’s ideal for maintenance, retrofit, and replacement projects where exact specifications are required to keep systems running smoothly.

Core specifications

• Amperage: 100 A
• Poles: 1-Pole
• Voltage: 277 V
• Part number: EHB1100S

What makes this breaker stand out

• Direct compatibility for panels requiring a 100A, 1-pole, 277V protective device—perfect for commercial lighting and industrial control circuits powered by 277V systems.
• Rugged industrial construction designed to withstand vibration, temperature swings, and frequent cycling common in maintenance environments.
• Part-number–driven compatibility: the EHB1100S is your best reference to ensure you’re ordering the exact replacement for your existing panel.

Practical use cases

• Maintenance and retrofits for facilities with 277V distribution—protect feeders and branch circuits from short circuits and overloads.
• Replacement for aging breakers in industrial control panels, compatible with standard enclosures that accept single-pole devices.
• New installations where 100A protection is required for a specific 277V circuit, such as critical lighting banks or facility automation lines.

Installation notes and compatibility

Before ordering, confirm fit and ratings to ensure seamless integration with your panel. The best reference for compatibility is the part number EHB1100S, which aligns with the panel’s circuit protection requirements and bus bar interface.

Care and safety

Always follow lockout/tagout procedures and verify that the system is de-energized before servicing. Check torque specifications per your panel manufacturer guidelines and ensure the device is rated for the intended environment and conductor sizes.