Westinghouse LB3100 100A 3-Pole 600V Circuit Breaker

Meet the Westinghouse LB3100 circuit breaker—a dependable 100A, 3-Pole device rated for 600V that’s ideal for maintenance, retrofit, and replacement tasks where exact specifications matter. When your panel or distribution system demands a precise, compatible 3-phase solution, the LB3100 is built to align with your existing setup and keep critical circuits protected.

Key specifications

• Amperage: 100A
• Poles: 3-Pole
• Voltage: 600V
• Reference: Part number LB3100

Why this breaker stands out

The LB3100 is designed to provide reliable overcurrent protection for three-phase circuits in commercial and light industrial environments. Its 3-Pole configuration supports balanced 3-phase distribution, helping to safeguard motors, relays, and other heavy-duty loads from damage due to faults or overloads. Built with compatibility in mind, this breaker is a practical, ready-to-install replacement that aligns with Westinghouse panels and other systems that specify the LB3100 reference.

Ideal use cases

• Replacing aging or failed 3-Pole breakers in commercial electrical panels that require 100A/3-phase protection.
• Retrofit projects where a matching LB3100 part number ensures seamless panel compatibility.
• Maintenance of three-phase equipment such as HVAC units, conveyors, pumps, and manufacturing line gear wired for 600V systems.
• New installations in facilities with existing Westinghouse-compatible infrastructure that require a reliable 3-phase disconnect.

Installation and compatibility tips

• Always confirm fit and ratings before ordering—the part number LB3100 is the best reference for compatibility.
• Check your panel labeling and catalog to ensure your system is designed for 600V and 100A 3-phase protection.
• Ensure the circuit breaker is wired for a true 3-Pole configuration to maintain proper phase protection.
• When in doubt, consult a licensed electrician to verify panel compatibility and safe installation practices.

What to expect after you install

With the Westinghouse LB3100 in service, you’ll have a robust safeguard for three-phase loads, contributing to system reliability and safer operation of high-demand equipment. This breaker provides a straightforward, dependable solution for upgrading or maintaining your electrical distribution without overhauling your panel architecture.