General Electric THLC134040 40A 3-Pole 480 V Circuit Breaker

The General Electric THLC134040 is a purpose-built protection device for 480-volt three-phase systems. This 40 A, 3-pole circuit breaker (Part Number THLC134040) is designed to interrupt power quickly and reliably when faults occur, helping safeguard motors, drives, and other heavy equipment in industrial and commercial settings.

• Part number: THLC134040
• Current rating: 40 A
• Poles: 3
• Voltage rating: 480 V

When you’re running a three-phase load at 480 V, the 3-pole design ensures all three live conductors are disconnected together during a fault. This coordinated shutoff reduces the risk of dangerous phase-to-phase conditions and supports safer maintenance practices in busy electrical environments.

Why this THLC-series breaker stands out

Built to match GE’s standard of reliability, the THLC134040 provides a definitive protection layer for circuits feeding 3-phase equipment operating at 480 V. Its exact rating of 40 A is ideal for loads that regularly approach but do not exceed the circuit’s safety threshold, helping prevent nuisance trips while still guarding against overloads.

Ideal use cases

Best suited for protecting 3-phase motors, pumps, conveyors, and HVAC equipment in manufacturing floors, data centers, loading docks, and other facilities that run at 480 V. It’s a precise replacement and upgrade option for GE panels and compatible THLC-series installations where a 40 A, 3-pole, 480 V solution is required.

Installation and practical tips

• Confirm your system is a 3-phase 480 V setup and that a 40 A protection level matches the load current.
• Ensure panel and enclosure compatibility with GE THLC-series breakers before installation.
• Follow all local electrical codes and lockout/tagout procedures during replacement or installation.
• When replacing an existing breaker, use a device with the same part number (THLC134040) to maintain fit and electrical characteristics.

Choose the General Electric THLC134040 for dependable, field-proven protection in 480 V, three-phase circuits. This exact part delivers targeted protection for demanding industrial environments while aligning with GE’s trusted legacy in electrical safety and reliability.