General Electric THLC434400 400A 3-Pole 480 V Circuit Breaker

Power your 480V, three-phase electrical distribution with precision using the General Electric THLC434400. This 400A, 3-pole circuit breaker is designed to protect industrial and commercial systems from overloads and faults, ensuring quick isolation of the faulty circuit to minimize downtime.

What makes the THLC434400 unique

The THLC434400 belongs to GE's robust THLC line, purpose-built for demanding 480V applications. With a 400A continuous current rating and three poles, it provides reliable protection across all three phases in your distribution panel. Built to withstand industrial environments, this breaker delivers consistent trip performance, clear status indication, and straightforward installation in compatible GE panels.

Key specifications

• Model: THLC434400
• Brand: General Electric (GE)
• Current rating: 400 A
• Poles: 3
• Voltage rating: 480 V

Ideal use cases

• Primary protection for 3-phase 480V electrical distributions in manufacturing facilities, warehouses, and data centers.
• Replacement or upgrade of older protective devices in GE-compatible panels.
• As a main or sub-feed protection point in industrial control systems where reliable fault isolation matters.

Practical considerations and installation tips

Before integrating, verify mechanical fit and panel compatibility with GE THLC-series devices. Check local electrical codes and panel manufacturer guidelines to ensure correct mounting, sizing, and electrical clearances. Maintain routine inspections for overheating indicators or signs of wear on terminals.

Reliability and support you can trust

Choosing a GE circuit breaker means prioritizing proven performance in demanding environments. The THLC434400 delivers dependable fault interruption across 3 phases, helping to reduce unplanned downtime and protect connected equipment. If you're building or upgrading a 480V distribution system, this 400A, 3-pole breaker is designed to meet the demands of real-world industrial operation.