General Electric | THJK636400LL | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

General Electric THJK636400LL is a rugged, bolt-on circuit breaker engineered for serious electrical protection in industrial and commercial systems. With a 400A rating, 3-pole configuration, and a 600V maximum, this GE part is purpose-built for maintenance, retrofit, and replacement projects where precise compatibility matters most.

Why this GE circuit breaker stands out

• High-current capability—400A continuous protection to safely interrupt heavy load circuits without compromising reliability.
• Three-pole design—balanced protection for three-phase applications, helping protect motors, feeders, and large distribution circuits.
• 600V rating—suitable for a wide range of industrial power distribution scenarios, with ample headroom for modern electrical installations.
• Bolt-on mounting—secure, straightforward installation that minimizes service time and helps maintain robust panel integrity.
• Exact GE compatibility—part number THJK636400LL as the definitive reference for fit, ensuring seamless integration with existing GE panels and THJK-series footprints.
• Maintenance, retrofit, or replacement—a practical choice whenever you’re upgrading, repairing, or renewing protection in established electrical systems.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Bolt-On
• Part number reference: THJK636400LL

Ideal use cases

• Replacing worn-out or failed breakers in GE panels that require a THJK-series bolt-on solution.
• Retrofits for industrial equipment and large-motor feeders where a high-current, three-phase disconnect is needed.
• Maintenance upgrades within service entrances or main disconnect assemblies that demand exact GE compatibility.

Practical guidance for a smooth purchase

Before ordering, verify that the THJK636400LL matches your panel’s ratings and physical footprint. The part number serves as the best reference for compatibility, helping you avoid mismatches in mounting or electrical characteristics. When planning installation, ensure the panel supports bolt-on breakers and that appropriate mounting hardware is available to secure the device.

What you gain with this part

With the GE THJK636400LL, you receive a purpose-built solution designed to protect high-current, three-phase circuits in demanding environments. Its bolt-on design simplifies service and minimizes downtime, while its precise electrical ratings deliver dependable performance aligned with your system’s protection strategy. For engineers and technicians aiming for reliable, code-conscious upgrades, this breaker delivers the exact fit and capabilities required for robust, long-term protection.