General Electric | THJK636300LL | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On

Meet the General Electric THJK636300LL—an industrial-grade circuit breaker engineered for demanding 3‑phase systems. This 300A, 3‑pole, 600V bolt‑on model delivers reliable overcurrent protection in retrofit, maintenance, and replacement projects where exact spec alignment matters most.

Key specifications at a glance

• Amperage: 300A
• Poles: 3‑Pole
• Voltage rating: 600V
• Mounting: Bolt‑On
• Part reference: THJK636300LL
• Best use cases: maintenance, retrofit, replacement where matching specs are required

Why this bolt‑on design stands out

Designed for secure, durable installation, the bolt‑on mounting of the THJK636300LL provides a solid mechanical fit in compatible GE panels and enclosures. The 3‑pole configuration safeguards three‑phase circuits, delivering coordinated protection across all live conductors. With a 600V rating, it’s suited for higher‑voltage applications common in industrial environments, manufacturing lines, and large facilities that rely on stable, predictable protection for essential equipment.

Ideal use cases

• Replacing worn or damaged 300A, 3‑pole breakers in existing GE panel systems
• Retrofit projects where a matching THJK636300LL component is required to restore original protection characteristics
• Maintenance intervals that demand a reliable, high‑capacity circuit breaker for three‑phase feeders
• New installations in compliant, bolt‑on GE‑style enclosures that call for a precise 600V, 3‑pole solution

Installation notes and practical tips

• Always confirm fit and ratings before ordering. The part number THJK636300LL is the most reliable reference for compatibility with your enclosure and system.
• Ensure the enclosure accepts bolt‑on mounting and that the panel’s electrical ratings align with a 600V, 3‑pole, 300A device.
• Follow standard safety practices: de‑energize and lock out/tag out the circuit before installation, and verify connections are secure after mounting.
• Keep a spare THJK636300LL on hand for planned maintenance or rapid replacement to minimize downtime.

For professionals upgrading or maintaining three‑phase power protection, the GE THJK636300LL offers a precise, reliable upgrade path—delivering dependable circuit protection where it matters most.