General Electric | THJK636300 | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On

General Electric THJK636300 Circuit Breaker — 3-Pole, 600V, 300A, Bolt-On

The GE THJK636300 is a rugged three‑pole circuit breaker designed for demanding 3‑phase power systems. Built for maintenance, retrofit, and replacement tasks, this bolt‑on unit provides reliable overcurrent protection in industrial panels that run at up to 600 volts and handle up to 300 amps per circuit.

Core specifications at a glance

• Amperage: 300A
• Poles: 3‑Pole
• Voltage rating: 600V
• Mounting: Bolt‑On
• Part reference: General Electric THJK636300

Why this breaker stands out

Designed for three‑phase systems, this GE breaker protects all three conductors simultaneously, helping prevent downstream equipment damage from overloads. The bolt‑on design ensures a solid, vibration‑tolerant attachment in heavy‑duty panels, making service and replacements quicker and more secure in environments with frequent maintenance or panel upgrades.

Ideal use cases

• Retrofit projects where a compatible GE replacement is required to match existing panel configurations
• Maintenance and service outages in manufacturing lines, compressors, conveyors, and other three‑phase equipment
• Spare part in industrial control rooms and switchgear cabinets to minimize downtime during upgrades
• New installations in compatible GE‑style panels that specify a 3‑pole, 600V, 300A bolt‑on breaker

Installation & compatibility notes

Before ordering, verify fit and ratings against your panel’s specification. The THJK636300 part number is the most reliable reference for compatibility, ensuring correct mounting geometry and electrical fit for your 3‑phase, 600V systems.

Practical guidance for best results

• Inspect the mounting surface and hardware to ensure a clean, undamaged interface for bolt‑on installation
• Follow your panel manufacturer’s guidelines for torque specifications on the mounting bolts
• Use this unit specifically where a 3‑pole configuration is required to protect all three phases equally

Whether you’re performing a targeted retrofit, stocking standard spare parts for scheduled maintenance, or upgrading a legacy installation, the General Electric THJK636300 Circuit Breaker delivers dependable 3‑phase protection with a straightforward bolt‑on installation that aligns with 600V electrical systems and 300A circuits.