GE TJK636300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

The GE TJK636300 is a robust 300A, 600V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its compact molded-case form optimizes panel space without sacrificing protection, making it an ideal upgrade or replacement option for modern electrical installations.

Key features

• Compact molded-case design: Maximizes available space inside panelboards and load centers, enabling cleaner, more organized electrical layouts.
• Thermal-magnetic trip unit: Provides stable, repeatable protection across varying loads and conditions, helping to minimize nuisance trips while responding quickly to genuine faults.
• OEM-compatible: Specifically designed to be used with matching GE OEM load centers and panelboards, ensuring seamless integration and reliable performance.
• Versatile applications: Suitable for residential, commercial, and light industrial environments where reliable three-phase protection is required.

Technical snapshot

• Manufacturer: GE
• Part Number: TJK636300
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

• Main disconnects and protection for residential service panels where a reliable 3-pole solution is needed.
• Protection for commercial distribution panels and light industrial equipment that operate on three-phase systems.
• Retrofit projects in GE panelboards or compatible OEM enclosures to restore or upgrade protection capacity.

Why this matters for your electrical setup

Choosing the GE TJK636300 means prioritizing dependable protection with a design that respects space constraints. The thermal-magnetic trip unit delivers precise trip characteristics, ensuring that only true faults prompt interruption while supporting steady operation under normal loads. With OEM compatibility, you gain a straightforward replacement path that minimizes downtime and preserves panel performance.

What to expect in the field

installers will appreciate the straightforward integration into GE-approved panelboards, the reduced panel clutter from the compact design, and the confidence that comes with a trusted GE protection solution. This 3-pole device is well-suited for multi‑wire or three-phase distribution scenarios common in modern residential, commercial, and light industrial setups.

If you’re upgrading an aging panel or outfitting a new installation that requires robust 3‑phase protection at 600V, the GE TJK636300 delivers clear, dependable performance with installation ease and long‑term reliability baked in.