GE THJK436300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

GE THJK436300 is a 300 A, 600 V, 3-pole molded case circuit breaker engineered to safeguard branch circuits in panelboards and loadcenters. Its thermal-magnetic trip design delivers stable, repeatable protection, helping to prevent nuisance trips while quickly interrupting fault conditions.

• Compact molded case design maximizes panel space, enabling efficient layouts in both new installs and panel upgrades.
• Thermal-magnetic trip unit provides reliable overcurrent protection and fast short-circuit interruption, maintaining system safety under varying loads.
• 3-pole configuration ideal for three-phase distribution, ensuring balanced protection across all phases.
• High-current rating 300 A is suitable for large branch circuits and feeders common in commercial and light industrial applications.
• OEM panel compatibility specifically designed to work with matching GE OEM loadcenters and panelboards, simplifying replacements and upgrades.
• Versatile applications suitable for residential, commercial, and light industrial environments where dependable protection and space efficiency matter.

Technical specifications

• Manufacturer: GE
• Part number: THJK436300
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 300 A
• Voltage rating: 600 V
• Poles: 3 (three-pole)
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, expanding a commercial electrical room, or specifying components for a new build, the GE THJK436300 from AmpState delivers robust protection with space-efficient design and industry-aligned compatibility. Its reliable performance helps safeguard equipment, reduce downtime, and simplify panel maintenance in everyday electrical systems.