GE TJK436300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

The GE TJK436300 is a heavy-duty three-pole molded-case circuit breaker designed to protect your electrical system from overcurrent and short circuits. With a 300A rating at 600V, this unit is built to handle demanding panelboard and loadcenter applications in residential, commercial, and light industrial settings. Available from AmpState, it’s a reliable choice when you need robust protection that fits within standard GE OEM panels.

• Compact molded-case design: Maximizes panel space while delivering solid arc-quenching and current interruption performance.
• Thermal-magnetic trip unit: Provides stable, repeatable protection by automatically responding to both overloads and short circuits with fast, predictable trips.
• OEM-compatible: Designed for seamless compatibility with matching GE OEM load centers and panelboards for straightforward installation and dependable operation.
• Versatile application: Ideal for new installations or upgrades in homes, offices, retail environments, and light manufacturing facilities where space and reliability matter.
• Targeted protection: Specifically engineered for branch circuit overcurrent and short-circuit protection, helping to safeguard wiring, devices, and downstream equipment.

Technical specifications

• Manufacturer: GE
• Part Number: TJK436300
• 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

Who this is for: electricians, facilities managers, and property owners planning panel upgrades or new installations where GE equipment is already in use or where reliable, OEM-compatible protection is required. The TJK436300 simplifies replacement and maintenance by matching the form factor and mounting scheme of GE load centers, reducing wiring complexity and ensuring consistent performance.

Practical notes for use:

• Ensure your panelboard is designed to accept a 3-pole, 600V, 300A molded-case breaker.
• Confirm compatibility with the specific GE load center model to enable a clean, secure installation.
• Engage a qualified electrician for proper torque on terminals and correct alignment with the bus bars to minimize nuisance trips and ensure reliable protection.