GE TJK436400WL - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered for demanding electrical environments, the GE TJK436400WL is a 400A, 600V, 3-pole molded case circuit breaker designed to deliver dependable branch-circuit protection in panelboards and load centers. Its compact molded-case design maximizes panel space, while the thermal-magnetic trip unit provides stable, repeatable protection against both overloads and short circuits. engineered for seamless integration with GE OEM load centers and panelboards, this 3-pole breaker is a reliable choice for three-phase applications across residential, commercial, and light industrial settings.

Key benefits

• Compact molded-case design: Maximizes available space inside panelboards and load centers without compromising protection.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by responding to both sustained overloads (thermal) and short circuits (magnetic) for faster fault clearing.
• 3-pole configuration: Ideal for 3-phase systems, providing coordinated protection across all conductors in the circuit.
• High-amp and voltage rating: 400A capacity at up to 600V, suitable for large branch circuits and main feeders.
• OEM compatibility: Designed to drop into GE-aligned load centers and panelboards for a plug-and-play fit and reliable performance.
• Versatile applications: Suitable for residential, commercial, and light industrial environments where robust protection is essential.

Ideal use cases

• Main feeder protection in commercial panelboards and large subpanels.
• Protection for large residential service entrances or multi-family installations requiring 400A capacity.
• Control panels and light industrial equipment where three-phase reliability is critical.
• Replacement in GE OEM systems to maintain compatibility and consistent protection curves.

Technical specifications at a glance

• Manufacturer: GE
• Part Number: TJK436400WL
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this GE breaker stands out

• The 3-pole design is purpose-built for three-phase systems, ensuring coordinated protection across all conductors in the circuit.
• The thermal-magnetic trip unit delivers reliable performance under varying load conditions, reducing nuisance trips while delivering fast response to short circuits.
• OEM compatibility means straightforward installation in GE load centers and panelboard ecosystems, helping maintain labeling, warranty, and performance consistency.

Practical considerations

When selecting this breaker, confirm your panel is rated for 400A and supports a 3-pole molded case device. Always follow local electrical codes and the panel manufacturer’s guidelines for installation, calibration, and safe operation. For ongoing reliability, pair with GE-listed components in compatible GE load centers to ensure optimum trip performance and system protection.