General Electric | TJJ426Y400 | Circuit Breaker | 400A | 2-Pole | 600V

General Electric’s TJJ426Y400 circuit breaker is built for demanding electrical systems, delivering reliable protection for high-current circuits. Designed for maintenance, retrofit, and replacement projects, this 400A, 2-pole unit is rated for up to 600V, making it a robust choice for commercial and industrial panels that require strong, coordinated disconnect on both hot legs.

• Amperage: 400A
• Poles: 2-Pole
• Voltage rating: 600V
• Part reference: TJJ426Y400 — use this number as the best compatibility reference

Why it matters

• Coordinated protection: The two-pole design ensures both lines shut off together, reducing the risk of neutral overload and providing a safer, more predictable interruption during faults.
• Exact fit for compatible systems: Built to suit panels and feeders that specify TJJ426Y400; using the correct part number helps avoid mismatches that can disrupt electrical safety and performance.
• Flexible use cases: Ideal for maintenance, retrofit, and replacement where high-current protection is needed in up to 600V service environments.

Ideal applications include large commercial or light industrial panels, service entrances, and equipment feeders where a reliable 400A, 2-pole breaker is required to protect circuits against overloads and short circuits.

Important ordering note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, so check your panel’s documentation or contact a qualified electrician if you’re unsure.