General Electric FVK400JK 400A 3-Pole 600 V Circuit Breaker

Meet the General Electric FVK400JK 400A 3-Pole 600 V Circuit Breaker—the rugged protection your high-demand electrical systems can rely on. Built to handle substantial loads, this GE breaker isolates faults quickly and reliably, helping keep critical equipment running and vulnerable circuits safe from damage.

Designed for three-phase distribution, the FVK400JK delivers robust protection across all three conductors while sharing a common trip to prevent phasing faults. With a 400 A current rating and a 600 V maximum voltage, it’s well-suited for commercial and industrial panels that power motors, compressors, pumps, and other demanding equipment.

Key specifications

• Current rating: 400 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: FVK400JK
• Brand: General Electric

Why this GE breaker stands out

• Part of GE’s trusted protection line, the FVK400JK is engineered for dependable performance in demanding environments where three-phase protection matters most.
• Three-pole design ensures coordinated outage protection across all phases, reducing the risk of unbalanced loads and cascading faults.
• The 600 V rating provides a clear safety margin for common industrial and commercial distribution panels, helping manage higher voltage sections with confidence.
• Part of a streamlined GE ecosystem—easy identification and replacement in compatible GE panels and systems when a spare or replacement is needed.

Ideal use cases

• Large three-phase motors in manufacturing lines, conveyors, and pumps
• Air handling and HVAC systems that rely on reliable three-phase power
• Industrial feeders and power distribution panels in data centers, warehouses, and facilities that demand stable protection

Installation and practical considerations

• Use with compatible GE 3-pole distribution panels and equipment designed for a 600 V class circuit breaker.
• Have a qualified electrician verify panel compatibility, mounting criteria, and labeling before installation.
• Confirm the circuit’s current demand aligns with the 400 A rating to ensure proper protection while maintaining system efficiency.
• Keep the Part Number (FVK400JK) handy for replacements, ordering, and service documentation.