HJL432400 | Circuit Breaker | 400A | 3-Pole | 480V

The HJL432400 | Circuit Breaker | 400A | 3-Pole | 480V is built for serious industrial environments where dependable protection matters. Designed for 480V three‑phase systems, this 400A, 3‑pole breaker delivers precise overcurrent protection for feeders, motors, and distribution panels, helping you minimize downtime and protect critical equipment.

1. Exact, purpose-built specs: 400A current rating paired with a 3‑pole configuration makes it ideal for 3‑phase power distribution in factories, plants, and utility rooms. The 480V operating range aligns with common industrial power standards, ensuring seamless integration into your existing electrical infrastructure.
2. Designed for maintenance, retrofit, and replacement: This breaker is purposefully selected for upgrade projects, equipment refurbishments, or replacing a failed unit in legacy panels. When you need to restore reliable protection without major panel redesign, this unit fits the bill.
3. Clear compatibility signals: The part number HJL432400 is your strongest reference for compatibility. Before ordering, verify that the fit and ratings match your cabinet, bus configuration, and fault‑interrupt requirements to avoid delays.
4. Durable, industrial-grade construction: Built to withstand demanding environments, this circuit breaker supports consistent trip performance and long service life in maintenance rooms, service bays, and production floors.
5. Practical, real‑world use cases:
   • Retrofits of aging 480V panels in manufacturing lines where downtime is costly
   • Replacement of failed breakers in 3‑phase feeders feeding motors, conveyors, and pumps
   • New installations in facilities that operate at 480V three‑phase power and require reliable protection across multiple feeders

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 480V

Installation and care

To ensure optimal performance, confirm the breaker’s fit and ratings against your panel’s model and bus arrangement before purchase. Use the part number HJL432400 as the primary compatibility reference, and verify any panel‑specific constraints, such as trip curve, mounting footprint, and accessory requirements. When installed correctly, this breaker offers predictable tripping behavior, reliable protection, and minimal surprises during maintenance outages.