XM433400 | Circuit Breaker | 400A | 3-Pole | 480V | Bolt-On

The XM433400 Circuit Breaker is a purpose-built 3-pole solution designed for industrial 480V three-phase systems. With a 400A current rating and bolt-on mounting, it delivers reliable protection and straightforward field installation for maintenance, retrofit, and replacement projects where exact specifications matter.

• Amperage: 400A rating suitable for protecting medium-to-large industrial circuits.
• Pole configuration: 3-pole design for balanced control across all phases.
• Voltage rating: 480V operation tailored for standard 3-phase industrial distribution.
• Mounting: Bolt-on mounting for secure, durable installation in compatible enclosures.
• Identification: Part number XM433400 ensures precise compatibility with appropriate panels and accessories.

This breaker is ideal for scenarios where existing equipment requires exact matching specifications—whether you’re performing routine maintenance, retrofitting legacy systems, or replacing a failed unit. The bolt-on design simplifies retrofit work in panels that support this mounting method, helping you minimize downtime and maintain electrical safety and reliability.

Use cases and practical applications

• Maintenance: Replace aging or faulty 3-pole 480V breakers to restore reliable protection in your distribution network.
• Retrofit: Upgrade or reconfigure existing panels to accommodate 480V, 400A three-phase circuits without extensive panel modifications.
• Replacement: Source a like-for-like part quickly using the XM433400 reference to preserve system compatibility.

Important compatibility notes

• Always confirm fit and ratings before ordering. The part number XM433400 is the best reference for compatibility with your enclosure and existing system.
• Ensure your panel and wiring infrastructure are rated for 480V and can accommodate a 400A, 3-pole breaker.
• Consult a qualified electrician for proper installation, de-energization procedures, and adherence to local electrical codes.