APC PG3P400AT5B 3-Pole 400A T5 Circuit Breaker

Deliver reliable, high-capacity circuit protection where uptime matters most. The APC by Schneider Electric PG3P400AT5B 3-Pole 400A T5 circuit breaker is built to safeguard critical power chains in data centers, network closets, and security & surveillance installations. With a 3-pole configuration and a 400A continuous rating, this breaker handles high-current three-phase loads for UPS systems, PDUs, and rack-level power distribution. The T5 trip characteristic provides selective coordination, reducing nuisance trips while protecting downstream equipment and monitoring hardware. Designed for compatibility with APC power infrastructures, the PG3P400AT5B streamlines maintenance and replacement in demanding environments and supports long-term reliability for monitoring, CCTV, and access-control systems. Choose this breaker to minimize service interruptions, simplify electrical coordination, and protect your security and networking investments. Contact your APC distributor or order today to secure power for your critical infrastructure.

• Protects mission-critical power: delivers dependable overcurrent protection to reduce downtime for data centers, security, and surveillance systems
• High-capacity 400A rating: supports heavy loads and UPS-fed equipment without compromise
• 3-pole design for three-phase systems: ensures balanced protection across all phases for networking and power distribution
• T5 trip curve for selective coordination: minimizes nuisance trips while enabling integration with upstream breakers and PDUs
• Simplifies maintenance and upgrades: compatible with APC power distribution architecture for faster replacements and predictable system behavior