APC 0M-PMMTCB4021 L-Frame Circuit Breaker, 400A, 240V

Ensure uninterrupted protection for your critical systems with the APC by Schneider Electric L-Frame Circuit Breaker. Engineered for mission-critical environments such as security control rooms, surveillance installations and monitoring centers, this L-Frame 400A breaker combines dependable interruption performance with precise trip coordination. Rated at 400A with a 100% continuous rating and a 25 kA interrupting capacity at 240V, it delivers the durable fault clearing you need to safeguard cameras, recorders, access control panels and network equipment.

The LSI trip profile (Long-time, Short-time, Instantaneous) gives electrical engineers the flexibility to fine-tune protection and minimize nuisance trips while preserving selectivity across distribution branches. Built by APC by Schneider Electric, this circuit breaker supports streamlined installation and dependable service life in high-availability applications. Ideal for integrators and facility managers who need resilient power distribution for security, surveillance and IT infrastructure. Order the APC 0M-PMMTCB4021 L-Frame breaker today to upgrade protection and reduce risk in your electrical systems.

• Protects critical assets: high-performance L‑Frame design reduces downtime for security, surveillance and monitoring systems.
• Reliable fault clearing: 25 kA interrupting rating at 240V delivers robust protection against short circuits and overloads.
• Full-load capability: 400A with a 100% rating supports continuous operation for demanding power distribution applications.
• Precise trip coordination: LSI (Long-time, Short-time, Instantaneous) trip characteristics enable selective protection and faster recovery.
• Easy integration: compact L‑Frame footprint and industry-standard connections simplify installation into existing electrical and security infrastructure.