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Air Circuit Breaker 4012

Air Circuit Breaker 4012

Many new standard features include RMS sensing, ground-fault detection, real-time state monitoring, bidirectional communications, control functions, under-voltage dropout, under-voltage lockout, power-up trip, charging motor protection and more.

Air Circuit Breaker 4012

Electronic Over Current Protection

By integrating electronic over current protection in the air circuit breakers, L3Harris eliminates the need for costly over current assemblies. This flexibility provides simplified ordering, application versatility, reduced parts inventory and reduced maintenance, resulting in manpower savings.

Featured News

Coast Guard at sea

Editorial | 04. 20. 2026

Protecting America's Shores: L3Harris Keeps the Coast Guard Mission-Ready

L3Harris delivers integrated communications, navigation and C4ISR capabilities that empower the U.S. Coast Guard to protect America's maritime interests and respond to evolving threats.

Coast Guard at sea

Editorial | 04. 20. 2026

Protecting America's Shores: L3Harris Keeps the Coast Guard Mission-Ready

submarine surfacing

Editorial | 04. 16. 2026

Maintaining America's Undersea Edge: L3Harris Secures Towed Array Production Through 2029

Torpedo Tube Launch and Recovery system

Press release | 03. 25. 2026

L3Harris to Provide Autonomous Underwater Capability for US Navy Submarines

US Navy submarine

Press release | 02. 18. 2026

L3Harris Secures Full-Rate Production Contract for US Navy Submarine Communication Systems

Al Seer Marine and L3Harris Agreement signing in the Middle East

Editorial | 02. 05. 2026

Al Seer Marine and L3Harris Deepen Strategic Agreement to Advance Maritime Unmanned Systems in the Middle East

Resources

  • ACB-4012 Air Circuit Breaker Data Sheet

    ACB-4012 Air Circuit Breaker Data Sheet

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