Skip to main content

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

US Navy submarine

Press release | 02. 18. 2026

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

L3Harris Technologies has received its largest full-rate production contract for communications systems from General Dynamics Electric Boat to deliver 26 shipsets for Virginia- and Columbia-class 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

Australia VP, Alan Clements

Editorial | 01. 12. 2026

Accelerating Mission Readiness in the Indo-Pacific: L3Harris’ Alan Clements on Australia’s Naval Transformation

SHIELD thumbnail

Editorial | 11. 19. 2025

Cracking the Code for Resilient, Secure Space-based Communications

Ship at sea. Photo credit: CIVMEC

Editorial | 11. 05. 2025

Advancing Australia’s Maritime Future: L3Harris and the SEA1180 Offshore Patrol Vessel Project

Resources

  • ACB-4012 Air Circuit Breaker Data Sheet

    ACB-4012 Air Circuit Breaker Data Sheet

Related Domains & Industries

Solutions that solve our customers' toughest challenges.
view all capabilities