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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

SHIELD thumbnail

Editorial | 11. 19. 2025

Cracking the Code for Resilient, Secure Space-based Communications

L3Harris has achieved NSA Cybersecurity Directorate certification for its KSV-650. The certification represents the culmination of a multi-year development program as part of the Protected Tactical SATCOM (PTS) Space Hub Integrated Cryptographic Unit-Leading-Edge Development (SHIELD) program and continues L3Harris’ legacy of leadership in advancing secure communication technologies and protecting the nation from emerging cyber threats.

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

Canadian river-class frigate.  Credit: BAE

Editorial | 11. 03. 2025

L3Harris and ESL Labs: A Strategic Investment in Canada’s Defence Future

Submarine navigates waters

Editorial | 10. 21. 2025

In the Undersea Domain – Reliability is Key

Iver 4 rendering undersea

Editorial | 09. 30. 2025

A Proven Partner in Pioneering Undersea Autonomy

Resources

  • ACB-4012 Air Circuit Breaker Data Sheet

    ACB-4012 Air Circuit Breaker Data Sheet

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