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About This Item


Full Description

Covers molded case circuit breakers and molded case switches, single-pole and multi-pole, fused and unfused, together with accessories used with them.

These circuit breakers and switches are assembled as integral units in supporting housings of insulating material and have rated voltages up to and including 1000 V, 50/60Hz, AC or AC/DC, and have rated interrupting current ratings of 5000 Amperes or more.

Document History

  1. ANSI/NEMA AB 3-2013


    Molded Case Circuit Breakers and Their Application

    • Most Recent
  2. ANSI/NEMA AB 3-2012

    Molded Case Circuit Breakers and Their Application

    • Historical Version
  3. ANSI/NEMA AB 3-2006

    Molded-Case Circuit Breakers and Their Application

    • Historical Version