Miniature Circuit Breakers

This category covers Allen-Bradley 1489 Miniature Circuit Breakers and their associated accessories, stocking 166 products across the full Bulletin 1489 MCB ecosystem. The majority of in-stock inventory consists of 1489-AMCL UL Listed bus bars — available in single-pole, two-pole, and three-pole configurations across multiple position counts — along with 1489-AMST shunt trip modules and terminal power feed components designed specifically for 1489-series breakers. These accessories are commonly specified when building or expanding DIN-rail-mounted branch circuit protection assemblies in control panels and machine enclosures. Electricians and panel builders sourcing 1489 MCB bus bars, shunt trip accessories, or power feed terminals for Allen-Bradley miniature circuit breaker installations will find catalog numbers across the breadth of the 1489 accessory lineup available here.