Miniature Circuit Breakers

Miniature circuit breakers for branch circuits, control panels, and equipment protection where compact, resettable overcurrent protection is required. Miniature breakers commonly protect branch and control circuits within electrical cabinets, whereas molded-case units handle larger feeders. Specify breaking capacity, trip curve and pole arrangement before choosing physical width. Some listed devices are UL 1077 supplementary protectors rather than general UL 489 branch breakers; match the certification to the location and circuit purpose.