UL489 Miniature Molded Case Circuit Breakers

Aug. 4, 2006

UL489 AC and DC miniature molded case circuit breakers offer the highest rating in the industry for their type and can deliver reliable performance in a wide range of applications, including low inrush motors, appliances, lighting, wiring protection, transformers, power supplies, and industrial controls, among others. Industry-high ratings for the AC breaker versions are 32A at 480Y/277VAC and up to 63A at 240VAC. A DC version offers ratings of 125V (1 pole) and 250V (2 pole) up to 63A.


Altech offers three UL ratings (489, 508, and 1077) providing users with a variety of cost-effective solutions to satisfy particular application requirements. UL489 specified breakers enable, service entrance, feeder, or branch circuit protection and disconnect function; UL508 breakers can start, stop, regulate, control, or protect electric motors or industrial equipment; and UL1077 Supplementary Protectors protect again overcurrent for specific loads or applications.


These new UL 489 breakers are compact at 17.5mm wide and incorporate 1 pole, 2 poles, or 3 poles (standard) and 4-pole models. They are designed for easy DIN rail mounting and feature a user-friendly positive trip indicator (green/red) and short-circuit interrupt (capacity 10kA). Breakers are HVACR 40ºC rated. All the circuit breakers in the UL489 product line are CE-certified and RoHS-compliant.