Altech® UL489 Miniature Molded Case Circuit Breakers Offer Highest Rating In The Industry


New Altech® 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.

Only 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 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.


• AC Version Current/ Voltage Rating - 0.2-63A/240VAC, 0.2-32A/480Y/277VAC* • DC Version Current/ Voltage Rating - 0.2-63A/125/250VDC • Calibration Temperature - 40°C (104°F) • Operating Temperature - -25° to 60°C (-13° to 140°F) • Storage Temperature - -25° to 75°C (-13° to 167°F) • Solid Wire - 18 AWG -10 AWG • Stranded Wire - 18 AWG -6 AWG • Terminal Torque - 2.8 Nm (25 lb-in.) • Terminal Protection Degree - IP20 • Electrical Life - 6000 cycles on/off • Mechanical Life - 100000 cycles on/off • Wire Connection - copper wire only 60/75°C
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