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B1H UL 489 480Y/277 Vac Miniature Circuit Breaker
These branch circuit breakers are available in two terminal configurations: standard box terminals that accept multiple conductors and ring-tongue terminals. All breakers mount on standard 35 mm DIN rail. Bus connectors and feeder terminal facilitate mounting and wiring of multiple miniature circuit breaker arrays in control panel assemblies. Breakers can also be reverse feed.

  • Complete range of UL 489 listed miniature circuit breakers up to a 32 A current rating

  • Breakers mount on standard 35 mm DIN rail

  • Standard ratings of 10 kA at 480Y/277Vac

  • Suitable for branch circuit device protection

  • Trip-free design - breaker cannot be defeated by holding the handle in the ON position

  • Captive screws cannot be lost

  • For use in applications for which UL 1077 or CSA C22.2 No.235 are also allowed

  • Field installable shunt trip and auxiliary switch subsequent mounting

  • Available with provisions for ring tongue terminals

  • Module width of only 0.71 in (18 mm) per pole

  • Contact position indicator (red/green)

  • Possibility for locking the toggle in ON or OFF position



UL 489 Listed

Certification File:


Compliant to:

CSA C22.2 No. 5, IEC/EN 60947-2, CE, RoHS

Rated Current

0.5~32 A

Number of Poles

1, 2, 3

Rated Operational Voltage (50/60 Hz)

480 Y / 277 Vac

Instantaneous Tripping Type

B (3~5 In), C (5~10 In), D (10~20 In)