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The B1H3C30 NOARK 3-Pole 30A Circuit Breaker is designed for 480/277V applications, ensuring reliable protection and efficient power management. With a compact DIN rail design, it fits seamlessly into your electrical panel. Rated for a fault current of 10kA, this breaker guarantees safety and performance for your electrical systems.
The B1H3C30 uses standard DIN rail mounting, so it installs into any compatible industrial or commercial enclosure or panelboard fitted with a DIN rail. It is rated for 480/277V 3-phase wye systems and is not suitable for residential loadcentres. If you're unsure whether your enclosure is compatible, contact our team with the enclosure model and we'll confirm.
Yes — NOARK is an internationally recognized brand and Northern Breaker Group actively stocks and sources B1H series breakers for Canadian customers. If the B1H3C30 is not immediately on our shelf, we specialize in locating hard-to-find and obsolete breakers. Reach out to one of our Calgary, Edmonton, or Vancouver counters for current availability.
The 10kA interrupting rating means the B1H3C30 can safely clear fault currents up to 10,000 amperes without damage to the breaker or panel. For many commercial 480/277V branch-circuit applications this is adequate, but you should verify the available fault current (AFC) at your panel's location with your engineer or electrician. If your system's AFC exceeds 10kA, a higher-rated breaker will be required to meet CEC safety standards.
