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The NORB1H3C5 is a reliable NOARK 3-phase circuit breaker rated at 5A for 480/277V applications. Featuring a C-Curve with a trip range of 5-10 times the rated current, this standard breaker ensures excellent protection for your electrical systems. Ideal for various industrial and commercial environments, it offers peace of mind and safety.
A C-Curve means the NORB1H3C5 will trip instantaneously when the current reaches 5 to 10 times its rated 5A (i.e., 25A–50A). This makes it well-suited for protecting general industrial loads, lighting circuits, and small transformers or equipment with moderate inrush currents — not heavy motor loads, which typically require a D-Curve breaker.
Yes. The breaker carries a dual voltage rating of 480V (line-to-line, three-phase) and 277V (line-to-neutral), making it compatible with standard North American 480Y/277V commercial and industrial distribution systems. Always verify your system voltage and confirm the breaker's interrupting rating meets your available fault current before installation.
NOARK is a globally recognized brand whose products can sometimes be difficult to source locally in Canada. Northern Breaker Group specialises in obsolete and hard-to-find breakers, and we work to source NOARK B1H-series breakers for our customers. Contact our Calgary, Edmonton, or Vancouver counters or request a quote online — we'll advise on availability and lead times.
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