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Mfr. Part #: B1H1C20
Ships same day with standard 2-day shipping if ordered M-F before 3PM PT.
Single-pole 20A C-curve miniature circuit breaker (MCB) B1H1C20, providing reliable branch circuit protection with 10kA interrupt rating.
Key Features:
• Noark Ex9/B1H Series miniature circuit breaker
• Single pole, C-curve type (tripping at 5–10× rated current)
• 20 A rated current; interrupt rating: 10 kA at 277 VAC / 480 Y VAC
• UL 489 listed, also compliant with CSA C22.2 No. 5 and IEC/EN 60947-2
• DIN-rail mountable (35 mm rail); box lug terminals; toggle lock and LED-style contact indicators
• Compact 18 mm width per pole
Common Applications:
• Branch circuit protection in electrical panels
• Motor control and load circuit safety
• HVAC, PLC I/O, relays, UPS, and instrumentation protection
• General industrial control and automation systems requiring reliable over-current protection
| Specification | Details |
|---|---|
| Model | B1H1C20 |
| Brand / Series | Noark Ex9 / B1H Miniature Circuit Breaker |
| Poles | 1 (Single-pole) |
| Trip Curve | C-curve (≈5–10× In) |
| Rated Current | 20 A |
| Interrupt Rating | 10 kA at 277 VAC / 480Y VAC |
| Standards / Listings | UL 489, CSA C22.2 No. 5, IEC/EN 60947-2 |
| Mounting | 35 mm DIN-rail |
| Terminals | Box lug |
| Module Width | 18 mm (per pole) |
| Typical Applications | Branch circuit protection, motor/load circuits, HVAC, PLC I/O, relays, UPS, instrumentation |



ID #: 189091