NOARK · UL 489 SC DC MCB, 25–63A, 500/1000Vdc
Product overview
Original NOARK B1B UL 489 Supplement SC photovoltaic DC miniature circuit breakers. Select 2P/500Vdc or 4P/1000Vdc and the documented 25–63A current.
Technical selection summary
| Manufacturer / series | Original NOARK B1B |
|---|---|
| Standard / listing | UL 489 Supplement SC Listed, file E532291; photovoltaic DC application |
| Pole / voltage ratings | 2P: 500Vdc; 4P: 1000Vdc; use the exact manufacturer series wiring |
| Rated current | 25, 32, 40, 50 or 63A |
| Tripping curve | C; only the ten exact C-curve codes listed on the manufacturer product portal are offered |
| Interrupting rating | 10kA at the applicable DC voltage and pole configuration |
| Connections / mounting | Box-lug terminals; DIN rail mounting |
UL 489 Supplement SC is the documented photovoltaic DC listing. Do not apply the device as a general AC MCB or exceed the pole-dependent DC voltage. Follow the exact DC wiring and coordination requirements.
Typical applications
- Photovoltaic DC overcurrent protection within the documented UL 489 SC listing.
- DC equipment circuits using the exact 2P/4P wiring and voltage limits.
Specify your enquiry
For a focused quotation, include:
- Selected model, poles, current and all applicable configuration options.
- Actual system voltage, frequency, protection duty and required accessories.
- Quantity, installation conditions, destination and required product documentation.
Download NOARK B1B catalogue (PDF)
Product reference images and drawings
