Miniature Circuit Breaker · 1P 1A C Curve 10 kA 250 Vdc · Box Lug DIN Rail Mount · Noark B1D1C1
What this product is for
The Noark B1D1C1 is a UL 489 listed DC miniature circuit breaker for overcurrent protection in main and branch DC circuits. It is a 1-pole, 1A breaker in the B1D series with a 250 Vdc rating, C-curve trip characteristic, thermal-magnetic operation, and 10 kA short-circuit rating.
Use for
Use it in DC control panels, industrial automation, battery-backed systems, renewable energy balance-of-system panels, and other DC branch circuits where a 1A protective device is required. It mounts on standard 35 mm DIN rail and suits panel layouts where compact modular protection is needed.
Avoid for
Avoid using it where AC-only breaker ratings are required, where the circuit voltage exceeds 250 Vdc on a 1-pole B1D device, or where a supplementary protector is specified instead of a branch-circuit-rated breaker. Confirm voltage, available fault current, conductor size, and terminal compatibility before ordering.
Best for
Best for electricians and panel builders needing a low-amperage DC breaker for control wiring, signalling circuits, and light DC branch protection with a C-curve profile. C-curve breakers are commonly used where moderate inrush current may be present, such as certain control devices, relays, and DC power supply circuits.
Installed in
Typically installed in industrial control panels, machinery panels, energy storage assemblies, and DC distribution enclosures. The breaker is designed for standard 35 mm DIN rail installation, which simplifies replacement and multi-device panel assembly.
Why this product exists
This product provides branch-circuit-rated DC protection in applications where standard AC miniature breakers or supplementary protectors are not the correct choice. It gives panel builders a compact UL 489 and CSA-certified option for low-current DC circuits while maintaining a 10 kA interrupting rating.
Compared with similar products
Compared with Noark B1N DC breakers, the B1D series is the higher-voltage 1-pole DC option, rated up to 250 Vdc instead of 60 Vdc for B1N 1-pole models. Compared with UL 1077 supplementary protectors, this B1D model is intended for branch-circuit protection. As typical guidance, a 1A breaker is commonly selected for low-load control or signalling circuits rather than power feeders; actual suitability depends on conductor sizing, connected load, and local electrical code.
Actual performance depends on installation conditions, conductor selection, available fault current, and local electrical code.
Specifications
- Manufacturer: Noark Electric
- Manufacturer part number: B1D1C1
- Product family: B1D series DC miniature circuit breaker
- Type: Miniature circuit breaker, branch circuit protection
- Pole configuration: 1-pole
- Rated current: 1 A
- Trip curve: C curve
- Trip technology: Thermal-magnetic
- Rated operational voltage: 250 Vdc
- Short-circuit current rating: 10 kA
- Terminal type: Box lug
- Mounting: 35 mm DIN rail (1.38 in)
- Certifications: UL 489 Listed, CSA C22.2 No. 5
- Operating temperature range: -30°C to +75°C (-22°F to +167°F)
- Maximum installation altitude: 6,561 ft (2,000 m)
- Poles1 Pole
- Amp1
- Rated Voltage (DC)125Vdc
- MountingDIN Rail
- Tripping curveC Curve
- Compliant with standard(s)UL489
CSA C22.2 No.5-16
UL489 (file number E355392)
UL486
IEC60947-2
RoHS compliant - Application typeBranch Circuit Protection
- Convenience receptacle circuits (internal/external)
- Motor control circuits
- Load circuits leaving the equipment (external)
- HVACR equipment -- heating / ventilation / air conditioning / refrigeration (internal/external)
- PLC I/O points
- Power supplies
- Control instrumentation
- Relays
- UPS
- Power conditioners - BrandNoark Electrical
- Warranty5 year
Minimum Order $20
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(Contractor Accounts)
Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.