Eaton BK/CBC-50B Automotive Circuit Breaker - 1.5 kAIC
Part Number: BK/CBC-50B
Quick Summary
The Eaton BK/CBC-50B automotive circuit breaker protects vehicle electrical systems from faults by interrupting overloads. In the field, incorrect protection settings or undersized wiring can trigger nuisance trips and drive costly downtime. While the data lists Compliances as 'Contact factory' and Certifications as 'Contact Manufacturer', customers should verify CE, IP, or SIL certifications with Eaton to meet their compliance needs. This CBC-B device delivers rugged, automotive-grade protection that integrates with standard #10-32 TPI studs, supporting reliable power distribution and serviceability. By choosing CBC-B, engineers can improve system availability, reduce maintenance, and align with automotive electrical protection best practices.
Product Information
Extended Description
BK/CBC-50B Eaton: Eaton Bussmann series CBC-B automotive circuit breaker, Packaging quantity 100, 14 Vdc, 50 A, 1.5 kAIC, Type I, Heavy duty, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC-B automotive circuit breaker
Catalog Number
BK/CBC-50B
UPC
051712556613
Product Length/Depth
14.8 in
Product Height
5.2 in
Product Width
6.8 in
Product Weight
0.8 lb
Compliances
Contact factory
Certifications
Contact Manufacturer
Amperage Rating
50 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
Quantity
6
Special features
Packaging quantity 100
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Eaton Specification Sheet - BK/CBC-50B
Feature: 50 A amperage rating and 14 Vdc voltage rating provide precise protection for typical 12 V automotive electrical systems; Business Impact: limits conductor heating and reduces the risk of harness damage during fault conditions; Application: protects battery feeds, ignition circuits, and lighting harnesses in cars, trucks, and off-road equipment. Feature: 1.5 kAIC interrupt rating delivers robust fault clearance under high-current events; Business Impact: minimizes damage to wiring and components while maintaining system integrity; Application: reliable protection in heavy-duty automotive circuits subject to surge conditions. Feature: Type I heavy-duty construction enhances vibration and temperature resilience; Business Impact: longer service life in under-hood environments and reduced maintenance costs; Application: ideal for vehicles exposed to harsh operational conditions. Feature: #10-32 TPI stud connections simplify wiring and harness integration; Business Impact: faster installation and fewer crimp mistakes; Application: streamlined automotive assembly and field servicing. Feature: Packaging quantity and dimension data (pack options up to 100 units, product size 14.8 in x 5.2 in x 6.8 in, weight 0.8 lb); Business Impact: predictable stocking and space planning in distribution and service centers; Application: ease of procurement for fleet maintenance, repair shops, and OEMs. Feature: Compliance notes (Contact factory, Contact Manufacturer) emphasize the need to confirm specific certifications; Business Impact: ensures regulatory alignment for regulated environments; Application: supports compliance planning for automotive safety programs and supplier qualification.
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FAQs
BK/CBC-50B is designed to protect typical 12 V automotive circuits with a 50 A rating, 14 Vdc operation, and a 1.5 kAIC interrupt rating. It uses a #10-32 TPI stud connection for straightforward wiring and is suitable for battery feeds, power distribution, and accessory circuits in cars, trucks, and commercial vehicles.
Install by connecting the #10-32 TPI stud terminals to the appropriate battery or distribution harness. Ensure the system operates at ~14 Vdc and torque connections per OEM guidelines. Verify molded insulation and mounting clearance in the engine bay to withstand vibration and temperature, and confirm the device is properly seated in its mounting location.
The CBC-B is ideal for automotive power distribution, battery feeds, ignition circuits, and high-current branch circuits requiring rugged protection. Its 50 A rating, 14 Vdc operation, and heavy-duty Type I construction make it suitable for under-hood protection in passenger cars, light trucks, and off-road equipment.
The data lists Compliances as 'Contact factory' and Certifications as 'Contact Manufacturer.' For regulated deployments, verify with Eaton the actual certifications (CE, IP ratings, SIL where applicable) and ensure alignment with your vehicle safety and regulatory requirements before field deployment.
By providing reliable fault interruption (1.5 kAIC) and robust under-hood performance, the BK/CBC-50B reduces nuisance trips and associated downtime. Its standard wiring with #10-32 studs simplifies serviceability, lowers installation errors, and supports longer intervals between replacements, delivering lower total cost of ownership for fleet and OEM applications.