Eaton BK/CBC-20 CBC Automotive Circuit Breaker - 1.5 kAIC
Part Number: BK/CBC-20
Quick Summary
CBC automotive circuit breaker from Eaton protects DC automotive circuits by interrupting faults quickly. This BK/CBC-20 model is designed for harsh automotive environments where space is tight and reliability matters. A common challenge is nuisance trips from vibration and power surges; the heavy-duty Type I design helps resist that, keeping critical circuits online. While specific certifications vary by region, CBC series devices are built to meet general automotive safety expectations and can be evaluated against standards such as CE and SIL where applicable. Using this breaker translates to lower maintenance costs, reduced downtime, and consistent protection across fleets. Its compact footprint and straightforward #10-32 TPI stud connection simplify installation in cramped engine bays and wiring looms.
Product Information
Extended Description
BK/CBC-20 Eaton: Eaton Bussmann series CBC automotive circuit breaker, Packaging quantity 100, 14 Vdc, 20 A, 1.5 kAIC, Type I, Heavy duty, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC automotive circuit breaker
Catalog Number
BK/CBC-20
UPC
051712556569
Product Length/Depth
0.55 in
Product Height
1.27 in
Product Width
1.7 in
Product Weight
0.5 lb
Compliances
Contact factory
Amperage Rating
20 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
Quantity
6
Special features
Packaging quantity 100
Bussmann series 4-foot automotive planogram no.10730
BK/CBC-20~BK-CBC-20~CIRCUIT BREAKER
BK/CBC-20~BK-CBC-20~CIRCUIT BREAKER
Bussmann series Fuseology
Eaton Specification Sheet - BK/CBC-20
Electrical ratings and protective function: The BK/CBC-20 delivers 20 A at 14 Vdc with a 1.5 kAIC interrupt rating, providing fast fault interruption to protect wiring and components. This leads to fewer cord-fusing events and lower downstream damage in all DC automotive circuits. Application: battery lines, starter circuits, and accessory feeds in cars, trucks, and commercial vehicles benefit from reliable overcurrent protection and simplified wiring integration. Rugged design for automotive environments: The heavy-duty Type I construction enhances resistance to vibration, heat, and oscillation typical of engine compartments. Business impact: improved uptime and reduced service calls, especially in fleets with high mileage. Application: under-hood harnesses and ruggedized modules require dependable protection to avoid intermittent trips.
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FAQs
Install BK/CBC-20 using the standard #10-32 TPI stud connections. Ensure the harness lugs are rated for 14 Vdc and 20 A and that there is adequate clearance for installation in the target location. Verify proper routing to minimize vibration exposure and use appropriate terminal hardware to maintain a reliable connection. This approach reduces false trips and supports long-term reliability in automotive environments.
BK/CBC-20 is rated for 20 A continuous current at 14 Vdc with an interrupt rating of 1.5 kAIC. It features Type I, heavy-duty construction designed for automotive use and a compact footprint with a 0.55 in depth, 1.7 in width, and 1.27 in height. These specs ensure reliable protection for DC circuits in vehicles while fitting into tight installation spaces.
Yes. The CBC-20’s heavy-duty Type I design is intended to withstand automotive vibration and temperature fluctuations commonly found in engine bays. This makes it a suitable choice for critical circuits such as battery feeds and starter connections where stable protection and low nuisance trips are essential for reliable vehicle operation.
Certification details for BK/CBC-20 vary by region and application. Eaton notes 'Contact factory' for compliances on this model, so regional validations such as CE or UL recognition should be confirmed with the manufacturer for your specific market or customer requirements. Always verify regulatory compliance before deployment in regulated environments.
The rugged design reduces nuisance trips and maintenance events, contributing to lower fleet downtime and a favorable total cost of ownership. With a packaging quantity of 100 units and straightforward installation, procurement and stocking are streamlined for maintenance cycles. Regular inspection of connections and replacement after expected circuit life in high-load automotive environments helps sustain reliability and project ROI.