Eaton BK/CBC-50 Automotive Circuit Breaker - 1.5 kAIC
Part Number: BK/CBC-50
Quick Summary
The Eaton CBC automotive circuit breaker BK/CBC-50 provides reliable overcurrent protection for automotive electrical systems. Design engineers often battle nuisance trips, limited space in enclosures, and the challenge of rugged in-vehicle mounting. Precise certifications should be confirmed with the manufacturer; this product lists Certifications as 'Contact Manufacturer' and Compliances as 'Contact Factory' to verify CE, SIL, IP ratings for your application. With a 14 Vdc rating, 50 A amperage, and a 1.5 kAIC interrupt capacity, this unit is built for heavy-duty automotive use and demanding environments, improving uptime. The solution aligns with Eaton Bussmann CBC series protection, delivering code-compliant reliability while supporting fleet optimization and cost reduction through standardized components.
Product Information
Extended Description
BK/CBC-50 Eaton: Eaton Bussmann series CBC 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 automotive circuit breaker
Catalog Number
BK/CBC-50
UPC
051712556606
Product Length/Depth
13.31 in
Product Height
9.63 in
Product Width
1.94 in
Product Weight
0.34 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-50
The 50 A amperage rating provides continuous protection for automotive circuits while minimizing nuisance trips that disrupt critical loads. This translates to reduced unplanned downtime and improved uptime for fleets and mobile equipment. The 1.5 kAIC interrupt capacity enhances fault tolerance, enabling safe isolation of high-current faults without damaging wiring or adjacent components, which reduces repair costs and downtime in harsh automotive environments. The #10-32 TPI stud connection delivers a robust, reliable mechanical interface that simplifies wiring harness integration and resists vibration-induced loosening, supporting longer service life in off-road and heavy-duty applications. Packaging quantity 100 per order supports distributor planning, while the unit itself ships in a 6-pack configuration for flexible stocking and quicker replacements. As part of the Bussmann CBC family, it remains compatible with existing protection strategies and established maintenance routines, improving overall maintenance ROI. The device is designed for 14 Vdc automotive networks and heavy-duty circuits, enabling consistent protection across a wide range of vehicles and equipment. This design choice helps motor pool managers standardize components, lower training costs, and streamline procurement for large fleets.
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FAQs
BK/CBC-50 uses a #10-32 TPI stud connection for secure mounting, with dimensions of 13.31 in (L) x 9.63 in (H) x 1.94 in (W) and a weight of 0.34 lb. It is rated for 14 Vdc and 50 A, with a 1.5 kAIC interrupt rating. Packaging is 100 units per carton, with 6 units per inner pack. Verify enclosure fit and harness integration against Eaton’s spec sheet before ordering.
The 1.5 kAIC interrupt rating means the breaker can safely interrupt fault currents up to 1.5 kiloamperes, protecting the wiring and connected components from high-energy faults typical in automotive and heavy-duty loads. This reduces arc energy, minimizes insulation damage, and supports longer system life in harsh operating environments.
Certifications and compliance details are listed as 'Contact Manufacturer' or 'Contact Factory' for this model. To confirm CE, IP, SIL or other regulatory approvals for your market, contact Eaton directly or reference the Eaton specification sheet BK/CBC-50 for the latest certification status.
The #10-32 TPI stud connection provides a robust, vibration-resistant mechanical interface that simplifies mounting in rugged automotive enclosures. It enables reliable wiring, reduces the risk of loose connections, and supports quick field replacement, which is valuable for fleet maintenance and service operations.
Using BK/CBC-50 standardizes automotive protection across vehicles and equipment, improving reliability and uptime. The unit’s large-quantity packaging (Packaging quantity 100) aids distributor planning, while the 50 A/14 Vdc rating and 1.5 kAIC interrupt capacity reduce downtime from faults, lower maintenance costs, and simplify procurement within a Bussmann-series protection strategy.