Eaton CBP-50BA Automotive Circuit Breaker - 1.5 kAIC
Part Number: CBP-50BA
Quick Summary
The Eaton CBP-50BA automotive circuit breaker provides reliable overcurrent protection for 14 V automotive electrical systems. Engineers often struggle with protecting wiring without nuisance trips in harsh vehicle environments, and this design addresses that challenge with robust fault energy control. This unit carries RoHS compliance and a Type I protection profile, with a 1.5 kAIC interrupt rating to cap fault energy and protect wiring harnesses. Its compact form factor—2 in length with a #10-32 TPI stud—simplifies installation and maintenance in crowded engine compartments. Designed to integrate with the Eaton Bussmann series, the CBP-50BA supports consistent performance across fleets while helping reduce total cost of ownership through reliable protection and easy sourcing.
Product Information
Extended Description
CBP-50BA Eaton: Eaton Bussmann series C.B.P-BA automotive circuit breaker, 14 Vdc, 50A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBP-BA automotive circuit breaker
Catalog Number
CBP-50BA
UPC
051712617581
Product Length/Depth
2 in
Product Height
1.38 in
Product Width
1.3 in
Product Weight
0.4 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
50 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
Quantity
35
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Eaton Specification Sheet - CBP-50BA
Feature 14 Vdc rating, 50 A, 1.5 kAIC interrupt rating → Business Impact Delivers precise overcurrent protection and fast fault interruption in 14 V automotive circuits, reducing wire insulation damage and fire risk in critical power rails. Application Automotive power distribution and accessory lines benefit from dependable protection in trucks, vans, and passenger vehicles. The CBP-50BA is a core component in automotive protection strategies that aim to minimize downtime and warranty costs. Feature Type I protection profile, 14 Vdc operation → Business Impact Improves system resilience by using the Type I fault response to limit sustained fault energy, enabling safer vehicle operation under fault conditions. Application Suitable for automotive systems where quick, clean isolation of faults is required to protect sensitive electronics and wiring bundles. Feature 1.5 kAIC interrupt rating → Business Impact Strong fault-current interruption capability reduces conductor heating and downstream damage, supporting longer cable life and improved reliability in high-current events. Application Ideal for battery feeds and main power trunks in 12–14 V architectures. Feature #10-32 TPI stud terminals → Business Impact Fast, secure mechanical and electrical connections simplify installation and reduce torque-related issues. Application Use in rugged automotive environments where stud connections are preferred for reliability and serviceability. Feature Dimensions 2 in L, 1.3 in W, 1.38 in H and 0.4 lb weight → Business Impact Small footprint fits tight enclosures and dense harness routing, enabling scalable protection across vehicle platforms. Application Beneficial for compact fuse blocks and sealed battery compartments. Feature RoHS Compliant → Business Impact Supports regulatory compliance and lower environmental risk, aligning with modern procurement standards. Application Essential for electronics manufacturing and automotive component sourcing where green compliance is required. Feature Part of Eaton Bussmann series ecosystem → Business Impact Streamlines sourcing, simplifies BOMs, and ensures compatibility with existing planograms and distributors. Application Enhances supply chain continuity for service centers and repair facilities.
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FAQs
CBP-50BA installs with a #10-32 TPI stud and a 2 inch body length. Ensure clean terminals, torque to manufacturer recommendations, and secure mounting to minimize vibration. Consult Eaton datasheets for proper cradle or panel fitment and to verify compatibility with Bussmann series hardware.
The unit is rated for 14 Vdc operation, 50 A continuous current, and a 1.5 kAIC interrupt rating. These specs define its suitability for protecting vehicle power distribution and accessory circuits against short circuits and overloads.
Yes, the CBP-50BA is RoHS compliant. For additional certifications or approvals beyond RoHS, contact Eaton to confirm any region-specific requirements or CE-related endorsements applicable to your program.
Best suited for automotive power distribution, battery feeds, and accessory circuits in 12–14 V architectures. Its compact form and high interrupt rating make it ideal for tight engine compartments and dense harness layouts.
By delivering reliable fault interruption (1.5 kAIC) and a robust, RoHS-compliant design, the CBP-50BA reduces unexpected outages and warranty repairs. Its compatibility with the Bussmann series simplifies stocking and service workflows, shortening downtime and improving fleet uptime.