Eaton CBP-40BA Automotive Circuit Breaker - 1.5 kAIC
Part Number: CBP-40BA
Quick Summary
The CBP-40BA automotive circuit breaker protects automotive electrical circuits at 14 Vdc, delivering 40 A protection. In automotive design, engineers frequently confront nuisance trips, undersized protection, and crowded harnesses that complicate installation. RoHS compliant with Type 1 protection and a 1.5 kAIC interrupt rating provide reliable performance and regulatory assurance. Designed for OEM power rails and aftermarket integrations, it fits compact spaces and simplifies installation while delivering durable, standards-aligned protection that helps reduce downtime and supplier risk.
Product Information
Extended Description
CBP-40BA Eaton: Eaton Bussmann series C.B.P-BA automotive circuit breaker, 14 Vdc, 40A, 1.5 kAIC, Type 1, 10-32 TPI stud
Product Name
Eaton Bussmann series CBP-BA automotive circuit breaker
Catalog Number
CBP-40BA
UPC
051712601566
Product Length/Depth
2 in
Product Height
1.38 in
Product Width
1.3 in
Product Weight
0.4 lb
Compliances
RoHS Compliant Contact factory
Amperage Rating
40 A
Interrupt rating
1.5 kAIC
Trip Type
Automatic
Voltage rating
14 Vdc
Trip Type
Automatic
Connection
#10-32 TPI stud
Bussmann series 4-foot automotive planogram no.10730
Bussmann series full line retail catalog no. 5084
Bussmann series full line retail catalog no. 5084
Bussmann series full line retail catalog no. 5084
Bussmann series Fuseology
Eaton Specification Sheet - CBP-40BA
Feature → Business Impact → Application: The CBP-40BA offers a compact 2 in length with a 1.3 in width and 1.38 in height, enabling easy fitment in tight automotive enclosures and wiring looms; this saves space and reduces housing redesigns during integration. The 14 Vdc, 40 A rating paired with a 1.5 kAIC interrupt capability translates to fast, reliable interruption during short circuits, minimizing collateral wiring damage and protecting critical loads in engine compartments, dashboards, and body harnesses. Type 1 protection and the #10-32 TPI stud connection provide robust mechanical and electrical interface, simplifying installation and long-term reliability in variable automotive environments. RoHS compliance ensures emissions and materials meet modern regulations, supporting compliance programs and supplier qualification while reducing lifecycle risk. Catalog compatibility with Bussmann series references streamlines sourcing, planning, and inventory management for controlled product ecosystems.
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FAQs
CBP-40BA uses a #10-32 TPI stud connection and measures 2 inches in length with 1.38 inches height and 1.3 inches width, enabling compact mounting in engine bays and harness boxes. Its Type 1 enclosure supports standard automotive protection layouts, and RoHS compliance helps ensure regulatory alignment across OEM and aftermarket environments.
The device provides a 40 A amperage rating, 14 Vdc voltage rating, and a 1.5 kAIC interrupt rating with automatic trip. These specs support dependable overcurrent protection for automotive circuits while minimizing nuisance trips and protecting sensitive loads.
Yes. CBP-40BA is part of the Bussmann series automotive protection lineup and is referenced in Bussmann catalogs and planograms. The catalog identifiers, including CBP-40BA, facilitate straightforward sourcing and accurate BOM integration for OEM and retail projects.
Ideal for engine compartment power rails, accessory circuits, and harnessed loads requiring reliable overcurrent protection, the CBP-40BA helps prevent wiring damage during faults and reduces downtime by ensuring predictable, standards-compliant protection in tight spaces.
The device is RoHS compliant, offering materials compliance for modern manufacturing and end-of-life processes. Its compact form factor and robust electrical interface simplify installation and reduce maintenance complexity, contributing to lower total cost of ownership and better supplier qualification.