CBC-20 Eaton Automotive Circuit Breaker - 1.5 kAIC
Part Number: CBC-20
Quick Summary
CBC-20 automotive circuit breaker from Eaton protects vehicle electrical systems by interrupting faults quickly and reliably. Engineers often contend with nuisance trips and hard-to-access protection in tight automotive harnesses. Compliance details for CBC-20 are provided by Eaton on request; typical automotive standards consider CE and IP ratings, but factory confirmation is required. This 14 Vdc, 20 A device fits 14 V automotive circuits while delivering predictable protection for critical loads such as ECUs, sensors, and power rails. Its compact Bussmann-series design, combined with a 1.5 kAIC interrupt rating, simplifies installation and reduces maintenance costs in fleets and off-road equipment.
Product Information
Extended Description
CBC-20 Eaton: Eaton Bussmann series CBC automotive circuit breaker, 14 Vdc, 20 A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC automotive circuit breaker
Catalog Number
CBC-20
UPC
051712270991
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
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 - CBC-20
Feature: 14 Vdc operation paired with a 20 A rating keeps automotive power feeds within safe limits, protecting sensitive electronics. This reduces nuisance trips during normal vehicle operation and extends the life of harness insulation. Application: ECU power rails, sensors, lighting circuits, and other critical loads in passenger cars and light commercial equipment. Feature: Interrupt rating of 1.5 kAIC provides fast fault interruption, reducing arc energy and insulation stress in wiring. Business impact: minimizes collateral damage to adjacent circuits and improves overall system reliability. Application: engine bays, battery feeders, and main power rails in automotive harnesses. Feature: #10-32 TPI stud connection delivers a robust, vibration-resistant electrical path. Business impact: ensures consistent contact under automotive vibration and reduces maintenance rework. Application: mounts in fuse blocks, junctions, and protection modules that use standard stud fasteners. Feature: Compact size of 0.55 in depth, 1.27 in height, 1.7 in width and weight of 0.5 lb enables space-saving in crowded enclosures. Business impact: frees enclosure real estate in engine bays and dashboard modules while maintaining electrical reliability. Application: mobile equipment, SUVs, vans, and compact trucks. Feature: General specifications and catalog data (CBC-20) support accurate sourcing; Compliance remains to be confirmed with the factory. Business impact: simplifies BOM and asset management, enabling faster procurement and fewer part-number mismatches. Application: automotive protection plans across Eaton Bussmann-series offerings.
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FAQs
CBC-20 uses a standard #10-32 TPI stud connection, simplifying installation into common automotive fuse blocks and protection modules. Ensure proper torque specifications for the stud and verify clearance in crowded enclosures to minimize vibration-induced loosening.
CBC-20 provides 14 Vdc operation, 20 A continuous current rating, and a 1.5 kAIC interrupt rating. These specs define the load they protect, the permissible fault current, and the fastness of fault interruption for automotive power rails.
CBC-20 is designed for automotive circuits and rugged environments. For marine or off-road applications, verify environmental exposure, vibration, and humidity requirements, and confirm with Eaton for any industry-specific approvals before deployment.
CBC-20 lists Compliances as 'Contact factory', so certification specifics should be obtained directly from Eaton to ensure alignment with your regulatory or supplier requirements before sourcing.
With a compact footprint and robust stud connection, CBC-20 supports durable, low-maintenance protection. Plan for periodic inspection of connection integrity and replace after fault events or at scheduled service intervals to maintain reliable protection across the fleet.