Eaton CBC-20B Automotive Circuit Breaker - 1.5 kAIC Type I
Part Number: CBC-20B
Quick Summary
The Eaton CBC-20B automotive circuit breaker protects 14 Vdc automotive circuits from overloads. This provides reliable protection for vehicle electrical systems while simplifying maintenance in dense wiring environments. For global deployments, typical automotive certifications include CE, UL recognition, and IP ratings depending on market; verify CBC-20B approvals with Eaton. With a compact footprint and a 20 A rating, the CBC-20B combines robust protection with installation efficiency, supporting rugged automotive applications and space-constrained panels alike.
Product Information
Extended Description
CBC-20B Eaton: Eaton Bussmann series CBC-B automotive circuit breaker, 14 Vdc, 20 A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC-B automotive circuit breaker
Catalog Number
CBC-20B
UPC
051712271196
Product Length/Depth
0.84 in
Product Height
1.35 in
Product Width
1.46 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
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Eaton Specification Sheet - CBC-20B
The CBC-20B offers a 14 Vdc, 20 A protected path with a 1.5 kAIC interrupt rating, delivering fast overcurrent protection that reduces wiring damage and downtime in vehicles and mobile equipment. This translates to lower repair costs and higher uptime in critical automotive systems. The #10-32 TPI stud connection simplifies wiring harness integration, enabling quick, secure installations in OEM dashboards, aftermarket builds, or service panels. Its compact footprint—0.84 in deep, 1.35 in high, and 1.46 in wide—fits tight automotive enclosures, fused blocks, and instrument panels without sacrificing protection. The device is designed for common automotive loads and accessories, ensuring reliable protection where space and weight matter. Compatibility with CBC-B family devices helps standardize protection across multiple circuits, reducing inventory complexity for technicians and procurement teams. Industry professionals appreciate the predictable 20 A rating for typical automotive circuits, while the 1.5 kAIC interrupt capacity offers headroom for short, high-current faults, improving overall system resilience.
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FAQs
Installers should disconnect power, locate the circuit section to protect, and terminate wiring to the CBC-20B’s #10-32 TPI stud terminals. Ensure the load matches the 20 A rating and verify secure torque on the connections to prevent vibration-induced loosening in automotive environments. Use the CBC-20B in circuits where space is limited and the 14 Vdc supply is standard.
CBC-20B provides 14 Vdc operation, a 20 A amperage rating, and a 1.5 kAIC interrupt rating. It is suited for automotive circuits and accessories that commonly draw up to 20 A, offering quick protection against overloads while tolerating short, high-current disturbances within the stated interrupt capacity.
Yes. The CBC-20B uses a #10-32 TPI stud connection and has a compact form factor (0.84 in depth, 1.35 in height, 1.46 in width), which aligns with typical fuse boxes and instrument-panel layouts. This makes it a practical drop-in protection solution for compact automotive enclosures and integrated electrical systems.
Compliances are specified as 'Contact factory' for CBC-20B, so confirm current approvals with Eaton for your market. In many regions, automotive protection devices commonly pursue CE, UL recognition, and relevant IP ratings; verify the CBC-20B status and any market-specific certifications with Eaton prior to purchase.
The CBC-20B replaces conventional fuses in many automotive applications, reducing downtime from fuse replacements and potential wiring damage due to overcurrent events. Its 1.5 kAIC interrupt rating provides robust protection for short faults, helping lower repair costs and extend system uptime in critical vehicle electronics.