Eaton CBC-25 Automotive Circuit Breaker - Type I 1.5 kAIC
Part Number: CBC-25
Quick Summary
CBC-25 automotive circuit breaker protects DC automotive circuits in vehicles. Engineers often struggle with space constraints and unreliable protection in harsh environments. While this CBC-25 lists Compliances as Contact factory, buyers typically evaluate CE, IP, and SIL considerations to meet regulatory requirements for automotive assemblies. The unit delivers a 14 Vdc rating, 25 A continuous load capability, and a robust 1.5 kAIC interrupt rating, with a 10-32 TPI stud connection that supports reliable harness termination. Its modular design simplifies retrofit and service, helping OEMs and fleet operators minimize downtime. Overall, CBC-25 combines protective performance with installation practicality, supporting compliance-driven procurement and predictable field operation for critical automotive circuits.
Product Information
Extended Description
CBC-25 Eaton: Eaton Bussmann series CBC automotive circuit breaker, 14 Vdc, 25 A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC automotive circuit breaker
Catalog Number
CBC-25
UPC
051712271004
Product Length/Depth
14.75 in
Product Height
7.5 in
Product Width
9.25 in
Product Weight
0.5 lb
Compliances
Contact factory
Amperage Rating
25 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
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Eaton Specification Sheet - CBC-25
Feature: 14 Vdc, 25 A rating aligns with standard automotive battery and electrical load profiles; Business Impact: provides targeted protection without oversizing components, reducing cost and heat in the harness; Application: engine compartments and DC distribution blocks. Feature: 1.5 kAIC interrupt rating delivers high fault current protection; Business Impact: minimizes damage from short circuits and backfeed events; Application: vehicle power rails and critical loads in urban and highway use. Feature: Type I protection behavior supports predictable disconnection under overload conditions; Business Impact: enhances system reliability and reduces risk of cascading failures; Application: fuse-free protection strategy for essential circuits. Feature: 10-32 TPI stud connection enables secure, compatible mounting with standard automotive hardware; Business Impact: simplifies installation and serviceability; Application: common battery terminals and distribution blocks. Feature: compact 0.5 lb form factor and durable construction reduce weight and install footprint; Business Impact: lowers vehicle weight impact and enables flexible placement; Application: compact engine bays and tight electrical enclosures. Feature: Compliances indicate contact factory for regulatory alignment; Business Impact: ensures traceability and certification readiness; Application: OEMs pursuing formal compliance documentation for fleets and service providers.
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FAQs
Yes. The CBC-25 uses a #10-32 TPI stud connection, which is a common automotive termination size, facilitating straightforward mounting in engine compartments, harness blocks, and distribution panels. Verify the stud engagement torque per Eaton recommendations to maintain reliable contact under vibration. If you’re retrofitting, ensure available space and nearby conductive paths are within the recommended clearance to prevent heat buildup.
The CBC-25 is a 14 Vdc device with a 25 A continuous rating and a 1.5 kAIC interrupt capacity. This combination supports DC automotive circuits typical in battery management and chassis systems, offering robust protection against overcurrent events while remaining compatible with standard vehicle electrical architectures.
CBC-25 is well-suited for DC distribution in engine bays, battery blocks, and protected circuits feeding essential components. Its 14 Vdc rating aligns with typical automotive systems, and the 25 A capacity covers common loads without excessive derating. It’s particularly helpful where space is constrained and reliable interruption is needed to prevent collateral damage from faults.
Compliance information for CBC-25 is listed as Compliances: Contact factory. For customers requiring CE, IP, SIL, or other regulatory marks, Eaton can provide documentation and confirmation upon request to ensure alignment with project-specific certification plans and fleet regulatory requirements.
Maintenance focuses on periodic inspection of the stud connections and ensuring clean, secure terminations to minimize resistance and heat. The 0.5 lb weight and compact form factor support easier integration and reduced space impact, contributing to lower installation labor and potential retrofit savings. The reliable 1.5 kAIC interrupt rating helps mitigate high-current fault damage, reducing downtime and warranty exposure in fleet operations.