Eaton CBC-8B Automotive Circuit Breaker - 1.5 kAIC
Part Number: CBC-8B
Quick Summary
CBC-8B automotive circuit breaker protects automotive electrical circuits by interrupting fault currents. This device is designed for robust automotive and equipment applications, helping prevent wiring damage and downtime. Engineers often contend with nuisance trips and undersized protection, which can drive costly outages and maintenance overhead; CBC-8B addresses these challenges with a clear specification set. Key attributes include a 14 Vdc rating, 8 A current rating, and a 1.5 kAIC interrupt capability, paired with Type I trip characteristics for predictable performance. The #10-32 TPI stud connection delivers a reliable mechanical and electrical interface, while the Eaton Bussmann CBC-B family ensures compatibility across automotive protection schemes. This combination supports fast, compliant protection and can reduce total cost of ownership in modern vehicle electrical architectures.
Product Information
Extended Description
CBC-8B Eaton: Eaton Bussmann series CBC-B automotive circuit breaker, 14 Vdc, 8 A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC-B automotive circuit breaker
Catalog Number
CBC-8B
UPC
051712271165
EAN
5027590253857
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
8 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
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Eaton Specification Sheet - CBC-8B
Feature 14 Vdc operating voltage → Business Impact Ensures compatibility with common automotive power systems, reducing the risk of misapplication and nuisance trips. Application Automotive battery circuits and loads in light to medium duty equipment benefit from stable operating voltage and reliable protection. Feature 8 A current rating → Business Impact Protects wiring and accessories from overload, minimizing insulation damage and heat buildup. Application Ideal for automotive accessory circuits, sensors, and control modules where precise current limiting improves reliability. Feature 1.5 kAIC interrupt rating → Business Impact Enables fast, high-energy fault interruption, safeguarding harnesses and components from catastrophic faults. Application Suitable for vehicle power distributions and equipment with higher fault potential. Feature Type I trip → Business Impact Provides predictable, well-characterized protection behavior, reducing surprise trips and enabling precise protection coordination. Application Helpful when coordinating with other protection devices in automotive electrical platforms. Feature #10-32 TPI stud connection → Business Impact Delivers a rugged, vibration-resistant mechanical and electrical interface, easing installation and long-term reliability. Application Preferred for automotive panels and rugged harness connections in high-vibration environments. Feature Dimensions and weight (14.75 in L × 7.5 in H × 9.25 in W; 0.5 lb) → Business Impact Facilitates space planning in crowded enclosures and simplifies handling during installation. Application Fits in standard automotive protection blocks and compatible CBC-B installations. Feature Compliances: Contact factory → Business Impact Ensures you obtain the correct regulatory and safety certifications for your market, preventing last-minute compliance gaps. Application Critical for export and regulated industries where certification alignment is required. Feature CBC-B compatibility → Business Impact Streamlines procurement and spares strategies by aligning with Eaton’s CBC-B family. Application Facilitates replacement, stocking, and integration within existing Eaton Bussmann protection schemes.
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FAQs
CBC-8B is designed as part of the Eaton Bussmann CBC-B automotive protection family and uses a robust #10-32 TPI stud connection for secure mounting. This enables straightforward integration into CBC-B panels and compatible vehicle harnesses while maintaining consistent electrical characteristics across the protection chain. Always verify mounting clearances and torque specifications per the CBC-B installation guide.
CBC-8B provides 14 Vdc operating voltage, 8 A current rating, and a 1.5 kAIC interrupt rating with Type I trip. Use it to protect automotive circuits that run on 14 V systems and require reliable overcurrent protection for loads such as sensors, control modules, and auxiliary circuits where controlled disconnection minimizes collateral damage during faults.
The CBC-8B is engineered for automotive protection duties and employs a rugged connector interface (#10-32 TPI stud). While specific environmental ratings are not listed here, typical deployments emphasize reliability in vibration-prone vehicle applications. For certification specifics and IP or environmental ratings, contact Eaton to confirm your market requirements.
Ensure proper torque on the #10-32 studs per Eaton documentation to maintain a solid electrical and mechanical connection. Provide adequate space for ventilation, observe correct orientation for access, and use compatible mounting hardware within the CBC-B ecosystem. Confirm compliant wiring practices and protect the unit from contaminants to sustain fault-free operation.
CBC-8B helps reduce downtime by delivering predictable protection, lowering nuisance trips in automotive systems. Its durable connection and compatibility with CBC-B spares strategies simplify stocking and maintenance, reducing total cost of ownership while shielding wiring and components from fault-induced damage over the vehicle’s life cycle.