Eaton CBC-30B Automotive Circuit Breaker - Type I, 1.5 kAIC
Part Number: CBC-30B
Quick Summary
The Eaton CBC-30B automotive circuit breaker provides reliable DC protection for automotive electrical systems. It protects critical battery and power-distribution lines from overloads and short circuits, reducing downtime and maintenance hassles in busy vehicle environments. Key trip characteristics include a Type I mechanism and a 1.5 kAIC interrupt rating, with a 14 Vdc operation to suit standard automotive loads. Compliances are to be confirmed with the factory, underscoring the importance of vendor-specific certification when designing for fleets or OEM programs. This CBC-B device integrates with Eaton’s protection portfolio, delivering predictable performance alongside 30 A protection and a rugged #10-32 TPI stud connection, while supporting cost-efficient spares management and quick field servicing.
Product Information
Extended Description
CBC-30B Eaton: Eaton Bussmann series CBC-B automotive circuit breaker, 14 Vdc, 30 A, 1.5 kAIC, Type I, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC-B automotive circuit breaker
Catalog Number
CBC-30B
UPC
051712271219
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
30 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
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Eaton Specification Sheet - CBC-30B
The CBC-30B delivers 14 Vdc, 30 A protection with a 1.5 kAIC interrupt rating, enabling precise control of automotive power circuits and reducing the risk of harness damage. This results in measurable uptime gains and lower warranty costs for fleets and OEMs, especially in high-vibration or harsh environments where dependable protection matters most. The Type I trip characteristic provides a clear and predictable response to overload and fault conditions, improving system reliability and safety in battery lines and power distribution networks. The #10-32 TPI stud connection offers a robust, vibration-resistant interface that simplifies installation and improves parasitic resilience in dense automotive harnesses. By aligning with Eaton Bussmann CBC-B components, you gain streamlined spares and faster maintenance, reducing total cost of ownership. The compact footprint supports easier enclosure integration and retrofit into existing vehicle electrical architectures.
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FAQs
The CBC-30B uses a #10-32 TPI stud connection, enabling a robust, vibration-resistant interface suitable for automotive harnesses. Installation should be performed in a protected automotive enclosure or mounting location, ensuring tight mechanical fit and proper insulation. The unit’s dimensions and weight (approximately 14.75 in L × 9.25 in W × 7.5 in H, ~0.5 lb) support straightforward integration into standard vehicle protection schemes.
The CBC-30B is rated for 14 Vdc, 30 A continuous current, and an interrupt rating of 1.5 kAIC with a Type I trip characteristic. These specs mean the device protects DC automotive circuits at vehicle voltage, handling typical load currents while reliably interrupting fault currents up to 1.5 kAIC, helping prevent wire insulation damage and fire risk.
Compliances for the CBC-30B are listed as 'Contact factory' in the data. For critical regulatory or industry certifications (CE, IP, SIL, etc.), verify with Eaton directly or consult the latest specification sheet to confirm current certifications for your region and application.
Yes. The CBC-30B is part of the Eaton Bussmann CBC-B automotive circuit protection family. Using CBC-B components together ensures consistent electrical characteristics, standardized interfaces, and streamlined spares management across vehicle electrical protection assemblies.
By delivering reliable DC protection with a predictable Type I trip and a high interrupt rating, the CBC-30B minimizes unscheduled downtime, reduces wiring damage from faults, and lowers ongoing maintenance costs. Its robust connection and compatibility with the CBC-B lineup support faster field servicing and easier inventory control for fleets and OEM programs.