Eaton BK/CBC-30HB Automotive Circuit Breaker - 1.5 kAIC
Part Number: BK/CBC-30HB
Quick Summary
The Eaton CBC-HB automotive circuit breaker protects DC power rails in automotive and heavy-duty electrical systems. Tight spaces, vibration, and fluctuating loads can defeat protection if components aren’t rugged and easy to install. This unit offers a 1.5 kAIC interrupt rating and 14 Vdc operation, with compliance details managed directly by the factory. By pairing rugged performance with straightforward compatibility, it helps minimize downtime, reduces field failures, and supports scalable power distribution for fleet and OEM applications. The packaging quantity of 100 and a compact footprint simplify inventory management for maintenance teams and distributors.
Product Information
Extended Description
BK/CBC-30HB Eaton: Eaton Bussmann series CBC-HB automotive circuit breaker, Packaging quantity 100, 14 Vdc, 30 A, 1.5 kAIC, Type I, Heavy duty, 10-32 TPI stud
Product Name
Eaton Bussmann series CBC-HB automotive circuit breaker
Catalog Number
BK/CBC-30HB
UPC
051712595513
Product Length/Depth
0.84 in
Product Height
1.35 in
Product Width
1.46 in
Product Weight
0.5 lb
Compliances
Contact factory
Certifications
Contact Manufacturer
Amperage Rating
30 A
Interrupt rating
1.5 kAIC
Voltage rating
14 Vdc
Connection
#10-32 TPI stud
Quantity
6
Special features
Packaging quantity 100
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Eaton Specification Sheet - BK/CBC-30HB
Feature: The 14 Vdc operating voltage with a 30 A amperage rating delivers targeted protection for DC automotive circuits. Business Impact: This prevents overcurrents from damaging battery management systems and auxiliary loads during start-stop cycles. Application: Ideal for power distribution modules in heavy-duty vehicles and commercial fleets. Feature: The 1.5 kAIC interrupt rating ensures rapid fault clearance. Business Impact: Reduces collateral damage to wiring and protection devices in high-current surge events. Application: Suitable for harnesses exposed to ignition transients and load-dump conditions. Feature: Heavy-duty Type I construction with a #10-32 TPI stud connection. Business Impact: Improves vibration resistance and maintains secure terminals in rough operating environments. Application: Mounts in tight automotive enclosures with reliable line connections. Feature: Packaging quantity of 100 pieces supports efficient supply chain and vehicle assembly workflows. Business Impact: Streamlines stocking, reduces on-site handling, and improves reorder continuity. Application: Used by distributors and OEMs in large fleets and modular electrical systems. Feature: Factory-managed compliance and certification details. Business Impact: Ensures traceability and regulatory alignment while preserving engineering flexibility. Application: When certification needs vary by region, confirm status with Eaton to meet project requirements.
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FAQs
BK/CBC-30HB uses a #10-32 TPI stud for secure electrical connections and fits compact automotive enclosures. When installing, verify clearance for the 0.84 in depth, 1.46 in width, and 1.35 in height footprint, ensure tight, vibration-resistant fastening, and reference Eaton's specification sheet for any torque or harness guidance to maximize reliability in start-stop and harsh-duty cycles.
The breaker operates at 14 Vdc with a 30 A load rating and provides a 1.5 kAIC interrupt rating. These specs support DC power distribution in automotive and heavy-duty applications by tolerating battery transients, protecting critical loads, and enabling rapid fault clearance to minimize collateral damage in fault events.
Yes, BK/CBC-30HB is part of the Eaton Bussmann CBC family and uses a common #10-32 TPI stud connection design. Its rugged Type I construction and standard form factor facilitate integration into existing CBC-based harnesses and distribution modules, while maintaining consistent protection performance across a fleet or OEM platform.
Compliances are listed as factory-managed, with Certifications noted as Manufacturer-managed. For region-specific requirements (CE, SIL, IP, etc.), contact Eaton to confirm available certifications and obtain documented compliance evidence. This approach helps ensure alignment with project specifications while allowing for regional variations in regulatory standards.
Replacing fuses with a solid-state-type circuit breaker like BK/CBC-30HB reduces fuse maintenance and service interruptions. The 30 A rating and 14 Vdc operation support reliable protection, while the 1.5 kAIC rating helps prevent cascading failures. With 100-piece packaging and straightforward installation, fleets improve uptime, simplify inventory, and lower total cost of ownership over the device life cycle.