Eaton BK/CB211-20 Automotive Circuit Breaker - 150AIC
Part Number: BK/CB211-20
Quick Summary
Eaton BK/CB211-20 automotive circuit breaker protects automotive circuits in rugged electrical systems. Engineers often struggle with space constraints in control panels and the risk of nuisance trips in harsh vehicle environments. Certifications such as CE, IP ratings, and SIL play a key role; verify the exact credentials with Eaton to align with your regulatory and safety requirements. Designed for the Bussmann series automotive protection family, this compact, Type I ATM footprint device delivers reliable protection without sacrificing panel density. By choosing a known OEM with documented specifications, your maintenance teams gain predictable performance, easier sourcing, and faster system integration. This translates to reduced downtime and lower total cost of ownership for OEMs and service providers.
Product Information
Extended Description
BK/CB211-20 Eaton: Eaton Bussmann series CB211 automotive circuit breaker, Packaging quantity 100, 14 Vdc, 20 A, 150 AIC, Type I ATM footprint
Product Name
Eaton Bussmann series CB211 automotive circuit breaker
Catalog Number
BK/CB211-20
UPC
051712846769
Product Length/Depth
0.49 in
Product Height
0.25 in
Product Width
1.42 in
Product Weight
0.1 lb
Compliances
Contact factory
Amperage Rating
20 A
Interrupt rating
150 AIC
Voltage rating
14 Vdc
Quantity
6
Special features
Packaging quantity 100
Bussmann series 4-foot automotive planogram no.10730
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - BK/CB211-20
Feature → Business Impact → Application: The BK/CB211-20 uses a compact Type I ATM footprint that enables dense panel layouts, improving packaging efficiency and reducing the need for custom enclosures in automotive control boxes. This translates to faster installation, easier field servicing, and lower labor costs during panel updates. Application: ideal for space-constrained automotive protection blocks where reliable interconnects and quick replacement are essential. Feature → Business Impact → Application: Rated for 14 Vdc and 20 A with a 150 AIC interrupt rating, providing robust protection against short circuits while minimizing nuisance tripping. Application: suitable for battery management, sensors, and control modules in 12–14 V automotive systems. Feature → Business Impact → Application: Packaging quantity of 100 supports streamlined stocking for distributors and OEMs, reducing order turnaround and inventory carrying costs. Application: improves supply chain resilience for low-volume, high-mix automotive assemblies. Feature → Business Impact → Application: Physical footprint (0.49 in L × 0.25 in H × 1.42 in W) and a weight of 0.1 lb enable compact, lightweight protection in dense harnesses and compact control panels. Application: enhances module density in automotive fuse blocks and space-limited enclosures. Feature → Business Impact → Application: Compliances state “Contact factory,” prompting verification via Eaton’s specifications to ensure regulatory alignment. Application: essential when customer-specific certifications or regional approvals are required for aerospace, military, or on-vehicle networks.
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FAQs
BK/CB211-20 is designed to fit Type I ATM footprint modules commonly used in automotive protection blocks. Its compact dimensions (0.49 in L Ă— 0.25 in H Ă— 1.42 in W) and light 0.1 lb weight enable easy mounting in space-constrained fuse blocks and control boxes, reducing panel depth and enabling cleaner layouts for OEM assemblies.
The device operates at 14 Vdc with a 20 A continuous rating and provides an interrupt rating of 150 AIC, ensuring rapid fault interruption for automotive circuits while minimizing wiring damage and heat buildup. These specs support reliable protection for battery management, sensors, and control modules in low-voltage automotive systems.
Yes, the breaker’s compact form factor and high interrupt rating are ideal for harsh vehicle environments where space is at a premium. The Type I ATM footprint allows deployment in dense harnesses and compact control panels, facilitating easier maintenance and faster replacement in OEM assemblies and service fleets.
Official resources include the Eaton specification sheet for BK/CB211-20, Bussmann catalogs, and automotive planograms. You can also access brochures and the Bussmann full-line catalog to verify compatibility with your part numbers and installation practices, ensuring correct mounting, wiring, and compliance checks.
Adopting BK/CB211-20 delivers higher uptime through reliable overcurrent protection, reduces panel/manageability costs due to its compact footprint, and improves sourcing efficiency with packaging quantities of 100 and standard cataloging in the Bussmann line. This translates to faster field servicing, lower inventory complexity, and overall lower total cost of ownership.