Eaton BK/CB221-15 Automotive Circuit Breaker - ATC Type I
Part Number: BK/CB221-15
Quick Summary
The Eaton BK/CB221-15 automotive circuit breaker protects electrical circuits in automotive and off-road systems. Designers often contend with tight spaces and vibration, requiring compact protection that won’t fail when it matters most. Compliances are listed as contact factory, so verify latest approvals such as automotive CE/UL standards before deployment. This part’s Type I ATC footprint and 14 Vdc, 15 A ratings support reliable protection with minimal install footprint. By choosing a rugged, automotive-grade breaker, procurement gains predictable lead times and reduced field service calls. The BK/CB221-15 offers a compact 1.3 inch length and ATC footprint, easing harness routing and replacement. With an interrupt rating of 150 AIC and 14 Vdc operation, it clears faults quickly to protect critical loads.
Product Information
Extended Description
BK/CB221-15 Eaton: Eaton Bussmann series CB221 automotive circuit breaker, Packaging quantity 100, 14 Vdc, 15 A, 150 AIC, Type I ATC footprint
Product Name
Eaton Bussmann series CB221 automotive circuit breaker
Catalog Number
BK/CB221-15
UPC
051712846813
Product Length/Depth
1.3 in
Product Height
0.76 in
Product Width
0.22 in
Product Weight
0.2 lb
Compliances
Contact factory
Amperage Rating
15 A
Interrupt rating
150 AIC
Voltage rating
14 Vdc
Quantity
6
Special features
Packaging quantity 100
Bussmann series 4-foot automotive planogram no.10730
BK/CB221-15~BK-CB221-15~ATC-CB TYPE I
BK/CB221-15~BK-CB221-15~ATC-CB TYPE I
Bussmann series Fuseology
Eaton Specification Sheet - BK/CB221-15
Feature: Compact ATC Type I footprint. Business Impact: Enables installation in tight automotive harnesses and reduces mounting hardware, lowering overall system cost. Application: fits standard ATC fuse holders across passenger cars, trucks, motorcycles, and light off-road equipment. Feature: Electrical ratings of 14 Vdc, 15 A, 150 AIC. Business Impact: Provides robust overcurrent protection with fast fault clearing, reducing wire insulation stress and component damage. Application: protects essential loads such as lighting, accessories, and control circuits in 12–14 V vehicle systems. Feature: Packaging quantity of 100. Business Impact: Improves stocking efficiency, simplifies procurement planning, and minimizes downtime in service fleets. Application: ideal for distributors, repair shops, and OEMs maintaining spares. Feature: Compact dimensions (1.3 in L × 0.76 in H × 0.22 in W) and weight (0.2 lb). Business Impact: Eases harness routing, reduces weight, and simplifies retrofit or expansion projects. Application: supports space-constrained engine bays and compact fuse boards. Feature: ATC Type I footprint compatibility. Business Impact: Streamlines replacement using common automotive fuse holders and Bussmann series solutions. Application: standardizes installation across multi-vehicle architectures. Feature: Compliance note. Business Impact: Encourages factory verification for CE/UL automotive standards, improving supply chain confidence. Application: essential for regulated automotive programs and critical-load protection.
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FAQs
BK/CB221-15 uses an ATC Type I footprint, enabling straightforward drop-in installation in common automotive fuse holders and harness assemblies. Its compact 1.3 in length and 0.22 in width decrease harness clutter, simplify routing, and speed field replacements without custom mounting hardware.
The breaker operates at 14 Vdc with a 15 A rating and a 150 AIC interrupt rating. In fault conditions, it opens quickly to protect wiring insulation and connected loads, making it suitable for automotive circuits that power lighting, sensors, and auxiliary systems.
Compliances are listed as contact factory; verify latest approvals with Eaton before deployment. Automotive programs typically require CE/UL or equivalent certifications, so confirm current certifications for your region and application prior to procurement.
ATC Type I footprint standardizes mounting and harness integration, allowing quick swaps and cross-compatibility with existing Bussmann-series automotive components. This reduces part variety in fleets and simplifies technician training during maintenance.
With a 150 AIC interrupt rating and rugged automotive design, the breaker minimizes fault duration and protects critical loads. Packaging in quantities of 100 and a compact footprint lower stocking costs and downtime, yielding a favorable total cost of ownership over vehicle fleets.