Eaton BK/SC-40 SC Fuse - 100 kAIC at 480 Vac Class G
Part Number: BK/SC-40
Quick Summary
The Eaton Bussmann SC fuse BK/SC-40 is a current-limiting, time-delay protective device used to safeguard industrial circuits and panel boards. In fast-moving production environments, nuisance trips from inrush or motor start-up can halt lines and inflate maintenance costs. RoHS compliant and built to a Class G performance standard, this fuse supports reliable protection in 480 Vac distributions while maintaining safe energy limits. Designed for bulk procurement and ease of installation, it fits ferrule-end terminations and integrates with the Eaton Bussmann series for scalable protection strategies. Adopting this solution helps maintenance teams extend equipment life, minimize downtime, and simplify compliance reporting.
Product Information
Extended Description
BK/SC-40 Eaton: Eaton Bussmann series SC fuse, Current-limiting time-delay fuse, Rejection style, 40 A, Class G, Non-indicating, Ferrule end x ferrule end, 12 sec at 200%, 100 kAIC at 480 Vac, 10 kAIC at 300 Vdc, Bulk, 480 V, 300 Vdc
Product Name
Eaton Bussmann series SC fuse
Catalog Number
BK/SC-40
UPC
051712750639
EAN
5027590454940
Product Length/Depth
0.41 in
Product Height
2.25 in
Product Width
0.41 in
Product Weight
0.35 lb
Warranty
Not Applicable
Compliances
Not Applicable RoHS Compliant
Catalog Notes
Bulk
Amperage Rating
40 A
Interrupt rating
100 kAIC at 480 Vac 10 kAIC at 300 Vdc
Response time
12 sec at 200%
Voltage rating
480 Vac, 300 Vdc
Packaging type
Standard Bulk
Class
Class G
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Rejection style
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - BK/SC-40
Feature: 40 A current-limiting time-delay design. Business Impact: Provides fast fault clearance while tolerating motor inrush, reducing arc energy and downtime. Application: Ideal for motor control centers, drives, and PLC-powered panels in manufacturing environments. Feature: Rejection style with ferrule end x ferrule end. Business Impact: Enhances wiring reliability and prevents mis-wiring, lowering field rework and service calls. Application: Standardized panel assemblies and equipment racks. Feature: 100 kAIC interrupt rating at 480 Vac (and 10 kAIC at 300 Vdc). Business Impact: Carries high-energy fault currents safely, protecting feeders and switchgear. Application: Industrial power distribution and large MCCs. Feature: 12 sec at 200% rating; Class G; Non-indicating; Bulk packaging. Business Impact: Predictable protection with straightforward labeling and economical stocking. Application: Bulk procurement for OEMs and service fleets. Feature: RoHS compliant; compact ferrule-end design; 0.41 in x 0.41 in x 2.25 in footprint; weight 0.35 lb. Business Impact: Easy retrofits and space-saving installs in crowded panels; supports sustainable compliance. Application: Global manufacturing sites and retrofits in existing control panels.
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FAQs
BK/SC-40 is a 40 A current-limiting, time-delay fuse with ferrule-end terminations designed for Eaton Bussmann SC assemblies. It fits standard panel enclosures and motor control panels that support ferrule-end connections and Class G protection. In practice, ensure your enclosure width accommodates the 0.41 in cross-section and that upstream protection aligns with the 480 Vac operating environment. This makes it suitable for MCCs, drives, and PLC panels seeking reliable short-circuit protection with ease of wiring.
The 100 kAIC interrupt rating at 480 Vac means the BK/SC-40 can safely interrupt very high fault currents without de-rating in typical industrial power distributions. This capability reduces the risk of collateral damage to upstream devices and minimizes arc energy during faults. Combined with a 12-second response at 200% rating, it supports coordinated protection in feeders, MCCs, and large control panels against high-energy faults.
Yes. The BK/SC-40 is well-suited for motor control centers and motor-drive applications due to its 40 A rating, current-limiting behavior, and time-delay characteristics that accommodate motor start-up currents. Its ferrule-end connections simplify panel wiring, while the Class G construction provides predictable protection with robust interrupt capacity for common MCC feeders and fault paths.
The BK/SC-40 is RoHS compliant, aligning with restrictions on hazardous substances. It is designed as a Class G current-limiting fuse with a rejection-style feature and ferrule-end connections. Specific CE, UL, or other regulatory listings are typically referenced in Eaton’s official datasheets or catalogs; for exact listings, consult the Eaton specification sheet and the Bussmann series catalog to verify current regulatory certifications for your region and application.
Bulk packaging supports cost-effective procurement for OEMs and maintenance teams, reducing per-unit handling and freight costs. The non-indicating design lowers panel clutter, while the high interrupt rating and current-limiting action reduce downtime and component damage during faults. Together, these factors translate to lower maintenance costs, fewer field visits, and improved uptime in capital-intensive manufacturing environments.