Eaton BK/SC-45 Fuse - 100 kAIC Class G Rejection style

Part Number: BK/SC-45
Manufacturer
Eaton
Part number
BK/SC-45

Quick Summary

Eaton Bussmann SC fuse provides current-limiting protection for industrial panelboards and HV branch circuits. This design helps prevent nuisance trips and downstream equipment damage during faults, reducing downtime and maintenance costs. RoHS compliant and part of the Bussmann Class G family, it features a non-indicating fuse with a rejection style for safe, precise replacements. Bulk packaging simplifies procurement for distributors and maintenance teams, while providing consistent performance across controls and automation applications.

Product Information

Extended Description

BK/SC-45 Eaton: Eaton Bussmann series SC fuse, Current-limiting time-delay fuse, Rejection style, Fusible branch panelboards, HV branch circuit protection, 45 A, G, Non-indicating, 12 sec at 200%, 100 kAIC at 480 V, 10 kAIC at 300 Vdc, Bulk, 480 V, 300 Vdc
Product Name
Eaton Bussmann series SC fuse
Catalog Number
BK/SC-45
UPC
051712135696
Product Length/Depth
2.25 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.35 lb
Warranty
Not Applicable
Compliances
Not Applicable RoHS Compliant
Catalog Notes
Bulk
Amperage Rating
45 A
Interrupt rating
10 kAIC at 300 Vdc 100 kAIC at 480 Vac
Response time
12 sec at 200%
Voltage rating
480 Vac, 300 Vdc
Packaging type
Standard Bulk
Class
Class G
Fuse indicator
Non-indicating
Special features
Rejection style
Feature to benefit mapping drives business outcomes in real-world installations. The 45 A current rating paired with current-limiting time-delay protection reduces fault energy and downstream equipment stress, improving system reliability in motor drives and feeders. In practice, this means fewer disruptive trips and faster restoration after faults, essential for manufacturing lines and critical process controls. The high interrupt ratings — 100 kAIC at 480 Vac and 10 kAIC at 300 Vdc — deliver robust protection in high-energy environments, ensuring safety and compliance in large panelboards and HV branches. Rejection style and Class G construction simplify installation and maintenance, enabling safe, quick changes during routine servicing and minimizing the risk of incorrect fuse seating. Bulk packaging and bulk catalog notes streamline procurement for distributors, OEMs, and service teams, supporting lean inventory and faster project deployment. The compact 2.25 in length and 0.41 in width/height profile fits standard fusible panelboard spaces, improving compatibility with existing enclosures and bus assemblies without requiring cabinet redesign. Overall, the BK/SC-45 aligns with industrial protection standards while delivering measurable efficiency gains and reduced operating costs through superior protection and ease of replacement.

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FAQs

BK/SC-45 is designed for fusible panelboards and HV branch circuits using Bussmann Class G fuses. Its 2.25 in length and bulk packaging ensure compatibility with standard enclosure footprints and stock configurations. It supports non-indicating, rejection-style installation and aligns with common Bussmann SC fuse applications in industrial controls.
BK/SC-45 provides 45 A nominal current rating with an interrupt capacity of 100 kAIC at 480 Vac and 10 kAIC at 300 Vdc. It offers a 12-second response time at 200% overload, delivering fast fault clearing while tolerating inrush. These specs support safe operation in high-energy equipment and motor loads.
Yes, BK/SC-45 is RoHS compliant and sold in bulk packaging. This arrangement is ideal for distributors, OEMs, and service teams that require cost-effective stock and straightforward replacement in assemblies and large installations.
The rejection style design prevents improper fuse seating, reducing the risk of installation errors. This feature, combined with the Class G classification and non-indicating indicator, simplifies maintenance by ensuring only compatible SC fuses are used, speeding up replacements and improving safety in panel operations.
Plan for periodic inspection of panelboard protection and quick replacement using bulk BK/SC-45 fuses. The 12-second response and high interrupt ratings support predictable fault response, while the bulk packaging minimizes downtime during scheduled maintenance and outages. Ensure stock aligns with expected load profiles and inrush characteristics in your automation systems.