Eaton NOS-45 fuse - Class K5, 50 kAIC at 600 Vac
Part Number: NOS-45
Quick Summary
The Eaton NOS-45 fuse is a general-purpose protection device designed for electrical control panels and industrial machinery. When downtime and nuisance trips threaten production, fast, predictable fuse replacement becomes a key reliability lever. The part is CE marked and compatible with Bussmann Class K5 and H fuse families, aligning with EU safety requirements. Together with a 45 A rating and 50 kAIC interrupt capability, it delivers robust protection while enabling efficient maintenance. In practice, engineers leverage its ferrule-end connections, pin-indicating feature, and standard packaging to simplify stocking and installation. Its compact 5.5 in length with 1.6 in width and height fits many cabinet configurations, reducing space and wiring complexity.
Product Information
Extended Description
NOS-45 Eaton: Eaton Bussmann Series Class K5 fuse, NOS, general purpose, non-current-limiting fuses, 45 A, one-time fuse, interrupting rating of 50 kA at 600 Vac
Product Name
Eaton Bussmann series NOS fuse
Catalog Number
NOS-45
UPC
051712310451
EAN
5027590173995
Product Length/Depth
5.5 in
Product Height
1.6 in
Product Width
1.6 in
Product Weight
0.355 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
45 A
Interrupt rating
50 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class K5 Class H
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Quantity
10
Special features
Pin-indicating
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Class H (K) Fuses Data Sheet no. 1030
Feature → Business Impact → Application The NOS-45 provides 45 A continuous protection with a 50 kAIC interrupt rating at 600 Vac, delivering reliable short-circuit protection and reduced risk of cascading outages in machinery and control panels. This translates to improved equipment uptime and safer shutdown sequences during faults in industrial environments. Application: use in general protection for electrical panels and branch circuits where non-current-limiting fuses are appropriate. Feature → Business Impact → Application Pin-indicating feature supports quick fault identification during maintenance, reducing diagnostic time and downtime in production lines; application in automation panels where rapid service is critical. Feature → Business Impact → Application Ferrule-end x ferrule-end connections simplify terminal block installations, enabling faster retrofit or expansion projects in existing enclosures. Feature → Business Impact → Application CE marking ensures EU compliance, enabling cross-border procurement and reducing certification steps for new installations. Feature → Business Impact → Application Standard packaging (Quantity 10) improves warehouse efficiency and reduces stocking costs for maintenance teams; application in preventative maintenance and stock control for multiple panels.
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FAQs
NOS-45 uses ferrule-end terminations and is designed for standard control-panel mounting. It measures 5.5 in long, 1.6 in wide, and 1.6 in high, with a 45 A rating and 50 kAIC interrupt rating at 600 Vac. The ferrule-end x ferrule-end connection simplifies terminal blocks and busbar layouts, making retrofit and new installations straightforward.
Key specifications include a 45 A continuous rating, a 50 kAIC interrupt rating at 600 Vac, and a 600 V voltage rating. It is a non-current-limiting fuse belonging to the Class K5 family within the Bussmann lineup, offering dependable short-circuit protection while facilitating straightforward selectivity and safe interruption in standard electrical systems.
Yes. NOS-45 is designed for general-purpose, non-current-limiting protection in control panels and machinery. It provides reliable branch-circuit protection with a rugged 50 kAIC interrupt rating at 600 Vac, CE marking for EU compliance, and a compact ferrule-end form factor that supports easy retrofit across a wide range of enclosure types, helping minimize installation time.
NOS-45 is CE marked to meet EU safety requirements and is part of Eaton’s Bussmann Class K5/H fuse families, ensuring compatibility with a broad range of protection schemes. While the data focuses on CE compliance, the fuse adheres to Bussmann’s documented performance standards for general electrical protection in industrial environments.
The NOS-45 reduces maintenance downtime through fast replacement and predictable performance. The 10-unit packaging improves stocking and logistics, while the pin-indicating feature aids quick fault identification. The standard ferrule-end design simplifies installation, lowers labor costs, and enables consistent protection across multiple panels without extensive wiring changes.