Eaton NOS-70 Fuse - Class K5, 70A, 10 kAIC at 600V
Part Number: NOS-70
Quick Summary
Eaton NOS-70 fuse provides general-purpose circuit protection for industrial control panels. Selecting the right fuse can be challenging when balancing startup inrush, downtime, and safe interruption. The NOS-70 is CE marked and part of the Eaton Bussmann Series Class H/K5 family, supporting European compliance and standardization for a broad range of panel builds. With a 70 A rating and a 10 kAIC interrupt rating at 600 V, it pairs reliability with straightforward installation in blade-end fuse blocks. This combination helps manufacturers improve uptime, reduce spare parts inventory, and ensure compliance while staying aligned with industry terminology like Bussmann fuse family and Class K5 devices.
Product Information
Extended Description
NOS-70 Eaton: Eaton Bussmann Series Class K5 fuse, NOS, general purpose, non-current-limiting fuses, 70 A, one-time fuse, interrupting rating of 10 kA at 600 Vac
Product Name
Eaton Bussmann series NOS fuse
Catalog Number
NOS-70
UPC
051712310703
Product Length/Depth
7.9 in
Product Height
1.34 in
Product Width
1.34 in
Product Weight
0.55 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
70 A
Interrupt rating
10 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class H Class K5
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Quantity
5
Special features
Non current limiting
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Class H (K) Fuses Data Sheet no. 1030
70 A rating provides robust protection for standard industrial load profiles, while a 10 kAIC interrupt rating at 600 Vac minimizes arcing and promotes safe disconnection under fault conditions. In practice, this enables reliable protection for motor drives, control circuits, and power distribution blocks, contributing to higher equipment uptime and safer plant operation. The non-current-limiting design reduces nuisance trips in typical non-fault inrush scenarios, simplifying coordination with upstream protections and improving overall line efficiency in standard panel applications. Class H/K5 designation supports compatibility with common Bussmann blade-end fuse blocks, enabling straightforward replacement, quick BOM updates, and reduced maintenance stock. Compact blade-end connections, a 7.9 inch length and 1.34 inch square cross-section, ensure easy installation in tight control panels and modular enclosures. Packaging of five fuses per carton streamlines procurement and inventory management for maintenance teams. Documentation and catalogs from Eaton Bussmann provide clear references for spec validation and compliance checks, supporting engineering decisions and audit readiness.
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FAQs
The NOS-70 uses blade-end x blade-end connections designed for standard Bussmann class H/K5 holders. To install, align the fuse ends with the blade contacts, push firmly until seated, and verify full engagement to ensure proper electrical contact. This straightforward installation supports quick maintenance and minimizes downtime during panel servicing, while compatibility with common holders reduces stocking complexity.
The NOS-70 is rated for 70 A with a voltage rating of 600 V and an interrupt rating of 10 kAIC at 600 Vac. These specifications translate to robust fault-current interruption and safe disconnection for typical industrial control circuits, reducing the risk of arcing and damage to downstream equipment in standard panel configurations.
Yes. The NOS-70 is designed as a general-purpose, non-current-limiting fuse suitable for standard loads in control panels, motor drives, and power distribution blocks. Its 70 A rating and 10 kAIC interrupt capability provide reliable protection without aggressively limiting inrush, making it ideal for many mainstream automation applications when coordinated with upstream protection.
The NOS-70 carries CE marking, indicating compliance for European installations. For additional product data and compliance verification, consult Eaton Bussmann catalogs and the RoHS tools available through Eaton to confirm material and regulatory conformance relevant to your BOM and end-market requirements.
With five fuses per carton and straightforward blade-end installation, the NOS-70 reduces stocking complexity and maintenance time. Its robust 10 kAIC interrupt rating minimizes downtime from faults, while non-current-limiting behavior lowers nuisance trips in typical loads, contributing to improved line availability, predictable maintenance planning, and lower total cost of ownership for automation systems.