Eaton NOS-350 Fuse - Class K5, 10 kAIC at 600V
Part Number: NOS-350
Quick Summary
The Eaton NOS-350 fuse is a general-purpose Bussmann series protection device designed for industrial power distribution and control circuits. It addresses the common pain point of finding a reliable, single-use protection solution that balances protection with ease of replacement in demanding automation environments. This Class K5, non-current-limiting fuse carries CE marking and supports standard industrial safety expectations, helping teams meet regulatory and procurement standards. With the NOS-350, engineers can simplify specification, sourcing, and maintenance while reinforcing panel protection and uptime in critical applications.
Product Information
Extended Description
NOS-350 Eaton: Eaton Bussmann Series Class K5 fuse, NOS, general purpose, non-current-limiting fuses, 350 A, one-time fuse, interrupting rating of 10 kA at 600 Vac
Product Name
Eaton Bussmann series NOS fuse
Catalog Number
NOS-350
UPC
051712313506
Product Length/Depth
11.63 in
Product Height
2.59 in
Product Width
2.59 in
Product Weight
2.82 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
350 A
Interrupt rating
10 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class H Class K5
Fuse indicator
Non-indicating
Quantity
1
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: General-purpose protection rated for 350 A with a 10 kAIC interrupt rating at 600 Vac. Business Impact: Delivers dependable fault clearance to minimize equipment damage and unplanned downtime in power distribution and motor control circuits. Application: Ideal for general protection in industrial panels and control cabinets. Feature: Non-current-limiting Class K5 design paired with a one-time fuse format. Business Impact: Reduces arc energy exposure and maintenance complexity by using a single-use solution that remains predictable under fault conditions. Application: Suitable for enclosed switchgear and panelboards where fast clearing is not required. Feature: Pin-indicating capability listed as a special feature. Business Impact: Enhances on-site diagnostics and quick status checks during preventive maintenance or swap-outs. Application: Facilitates panel servicing in high-availability facilities. Feature: CE Mark compliance and standard packaging (1 unit). Business Impact: Ensures regulatory alignment across markets and straightforward stocking and replacement. Application: Streamlines procurement for distributors and end-users needing consistent supply. Feature: Compact footprint with explicit dimensions and weight (11.63 in length, 2.59 in width, 2.82 lb). Business Impact: Simplifies enclosure planning and rack-mount or rail-based installations. Application: Fits common Bussmann fuse blocks and standard panel layouts in automation environments.
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FAQs
NOS-350 is designed for standard Bussmann fuse blocks used in industrial power panels. It measures 11.63 in long with a 2.59 in width and weighs about 2.82 lb, fitting typical Class H/Class K5 mounting schemes. Use proper mounting hardware, verify the 350 A rating, and ensure the system voltage is within 600 V. Since it is a one-time fuse, replace after a trip to restore protection and avoid reusing a spent device.
The NOS-350 provides a 350 A amperage rating with a 10 kAIC interrupt rating at 600 Vac, and a voltage rating of 600 V. It is classified as a non-current-limiting, one-time fuse with Class K5 characteristics. These specs support general protection in power distribution and control circuits while maintaining a clear fault path for safe shutdown.
Yes, as a general-purpose Bussmann series NOS fuse, the NOS-350 is well-suited for motor control centers and automation panels requiring robust protection against overcurrent events. Its non-current-limiting behavior means it does not rapidly truncate inrush beyond its continuous rating, so confirm inrush profiles and coordination with upstream protection to optimize selectivity and uptime.
The NOS-350 is CE marked, meeting essential European safety and compliance requirements. For broader regulatory verification, use Eaton’s RoHS tools and datasheets to cross-check material compliance for your region. Always reference the latest catalog and data sheet from Eaton Bussmann to confirm certifications before deployment in regulated environments.
As a one-time fuse, the NOS-350 reduces maintenance complexity by eliminating re-fusing after a fault. Its predictable interrupt rating and standard catalog availability support faster field replacements and inventory planning. While downtime occurs to replace a spent fuse, the overall reliability and simplified stocking typically yield lower total cost of ownership in high-availability facilities.