Eaton FWX-450A High Speed Fuse - UL Recognized

Part Number: FWX-450A
Manufacturer
Eaton
Part number
FWX-450A

Quick Summary

The Eaton FWX-450A high-speed fuse protects industrial power circuits by quickly interrupting fault currents in motor drives and panels. Operators often face nuisance trips and equipment damage from slow-clearing fuses, which can extend downtime and escalate maintenance costs. UL Recognized and CSA Certified, with CE Marking RoHS compliant, these fuses meet global safety standards for automation environments. Designed for blade end x blade end connections with stud mounting, they fit compact control panels and retrofit projects. This combination supports maintenance efficiency, regulatory compliance, and total cost of ownership reductions across industrial ecosystems.

Product Information

Extended Description

FWX-450A Eaton: Eaton Bussmann series FWX high speed fuse, 600V, 450A RMS, 200 kAIC Vac, 50 kAIC at 250 Vdc, Non Indicating, High speed fuse, Blade end X blade end, Stud
Product Name
Eaton Bussmann series FWX high speed fuse
Catalog Number
FWX-450A
UPC
051712150729
EAN
5027590061629
Product Length/Depth
4.3 in
Product Height
1.63 in
Product Width
1.62 in
Product Weight
0.46 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
UL Recognized CSA Certified
Amperage Rating
450A RMS
Interrupt rating
50 kAIC at 250 Vdc 200 kAIC Vac
Voltage rating
600 V
Watt losses
49 W
Packaging type
Standard
Connection
Blade end x blade end
Fuse indicator
Non Indicating
Mounting method
Stud
Feature: 450A RMS amperage rating and a 600 V rating provide fast protection for high-current loads, reducing thermal stress on feeders and motors. Business Impact: Quicker fault clearance minimizes arc damage and unplanned downtime, improving overall equipment availability in critical lines. Application: Ideal for motor drives, feeders, and distribution panels in manufacturing and processing facilities. Feature: Interrupt ratings of 200 kAIC at Vac and 50 kAIC at 250 Vdc ensure reliable fault clearing across AC and DC sections. Business Impact: Enhances system resilience against high-energy faults and supports compliance with demanding electrical protection standards. Application: Power distribution blocks, switchgear, and DC bus protections in automation architectures. Feature: Compact physical footprint and standard dimensions—4.3 in length, 1.62 in width, 1.63 in height—with blade end x blade end connections and stud mounting. Business Impact: Simplifies retrofit and panel modernization, enabling easier installation and space optimization. Application: Control panels, bus bars, and compact equipment enclosures. Feature: Compliance and certifications—UL Recognized, CSA Certified, CE RoHS compliant—backed by reliable documentation and datasheets. Business Impact: Reduces compliance risk and accelerates procurement cycles in regulated sectors. Application: Global manufacturing facilities requiring accredited electrical protection. Feature: Non-indicating design with standard packaging supports straightforward replacement and serviceability. Business Impact: Minimizes diagnostic steps during maintenance and lowers total cost of ownership. Application: Routine field service and OEM assembly in industrial settings.

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FAQs

Install FWX-450A using the blade end x blade end connections with the stud mounting option where space and mounting points permit. Verify the system voltage does not exceed 600 V and confirm the 450 A RMS rating matches your load. Follow standard electrical safety practices, consult the datasheet for torque recommendations, and ensure proper enclosure clearance for safe operation.
FWX-450A provides an interrupt rating of 200 kAIC at Vac and 50 kAIC at 250 Vdc. This makes it suitable for high-energy fault protection in AC power distribution, motor drives, switchgear, and DC bus sections where rapid fault clearance is critical to protect equipment and maintain uptime.
Yes. FWX-450A is UL Recognized and CSA Certified, with CE RoHS compliance. These certifications verify safety, compatibility with North American and international electrical standards, and environmental compliance—facilitating procurement and reducing regulatory risk in global installations.
FWX-450A measures 4.3 inches in length, 1.62 inches in width, and 1.63 inches in height. It uses blade end x blade end connections and supports stud mounting, enabling flexible integration into compact control panels and retrofit projects.
Download the official specifications and data sheets from Eaton: FWX-450A datasheet (asset URL) and Bussmann series catalog no. 1007 for the complete line. Additional data sheets include the FWX 35-2500A family (no. 720005) and related technical bulletins. Access to these documents supports accurate sizing, installation guidance, and compliance verification.