Eaton FWX-90A High Speed Fuse - 200 kAIC Vac
Part Number: FWX-90A
Quick Summary
The Eaton FWX-90A high speed fuse provides fast-acting overcurrent protection for industrial controls and motor drives. Engineers often face nuisance trips and inadequate protection in compact panels and high-speed power circuits. It carries CE Marked and RoHS compliance, plus UL Recognized and CSA Certified status for global panel compatibility. With blade-end x blade-end connections and stud mounting, installation is straightforward in space-constrained enclosures. This fusion of robust protection and global certifications supports safer, more reliable equipment with predictable uptime. Leveraging standard FWX specifications helps simplify procurement, spare parts, and maintenance planning across international sites. Knowing the device delivers 600 V rating, 90 A RMS, and 200 kAIC interrupt capacity provides confidence during protection sizing.
Product Information
Extended Description
FWX-90A Eaton: Eaton Bussmann series FWX high speed fuse, 600V, 90A 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-90A
UPC
051712150620
Product Length/Depth
3.11 in
Product Height
3.11 in
Product Width
1.23 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
CSA Certified UL Recognized
Amperage Rating
90A RMS
Interrupt rating
200 kAIC Vac 50 kAIC at 250 Vdc
Voltage rating
600 V
Watt losses
9 W
Packaging type
Standard
Connection
Blade end x blade end
Fuse indicator
Non Indicating
Mounting method
Stud
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - FWX-90A
Bussmann series FWX 35-2500A high speed fuses data sheet no. 720005
Bussmann series FWX 35-2500A high speed fuses data sheet no. 720005
Datasheet - FNQ-30
FWX-90A is a high speed fuse designed to protect electrical circuits rapidly, reducing conductor heating and the risk of equipment damage in the event of an overcurrent. Business impact includes shorter downtime, lower repair costs, and improved panel reliability in industrial automation and drive systems. This device supports 600 V operation with 90 A RMS capacity and an impressive 200 kAIC interrupt rating for AC, plus 50 kAIC at 250 Vdc for certain DC applications, enabling safe use in mixed AC/DC environments. The blade-end x blade-end connection and stud mounting simplify retrofit and field installation, even in compact control cabinets. Applications span motor controllers, PLC panels, and power distribution enclosures where fast fault isolation is critical. Certifications (CE, RoHS, UL, CSA) streamline regulatory alignment and unit sourcing across global sites.
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FAQs
FWX-90A uses blade-end x blade-end connections and a stud mounting method, which supports straightforward retrofits in panels that already utilize Bussmann FWX devices. Its compact footprint (3.11 in L, 3.11 in H, 1.23 in W) and 0.3 lb weight help minimize panel crowding. Confirm space for mounting clearance, ensure proper terminal access, and verify conformance with 600 V systems. Non-indicating indicators simplify status checks, while the 90 A RMS rating guides fuse sizing in line with drive and control circuit loads.
FWX-90A is rated for 600 V and 90 A RMS with an interrupt rating of 200 kAIC at AC and 50 kAIC at 250 V DC. Power loss is specified at 9 W, reflecting a balance between protection speed and heat generation. The device supports blade-end connections and stud mounting, enabling reliable integration into standard industrial control and automation circuits.
FWX-90A provides 50 kAIC interrupt capability at 250 V DC in addition to 200 kAIC at AC, making it suitable for certain DC applications within the specified voltage and current limits. Always consult the official datasheet (FWX-90A and 720005 series) for exact DC compatibility, as DC performance can vary with circuit topology and fault conditions.
FWX-90A carries CE Mark, RoHS compliance, UL Recognized, and CSA Certified credentials. These certifications support global panel approvals, reduce regulatory risk during audits, and simplify supplier qualification. The combination of these marks is especially valuable for multi-site deployments and for vendors selling into regulated industries.
The FWX-90A delivers rapid overcurrent interruption, reducing fault propagation and downtime. Its 9 W watt loss minimizes heat generation, contributing to cooler panel environments and potential energy savings over time. Global certifications simplify procurement, while predictable protection sizing lowers spare-part inventory and maintenance costs. Overall, operators can expect improved uptime, lower repair costs, and smoother compliance workflows when deployed in motor-drive and automation panels.