Eaton FWH-300A High Speed Fuse - UL Recognized, 200 kAIC @ 1000 Vac
Part Number: FWH-300A
Quick Summary
The Eaton FWH-300A high speed fuse protects industrial controls by fast, reliable circuit interruption. In demanding automation environments, nuisance trips and slow protection can trigger costly downtime and equipment damage. This device carries UL Recognized and CSA Certified markings, is CE Marked, and RoHS compliant, ensuring global regulatory acceptance. With a 1000 Vac and 800 Vdc rating, 300 A RMS amperage, and 200 kAIC interrupt capacity at 1000 Vac, it delivers robust protection for drives, switchgear, and motor circuits. Its non-indicating design reduces visual maintenance in cluttered panels, while the blade-end X blade-end connection and stud mounting option support flexible, retrofit-friendly installation across multiple enclosure configurations. This combination translates to improved uptime and lower total cost of ownership.
Product Information
Extended Description
FWH-300A Eaton: Eaton Bussmann series FWH high speed fuse, 1000 Vac, 800 Vdc, 300A RMS, 200 kAIC at 1000 Vac, 50 kAIC at 500 Vdc, Non Indicating, High speed fuse, Blade end X blade end, Stud
Product Name
Eaton Bussmann series FWH high speed fuse
Catalog Number
FWH-300A
UPC
051712150163
Product Length/Depth
1.69 in
Product Height
1.61 in
Product Width
4.52 in
Product Weight
0.52 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
UL Recognized CSA Certified
Amperage Rating
300A RMS
Interrupt rating
200 kAIC at 1000 Vac 50 kAIC at 500 Vdc
Voltage rating
1000 Vac, 800 Vdc
Watt losses
51 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 - FWH-300A
FWH-300A~BUSS HIGH SPEED FUSE
FWH-300A~BUSS HIGH SPEED FUSE
Datasheet - FNQ-30
Feature a very fast interruption response minimizes fault energy and downstream damage, boosting line reliability and reducing unplanned downtime. Business impact: fewer process interruptions in high-speed manufacturing lines and safer arc management in power distribution. Application: drives, motors, and control cabinets where rapid fault clearing protects expensive equipment. Feature a 1000 Vac / 800 Vdc rating paired with 300 A RMS capability enables consistent protection in mixed AC/DC environments, reducing nuisance trips while supporting scalable automation hardening. Business impact: improved equipment lifespan and simpler maintenance planning across industrial plants. Application: large automation cells, CNC, and packaging lines that demand dependable overcurrent protection. Feature interrupt rating of 200 kAIC at 1000 Vac and 50 kAIC at 500 Vdc delivers robust short-circuit protection, decreasing cascade failures. Application: high-energy fault scenarios in motor drives and power distribution. Feature flexible mounting and connection options (blade end x blade end and stud), offering installation versatility and retrofit ease. Business impact: faster panel assembly and reduced installation costs. Application: OEM and retrofit projects across machines and lines. Feature certifications and compliance (UL Recognized, CSA Certified, CE Marked, RoHS Compliant) provide global procurement confidence and regulatory alignment. Application: worldwide facilities and multi-site deployments with consistent safety and documentation.
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FAQs
The FWH-300A supports blade end x blade end connections as well as stud mounting, providing installation flexibility for different panel designs. Blade-end configurations simplify drop-in replacement in existing fuse blocks, while stud mounting offers rigid support for secure, vibration-resistant installation in enclosures. This versatility helps reduce retrofit time and carpentering costs in spare-part handling.
FWH-300A is rated for 1000 Vac and 800 Vdc, with a continuous amperage rating of 300 A RMS. It provides an interrupt rating of 200 kAIC at 1000 Vac and 50 kAIC at 500 Vdc, allowing it to safely clear high-energy faults. The device also has watt losses of 51 W, and a non-indicating design for simple panel integration.
Yes. With high-speed interrupt capability and broad AC/DC voltage ratings, the FWH-300A is well suited for protecting motor drives, drivesets, and related control circuits. Its robust interrupt ratings help prevent fault propagation to downstream equipment, while the blade end and stud mounting options support straightforward installation in motor control centers and drive panels.
The FWH-300A carries UL Recognized and CSA Certified marks, is CE Marked, and RoHS Compliant. These certifications confirm safety, reliability, and environmental compliance for widespread regulatory acceptance, enabling procurement across multinational sites and simplifying documentation for audits and supplier qualifications.
The FWH-300A provides a measurable return on investment through reduced downtime from fast fault clearing, lower arc energy impact, and reliable protection for critical line gear. Its standardized dimensions and mounting options minimize installation time, while compliance reduces regulatory risks and streamlines cross-site deployments, contributing to lower total cost of ownership.