Eaton FWH-800A High Speed Fuse - UL Recognized

Part Number: FWH-800A
Manufacturer
Eaton
Part number
FWH-800A

Quick Summary

Eaton FWH-800A high speed fuse provides fast-acting protection for critical power rails in industrial drives. Engineers often battle nuisance trips that stall commissioning and drive downtime. UL Recognized, CSA Certified, and CE RoHS compliant, the FWH line meets essential safety and environmental standards. With ratings up to 700 Vac (UL) and 690 Vac (IEC) and up to 500 Vdc, it delivers reliable overcurrent protection across challenging industrial networks. The unit offers non-indicating, high-speed protection with blade-end connections or stud mounting, enabling flexible installation in control panels and equipment racks while supporting long-term system reliability and lower maintenance costs and improved uptime.

Product Information

Extended Description

FWH-800A Eaton: Eaton Bussmann series FWH high speed fuse, 700 Vac (UL), 690 Vac (IEC), 500 Vdc (2-100A), 500 Vac, 800A 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-800A
UPC
051712150248
Product Length/Depth
8 in
Product Height
2.59 in
Product Width
2.48 in
Product Weight
1.96 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
UL Recognized CSA Certified
Amperage Rating
800A RMS
Interrupt rating
50 kAIC at 500 Vdc 200 kAIC at 1000 Vac
Voltage rating
700 Vac (UL), 690 Vac (IEC), 500 Vdc (2-100 A), 500 Vac
Watt losses
129 W
Packaging type
Standard
Connection
Blade end x blade end
Fuse indicator
Non Indicating
Mounting method
Stud
Paragraphs:Feature: High-speed operation with 800A RMS capacity ensures rapid interruption during overcurrents. This fast response minimizes arc exposure, protects critical motors and drives, and reduces unplanned downtime in demanding manufacturing environments. Application-wise, it is ideal for industrial drives, motor controllers, and power distribution panels that demand dependable fault protection without nuisance trips.Feature: Flexible connections with blade end x blade end and stud mounting provide installation versatility. Business impact: Simplified retrofits and upgrades reduce wiring complexity and accelerate panel commissioning. Application: Control cabinets, machine centers, and assembly lines where space constraints and mechanical security are critical. This flexibility minimizes revisions during upgrades.Feature: Comprehensive electrical ratings and high fault-current capability. Business impact: The 700 Vac (UL) / 690 Vac (IEC) voltage ratings with 800A RMS and 50 kAIC at 500 Vdc plus 200 kAIC at 1000 Vac enable protection across diverse networks, reducing the risk of misapplication. Application: High‑voltage industrial systems, motor drives, and DC link protection in mixed- voltage architectures.Feature: Global compliance portfolio. Business impact: UL Recognized, CSA Certified, and CE Marked RoHS compliance streamline sourcing for multinational projects and shorten qualification cycles. Application: Procurement for export‑ready equipment and facilities with strict regulatory requirements, including automotive, packaging, and process industries.Feature: Physical footprint and thermal considerations. Business impact: With eight inches of length, 2.59 inches high, and 2.48 inches wide, plus 1.96 pounds weight, this fuse fits dense panel layouts while leaving room for cooling; watt losses are 129 W, enabling predictable heat budgets. Application: Enclosures and switchgear assemblies where space planning and thermal management are critical, including data centers, packaging lines, and automated machining cells.Feature: Maintenance-friendly design. Business impact: Non-indicating status and straightforward blade or stud connections reduce downtime during replacements and service calls. Application: Field service and preventive maintenance programs that optimize uptime and asset utilization.

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FAQs

FWH-800A supports blade end x blade end connections and stud mounting, offering two distinct installation paths. This versatility makes it easy to drop into existing Bussmann fuse holders or secure in rugged enclosures, reducing wiring complexity and mechanical stress on the terminals. It's well suited for control panels, machine centers, and retrofit projects where space or mounting constraints matter.
Electrical ratings for the FWH-800A include 800A RMS current and high interrupt capability. It is rated at 700 Vac (UL) and 690 Vac (IEC), with 500 Vdc ratings for 2–100 A; interrupt ratings are 50 kAIC at 500 Vdc and 200 kAIC at 1000 Vac. This combination supports fast protection in demanding systems.
Yes, this product covers a range of high voltage AC and DC protections. Its 700 Vac UL and 690 Vac IEC ratings apply to AC networks, while 500 Vdc ratings (2–100 A) support DC bus protection. When selecting, ensure fault-current levels remain within the listed 50–200 kAIC range to avoid over- or under-protection.
Yes, the FWH-800A carries UL Recognized and CSA Certified marks along with CE RoHS compliance. These certifications support global procurement and regulatory acceptance across many markets. These certifications support end-user confidence and serviceability across teams. The non-indicating design does not affect compliance, but installation must observe proper safety procedures and rated connections to maintain conformance.
Installation and maintenance considerations include confirming blade‑end and stud mounting compatibility with your fuse holders, ensuring secure mechanical attachment, and accounting for 129 W watt losses in panel cooling plans. Non-indicating status means routine electrical checks are essential. Plan for straightforward replacements during preventive maintenance to minimize panel downtime. Additionally, verify conductor clearance and fuse holder ratings to avoid insulation damage.