Eaton FNQ-R-4/10 Fuse - 200 kAIC Time-Delay Class CC
Part Number: FNQ-R-4/10
Quick Summary
The Eaton FNQ-R-4/10 fuse is a current-limiting, time-delay device designed for line protection and small control transformers. In industrial panels, nuisance tripping from inrush can undermine uptime, so selecting the right fuse is critical. This FNQ-R model is CE marked and built as a Class CC, current-limiting fuse with a 200 kAIC interrupt rating to meet demanding protection standards. Its 0.4 A rating and 600 V rating make it a solid fit for low-voltage branch circuits and industrial control applications. By combining reliable protection with compact form and easy ferrule-end termination, it supports safer, faster maintenance and lower total cost of ownership for control panels and industrial equipment.
Product Information
Extended Description
FNQ-R-4/10 Eaton: Eaton Bussmann Series Class CC fuse, FNQ, time-delay, dual-element current limiting fuse, 0.4 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series FNQ-R fuse
Catalog Number
FNQ-R-4/10
UPC
051712496919
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.15 lb
Warranty
Not Applicable
Compliances
CE Marked
Type
Current-limiting high inrush time-delay fuse
Special features
Rejection style
Application
Line protection, small control transformers, industrial control, branch circuits
Amperage Rating
0.4 A
Class
Class CC
Interrupt rating
200 kAIC
Fuse indicator
Non-indicating
Connection
Ferrule end x ferrule end
Response time
12 sec at 200%
Material
Melamine tube
Packaging type
Standard
Voltage rating
600 V
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series FNQ-R Class CC Fuse Data Sheet No. 1014
Feature → Business Impact → Application: The FNQ-R-4/10 delivers current-limiting protection with a time-delay response, reducing the risk of nuisance outages during startup while still interrupting faults quickly. This translates to improved line protection for transformers and branch circuits, minimizing downtime and component wear in industrial control panels. Application: protects small control transformers and branch circuits in industrial environments, with a compact footprint suitable for crowded panels. Feature → Business Impact → Application: Its 0.4 A amperage rating and 600 V voltage rating ensure targeted protection for low-power control circuits without sacrificing safety, enabling compliant installations in European and North American panels. Application: ideal for low-current control circuits and line protection in machine control and automation panels. Feature → Business Impact → Application: Rejection style design simplifies fuse status determination and reduces misinsertion during replacement, saving time during maintenance. Application: straightforward integration into ferrule-end wiring schemes in control cabinets. Feature → Business Impact → Application: 200 kAIC interrupt rating provides robust fault current protection, supporting design margins for startup surges and short-circuit events. Application: critical in feeders and branch circuits with high fault-current potential. Feature → Business Impact → Application: CE marking confirms compliance with European safety standards, while the melamine tube construction offers heat resistance and durability in harsh environments. Application: suitable for harsh industrial settings and compliant with global protection standards. Feature → Business Impact → Application: Ferrule end x ferrule end connections enable quick, reliable installation and repeatable replacements in standard low-voltage fuses. Application: supports fast panel revisions and maintenance in automation equipment and control cabinets.
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FAQs
When replacing, verify the amperage rating of 0.4 A, Class CC compatibility, 600 V voltage rating, and ferrule-end connections. Confirm the physical size (1.5 in length, 0.41 in width/height) fits the panel fusible link holder, and ensure the interrupt rating of 200 kAIC matches your system fault current.
The FNQ-R-4/10 is a time-delay, current-limiting fuse designed to tolerate short inrush events without tripping, while still interrupting faults promptly. Its 12 seconds at 200% response time characteristic provides controlled delay for startup surges, reducing nuisance trips in motor loads and transformer start-ups.
Yes. With a 0.4 A rating, 600 V rating, and 200 kAIC interrupt capability, the FNQ-R-4/10 is well-suited for protecting small control transformers and line circuits in industrial control panels, providing reliable protection without compromising normal operation.
The FNQ-R-4/10 is CE marked, confirming adherence to European safety standards. This certification matters for compliance in international installations and for customers targeting regulatory conformity in industrial environments.
The rejection-style, non-indicating design reduces misinsertion risk and simplifies replacements, lowering maintenance time. Its durability and reliable protection reduce unplanned downtime in panels, contributing to lower total cost of ownership and faster project ROI in automation initiatives.