Eaton FNQ-R-3-1/2 Fuse - 200 kAIC
Part Number: FNQ-R-3-1/2
Quick Summary
The Eaton FNQ-R-3-1/2 fuse is a current-limiting, time-delay device designed for line protection in small control transformers and branch circuits. Engineers often face nuisance inrush trips that disrupt uptime; this fuse tolerates brief surges without compromising protection. RoHS compliant and CE marked, it also offers a 600 V rating and a 200 kAIC interrupt rating for robust industrial use. In addition, its compact ferrule-end design simplifies installation in cramped panels. Designed for the FNQ-R family, it supports consistent performance across service intervals. This makes it a practical, field-friendly choice for OEMs and panel builders.
Product Information
Extended Description
FNQ-R-3-1/2 Eaton: Eaton Bussmann Series Class CC fuse, FNQ, time-delay, dual-element current limiting fuse, 3.5 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series FNQ-R fuse
Catalog Number
FNQ-R-3-1/2
UPC
051712496995
EAN
5027590060356
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
RoHS Compliant 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
3.5 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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series FNQ-R Class CC Fuse Data Sheet No. 1014
Time-delay current-limiting protection delivers selective coordination during startup surges, reducing nuisance trips while protecting transformers and control circuitry. This translates to improved machine uptime and lower maintenance costs in automated lines. The rejection-style design prevents mis-insertion, enhancing panel safety and reducing field service calls due to incorrect fuse placement. Ferrule-end connections and a 1.5 in length pair with standard enclosures, enabling straightforward retrofits and quick replacements in existing panels. A 600 V rating and 200 kAIC interrupt capacity ensure robust fault handling for medium-size industrial loads, while the Class CC construction provides reliable performance under continuous operation. The non-indicating indicator reduces panel clutter, though you’ll want to couple it with routine diagnostics for proactive maintenance. RoHS and CE compliance further simplify regulatory acceptance across global environments. The FNQ-R-3-1/2 is well-suited for line protection, small transformers, and industrial control circuits in manufacturing environments where uptime matters.
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FAQs
FNQ-R-3-1/2 uses ferrule-end conductors and measures 1.5 inches in length, with a compact 0.41 by 0.41 inch footprint. Ensure panel openings and mounting accommodate the ferrule ends, tighten ferrule connections to spec, and verify a 600 V rating is suitable for the circuit. Confirm the fuse is oriented correctly to avoid physical interference with wiring harnesses and follow standard safety procedures during replacement.
The fuse combines time-delay operation with current-limiting action, enabling it to ride through short inrush events typical of small control transformers while still interrupting substantial faults. Its 3.5 A rating aligns with transformer protection needs, and its 200 kAIC interrupt rating ensures resilience against high-energy faults common in industrial environments.
Key specs include amperage rating of 3.5 A, voltage rating of 600 V, Class CC classification, 200 kAIC interrupt rating, time-delay current-limiting behavior, non-indicating fuse indicator, and ferrule end-to-end connections. The unit is RoHS compliant and CE marked, with a 1.5 inch length and compact footprint suitable for panel-listed installations.
This fuse is RoHS compliant and CE marked, meeting European electrical safety and environmental requirements. These certifications simplify design-in and regulatory approval for global panel builders, ensuring that the product aligns with environmental standards while delivering reliable protection in industrial circuits.
By tolerating inrush without compromising protection, the FNQ-R-3-1/2 reduces nuisance trips and maintenance, improving line uptime. Its compact form factor and ferrule-end connections speed installation, while the high interrupt rating provides robust fault protection, contributing to lower total cost of ownership (TCO) in control panels and transformer-fed circuits.