Eaton BK/FNQ-R-1/2 Fuse - Class CC, 600 V
Part Number: BK/FNQ-R-1/2
Quick Summary
The Eaton FNQ-R BK/FNQ-R-1/2 fuse provides current-limiting, time-delay protection for electrical circuits in control panels and small motor applications. Engineers often struggle with nuisance trips and insufficient interruption ratings in crowded panel setups, which this fuse helps mitigate with precise performance. Key certifications help ensure compliance in regulated environments, including CE Marking and RoHS compliance. With a 600 V rating, 200 kAIC interrupt capability, and a compact 2 in length, it delivers reliable protection without sacrificing space. This product also supports bulk packaging for streamlined procurement, reducing downtime during maintenance and stocking cycles while maintaining compatibility with Bussmann series components.
Product Information
Extended Description
BK/FNQ-R-1/2 Eaton: Eaton Bussmann series FNQ-R fuse, Current-limiting time-delay fuse, 0.5 A, Class CC, Non-indicating, 12 sec at 200%, 200 kAIC at 600 Vac, Melamine tube, Nickel-plated brass endcap, Bulk, 600 V
Product Name
Eaton Bussmann series FNQ-R fuse
Catalog Number
BK/FNQ-R-1/2
UPC
051712411608
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.15 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Catalog Notes
Bulk
Type
Current-limiting time-delay fuse
Special features
Silver-plated fuse caps
Amperage Rating
0.5 A
Class
Class CC
Interrupt rating
200 kAIC at 600 Vac
Fuse indicator
Non-indicating
Response time
12 sec at 200%
Material
Nickel-plated brass endcap Melamine tube
Packaging type
Standard Bulk
Voltage rating
600 V
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - BK/FNQ-R-1/2
Feature → Business Impact → Application: The FNQ-R fuse is a current-limiting, time-delay design, which reduces arc flash risk and limits fault currents quickly, improving system reliability and safety in panel boards and machine controls. This translates to fewer nuisance trips during startup and transient faults, lowering downtime and maintenance costs in manufacturing lines and process controls. Application: ideal for control panels, small motor drives, and automation circuits where stable operation and fast clearing are essential. Feature → Business Impact → Application: Amperage rating of 0.5 A paired with Class CC construction provides compact, space-efficient protection with predictable coordination in multi-fuse blocks. Application: substitution-friendly for legacy Bussmann assemblies and retrofit projects in industrial facilities seeking consistent replacement parts. Feature → Business Impact → Application: 200 kAIC interrupt rating at 600 Vac ensures high fault-current withstand capability, reducing downstream damage and enabling safer distribution in high-energy environments. Application: critical in motor control centers, feeders, and industrial instrumentation racks. Feature → Business Impact → Application: Silver-plated fuse caps and nickel-plated brass endcaps improve contact reliability and longevity, lowering contact resistance and maintenance frequency in dirty or humid plant settings. Application: harsh environments with dust or moisture ingress where durable end connections matter. Feature → Business Impact → Application: 12-second response at 200% fault current provides predictable protection margins for load transients, supporting safe startup and shutdown sequences in automation loops. Application: robotics and CNC equipment where precise timing is crucial for cycle control. Feature → Business Impact → Application: Bulk packaging and standard 2 inch length simplify inventory management and field replacement, enabling faster service calls and reduced stockouts. Application: maintenance operations in OEM and aftermarket service environments requiring quick part replacement. Copy-ready: The FNQ-R series is widely compatible with other Bussmann FNQ components, ensuring straightforward cross-repairs and scalable protection schemes across facilities.
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FAQs
Install the BK/FNQ-R-1/2 by aligning the fuse in the standard Bussmann FNQ holder, ensuring proper endcap contact with the nickel-plated brass ends. Confirm the 600 V rating matches system voltage, and replace only with an identical 0.5 A Class CC device to maintain coordinated protection. The 2 in length and 0.56 in diameter support compact panel layouts and quick field changes, especially in bulk-packaged inventories.
Its current-limiting, time-delay design provides fast fault current restriction while allowing normal operation, reducing nuisance trips during startup. With a 200 kAIC interrupt rating at 600 Vac, it protects delicate control electronics against high-energy faults common in automation equipment, making it a dependable choice for PLCs, relays, and small motor circuits.
Yes. The BK/FNQ-R-1/2 is designed as part of the FNQ-R current-limiting family and matches the Class CC form factor, allowing straightforward cross-replacements and scalable protection across existing Bussmann series installations in industrial environments.
This fuse is CE Marked and RoHS Compliant, ensuring compliance with European safety and environmental standards. These certifications help support regulatory documentation and streamline audits for machinery and panel builds in many industries.
The high interrupt rating and durable construction reduce downtime from fault events and maintenance cycles. Bulk packaging lowers stocking costs, while the ballast of compatibility with Bussmann FNQ components simplifies spares management and field service, contributing to faster repairs and lower total cost of ownership in manufacturing and process automation.