Eaton BK/FNQ-R-1-1/4 Fuse - Class CC, 200 kAIC
Part Number: BK/FNQ-R-1-1/4
Quick Summary
The Eaton Bussmann FNQ-R fuse provides current-limiting protection for line power and industrial control circuits. Its time-delay design minimizes nuisance interruptions while reliably isolating faults, reducing unplanned downtime and simplifying panel maintenance. Certified with CE marking and RoHS compliance, it supports global deployments, while a 600 V rating and 200 kAIC interrupt capability ensure robust protection for demanding systems. Bulk packaging and a compact 2 inch length streamline procurement and installation in crowded control panels. Utilizing silver-plated fuse caps and Class CC construction, it delivers consistent performance across varying temperatures and fault conditions.
Product Information
Extended Description
BK/FNQ-R-1-1/4 Eaton: Eaton Bussmann series FNQ-R fuse, Current-limiting, Line protection, Small control transformers, Industrial control, Branch circuits, 1.25 A, Class CC, Non-indicating, 12 sec at 200%, 200 kAIC at 600 Vac, Bulk, 600 V
Product Name
Eaton Bussmann series FNQ-R fuse
Catalog Number
BK/FNQ-R-1-1/4
UPC
051712269407
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
Application
Line protection, small control transformers, industrial control, branch circuits
Amperage Rating
1.25 A
Class
Class CC
Interrupt rating
200 kAIC at 600 Vac
Fuse indicator
Non-indicating
Response time
12 sec at 200%
Packaging type
Standard Bulk
Voltage rating
600 V
BK/FNQ-R-1-1/4~BK-FNQ-R-1-1-4~CLASS CC TIME DELAY BULK
BK/FNQ-R-1-1/4~BK-FNQ-R-1-1-4~CLASS CC TIME DELAY BULK
Bussmann series Fuseology
Eaton Specification Sheet - BK/FNQ-R-1-1/4
Feature: Current-limiting time-delay fuse provides fast fault isolation. Impact: Reduces arc flash potential and minimizes collateral damage in feeders and transformers, improving system reliability and maintenance windows. Application: Effective in line protection, small control transformers, industrial control panels, and branch circuits in automation across mid-to-large facilities. Feature: Class CC construction with a compact form factor. Impact: Enables the fuse to fit in crowded control panels and standard fuse blocks, preserving cabinet space. Application: Common in motor control centers and panel boards where space is at a premium. Feature: Amperage rating of 1.25 A. Impact: Supports selective coordination with upstream devices, preventing nuisance trips during normal startup currents. Application: Suitable for protecting small transformers and branch circuits in automation and control systems. Feature: 200 kAIC interrupt rating at 600 VAC. Impact: Provides high fault current interruption capability, enhancing safety and protecting upstream equipment. Application: Use in industrial protection schemes with high short-circuit demands. Feature: Non-indicating fuse with silver-plated caps and CE/RoHS compliance. Impact: Reduces panel clutter while ensuring reliable connections and regulatory compliance for global deployments. Application: Ideal for bulk procurement in OEM builds and service fleets needing durable, compliant protection devices.
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FAQs
The BK/FNQ-R-1-1/4 is a current-limiting time-delay fuse designed for line protection and industrial control circuits. It fits standard Bussmann-size fuse blocks with a 2 in body length, and it’s well-suited for use in control panels housing small transformers and branch circuits. For coordinations, ensure upstream devices share compatible amperage and interrupt ratings to maintain selective protection and minimize nuisance tripping during startup surges.
Key specs include a 1.25 A amperage rating, 600 V voltage rating, and a 200 kAIC interrupt rating at 600 VAC. It is a Class CC current-limiting time-delay fuse with a non-indicating indicator and a 12-second response at 200% of rated current. These characteristics support reliable protection in industrial control and line protection applications while enabling coordination with upstream devices.
Yes. The FNQ-R-1-1/4 carries CE marking and RoHS compliance, ensuring regulatory alignment for global manufacturing environments and reducing compliance risk when deploying across multiple regions. This makes it suitable for international procurement and long-term maintenance in diverse facilities.
The current-limiting, time-delay design reduces fault current while tolerating brief overloads, which minimizes unnecessary outages during startup or transient events. With a 1.25 A rating and 200 kAIC interruption capability, it coordinates with upstream protection to shield small control transformers and sensitive industrial controls from excessive fault energy, extending component life and uptime.
Bulk packaging simplifies stocking and reorder cycles, while the silver-plated fuse caps improve connection reliability in demanding environments. Since the device is non-indicating, plan for an external status method in critical applications. Always replace with an identical model (BK/FNQ-R-1-1/4, Class CC) to maintain coordination and protection performance across the system.