Eaton FCF40RN Fuse - UL Class CF Fast Acting Fuses
Part Number: FCF40RN
Quick Summary
The Eaton FCF40RN fuse provides fast-acting protection for 40 A circuits in industrial power distribution. This addresses the common pain point of nuisance trips and downtime caused by mismatched interrupt ratings during panel upgrades. UL Listed and CSA Certified, CE Marked and RoHS Compliant, the device offers regulatory assurance across global installations. Its Class CF, blade-end design and compatible Bussmann series form factor streamline replacements, reduce maintenance, and accelerate project timelines. By aligning with 600 Vac/600 Vdc systems and a 40 A rating, it supports scalable, safe power distribution across facilities.
Product Information
Extended Description
FCF40RN Eaton: Eaton Bussmann Series UL Class CF, FCF fuse, fast-acting, single-element cube fuse, 40 A, non-idicating fuse, interrupting rating of 50 kA at 600 Vdc and 300 kA at 600 Vac
Product Name
Eaton Bussmann series FCF fuse
Catalog Number
FCF40RN
UPC
051712362504
Product Length/Depth
2.13 in
Product Height
1.9 in
Product Width
1 in
Product Weight
0.17 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
UL Listed CSA Certified
Amperage Rating
40 A
Frequency rating - max
60 Hz
Frequency rating - min
50 Hz
Interrupt rating
300 kAIC at 600 Vac 50 kAIC at 600 Vdc
Response time
6 min at 200%
Voltage rating
600 Vac, 600 Vdc
Color
Black
Fuse type
Class CF Fast acting
Material
Glass filled PES
Number of elements
1
Operating Temperature
-40° to 80°C
Packaging type
Standard
Terminal material
Electroless tin plated copper alloy terminal
Class
Class CF
Connection
Blade end
Fuse indicator
Non-indicating
Special features
Superior overload and cycling capabilities
Used with
TCFH60N, CCP2-3-60CF
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
The Power of Space
The Power of Space
Bussmann series Fast-acting CUBEFuse data sheet no. 2147
UL Class CF fast-acting cube fuse with a 40 A rating and a 600 Vac/600 Vdc operating envelope. Business Impact: The rapid trip characteristic minimizes fault duration, limiting arc exposure and protecting downstream devices, while delivering predictable fault clearance for safer, more reliable operations. Application: Well suited for power distribution panels, motor control centers, and industrial control cabinets where compact protection is required without compromising reliability. Designed for selective coordination with upstream protection devices, it helps minimize downtime during fuse replacement. Feature: Blade-end connection and electroless tin-plated copper alloy terminals deliver robust, corrosion-resistant terminations with low contact resistance. Business Impact: This simplifies field replacements, reduces commissioning time, and improves long-term reliability in challenging environments. Application: Ideal for retrofits or expansions in existing Bussmann series installations, enabling quick switchover without major panel redesigns or rewiring. Thermal performance under continuous load remains stable thanks to the glass-filled PES housing. Feature: Glass-filled PES housing and a single-element design support dependable operation across a wide temperature range of -40°C to 80°C. Business Impact: This expands deployment options in non-climate-controlled spaces, reducing the need for enclosures and associated cooling costs. Application: Suitable for manufacturing lines, packaging equipment, and process-control panels in diverse industrial environments. The wide operating temperature and robust termination contribute to long service life in outdoor or factory-floor environments. Feature: Compliance and certification support including CE, RoHS, UL Listed, CSA Certified, with non-indicating status and documented overload response times. UL Listed and CSA Certified statuses are backed by Eaton's testing and documentation, easing customer audits. Feature: Blade-end terminations and straightforward installation support quick field swaps. Business Impact: Customers report faster time-to-value when replacing legacy fuses with FCF40RN due to blade-end terminations and straightforward installation. Application: Suitable for retrofits and new panel builds in industrial facilities.
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FAQs
The FCF40RN uses a blade-end connection compatible with Eaton Bussmann Class CF holders and standard busbar terminations. Its 600 Vac/600 Vdc rating and single-element cube construction are designed for straightforward retrofit in existing control panels, minimizing rewiring and downtime during an upgrade.
The fuse provides 300 kAIC at 600 Vac and 50 kAIC at 600 Vdc with a 40 A rating and 600 Vac/600 Vdc voltage rating. These ratings support fast fault clearing for high-energy circuits while ensuring safe operation in mixed AC/DC environments, essential for motor drives and power distribution panels.
Yes. Rated for 600 Vac and 600 Vdc, with a fast-acting Class CF design, it is appropriate for AC control circuits and DC bus structures within industrial equipment, provided the circuitry remains within its voltage, current, and interruption ratings.
The FCF40RN is UL Listed, CSA Certified, CE Marked, and RoHS Compliant. These certifications support regulatory approvals across multiple regions, simplify audits, and help demonstrate compliance during safety and environmental assessments.
Upgrading to the FCF40RN can reduce nuisance trips and maintenance labor due to its reliable fast-acting performance and compatible form factor. The blade-end terminals simplify installation, decreasing downtime and accelerating time-to-value, which contributes to lower total cost of ownership over the equipment lifecycle.