Eaton FRS-R-75 Fuse - Class RK5, 200 kAIC at 600 Vac
Part Number: FRS-R-75
Quick Summary
Eaton Bussmann FRS-R-75 fuse is a time-delay, dual-element protection device for industrial control and motor circuits. In many panels, nuisance trips and slow fault isolation challenge maintenance and uptime, driving cost and risk. It is CE marked and RoHS compliant, aligning with European safety requirements and sustainability initiatives. By delivering reliable protection in a compact RK5 package with a 75 A rating, the FRS-R-75 supports high fault current scenarios while minimizing unplanned downtime. This combination of safety compliance and robust electrical performance translates to lower total cost of ownership and steadier production runs for your facility.
Product Information
Extended Description
FRS-R-75 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 75 A, non-indicating fuse, interrupting rating of 200 kA at 600 Vac and 20 kA at 300 Vdc
Product Name
Eaton Bussmann series FRS-R fuse
Catalog Number
FRS-R-75
UPC
051712508599
Product Length/Depth
7.88 in
Product Height
1.11 in
Product Width
1.11 in
Product Weight
0.35 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
75 A
Interrupt rating
200 kAIC at 600 Vac 20 kAIC at 300 Vdc
Response time
10 sec at 500%
Voltage rating
600 Vac, 300 Vdc
Number of elements
Dual
Packaging type
Standard
Class
Class RK5
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series FRS-R 600 V Class R 65-600 A fuse data sheet no. 1018
Feature: Time-delay, dual-element design. Benefit: Allows safe motor starting surges and transient currents without nuisance tripping, improving process uptime. Application: Motor feeders and control circuits in industrial panels benefit from smoother startups and fewer interruptions. Feature: Current-limiting with high interrupt rating. Benefit: Quickly contains faults, protecting downstream components and reducing damage risk. Application: Main feeds and distribution blocks in high-current environments. Feature: 75 A rating with standard RK5 blade-end connections. Benefit: Easy drop-in replacement in existing RK5 holders, simplifying installation and spare parts management. Application: Retrofit projects and new builds in control cabinets. Feature: Non-indicating fuse construction. Benefit: Reduces wiring complexity and panel space while lowering maintenance costs where indicators aren’t required. Application: Simple protection schemes in compact or budget-conscious assemblies. Feature: Compliance and class RK5 compatibility. Benefit: Ensures reliable integration with Bussmann RK5 families and standard protective assemblies. Application: Panels designed around RK5 protection for predictable protection coordination. Security note: 10 s response at 500% available for rapid coordination decisions in fault events.
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FAQs
The FRS-R-75 uses blade end x blade end connections and fits standard RK5 holders. Confirm panel clearance for a 7.88 inch long fuse and align with the blade connectors to ensure proper seating. After insertion, verify contact integrity and recheck panel wiring for no clearance issues. This approach minimizes downtime during retrofit or initial assembly and supports consistent protection coordination with other RK5 devices.
The fuse is rated at 75 A with an interrupt rating of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc, providing current-limiting protection for high-current circuits. It is time-delay (dual-element) with a 10 second response at 500% overload, allowing short surges typical in motor start-ups while safeguarding downstream components from severe faults.
Yes. Its time-delay, dual-element design handles motor surge currents without nuisance trips, while maintaining robust short-circuit protection through a high 200 kAIC at 600 Vac interrupt rating. This makes it well-suited for motor feeders and control circuits where reliable starting and protection coordination are essential.
The FRS-R-75 is CE marked and RoHS compliant, supporting regulatory requirements in many global markets. These certifications help ensure product conformance with safety, environmental, and sustainability standards in modern electrical installations.
Because the FRS-R-75 is non-indicating, status indication requires external monitoring in the panel. Plan replacements based on fault history and panel wear, stock standard RK5 compatible devices, and verify blade connections during renewal. Routine inspection of the panel’s protection coordination helps prevent cascading faults and reduces unexpected downtime.