Bussmann FRS-R Series Dual-Element Class RK5 Fuse, Ferrule End

Bussmann FRS-R Series Dual-Element Class RK5 Fuse, Ferrule End

The Bussmann FRS-R Series from Eaton is a dual-element, time-delay fuse built to Class RK5 specifications for reliable overcurrent protection in commercial and industrial circuits. Available in 4A and 7A ratings, this ferrule end x ferrule end, non-indicating fuse is rated 600 VAC and 300 VDC, with an interrupt rating of 200 kAIC at 600 VAC and 20 kAIC at 300 VDC. Its dual-element construction delivers a 10-second opening time at 500% of rated current, allowing momentary overloads to pass while still protecting against sustained faults.

Key Features

• Amp Rating Range: Available in 4A and 7A ratings to match a range of circuit protection requirements.
• Dual-Element Class RK5 Design: Time-delay construction provides both overload and short-circuit protection for motor and general circuits.
• Ferrule End x Ferrule End: Standard ferrule terminations for compatibility with common fuse blocks and holders.
• Non-Indicating Operation: Standard, non-indicating fuse body for straightforward installation.
• Dual Voltage Rating: Rated 600 VAC and 300 VDC for use across AC and DC circuit applications.
• High Interrupt Rating: 200 kAIC at 600 VAC and 20 kAIC at 300 VDC for demanding, high fault-current environments.
• Time-Delay Characteristic: Opens in 10 seconds at 500% of rated current, resisting nuisance opening from temporary inrush or overload.
• Standard Series: Part of the Eaton Bussmann FRS-R standard dual-element fuse series.

Certifications & Compliance

• CE Marked

Technical Specifications

• Compliances: CE Marked
• Voltage Rating: 600 Vac, 300 Vdc
• Interrupt Rating: 200 kAIC at 600 Vac

Typical Applications

• Motor Circuit Overload and Short-Circuit Protection
• Branch Circuit and Feeder Protection
• Industrial Control Panels and Machinery
• DC Circuit Protection in Solar and Battery Systems
• Panelboard and Fuse Block Installations

Why Bussmann?

Bussmann fuses from Eaton are engineered to Class RK5 standards and CE marked for verified performance, giving electrical professionals a dependable, code-compliant option for circuit protection. The FRS-R Series' dual-element, time-delay design and dual 600 VAC/300 VDC rating make it a versatile choice for both AC and DC applications where reliable, high-interrupt-rating protection is required.