Cooper Bussmann FRS-R-4/10 0.4A 600VAC

The Cooper Bussmann FRS-R-4/10 is a 0.4 amp, 600 VAC, Class RK5 dual-element time-delay fuse designed for reliable overcurrent protection in various industrial applications.

Key Features

• Amperage Rating: 0.4 A
• Voltage Rating: 600 VAC / 300 VDC
• Interrupting Rating: 200,000 AIC at 600 VAC; 20,000 AIC at 300 VDC
• Class: RK5
• Time-Delay: 10 seconds at 500% of rated current
• Construction: Dual-element, current-limiting
• Body Material: Fiberglass
• Dimensions: 0.81 inches in diameter x 5 inches in length

Applications

This fuse is suitable for use in combination starters, motor control centers, machinery disconnects, and power panelboards. Its time-delay feature allows it to handle temporary motor overloads and surge currents, providing both high-performance short-circuit and overload protection. ([shop.kendallelectric.com](https://shop.kendallelectric.com/buy/product/frsr4-10-buss-600v-fuse-trs-4-10r/21758?utm_source=openai))

Compliance and Certifications

• UL Listed, Class RK5, Guide JDDZ, File E4273
• CSA Certified, Class 1422-01, File 53787

The FRS-R-4/10 fuse’s dual-element design ensures superior protection for motors and transformers, allowing for closer sizing and enhanced safety in electrical systems. ([shop.kendallelectric.com](https://shop.kendallelectric.com/buy/product/frsr4-10-buss-600v-fuse-trs-4-10r/21758?utm_source=openai))