The Bussmann FRS-R-20 is a 20-amp, 600-volt, dual-element, time-delay Class RK5 fuse designed to provide reliable overcurrent protection in various industrial and commercial applications. Key Features Dual-Element Design: Combines overload and short-circuit protection, allowing the fuse to handle temporary motor overloads and surge currents effectively. Time-Delay Capability: Offers a minimum 10-second delay at 500% of the rated current, enabling the use of smaller fuse ratings compared to non-time-delay fuses. High Interrupting Rating: Capable of interrupting up to 200,000 amperes at 600 VAC and 20,000 amperes at 300 VDC, ensuring safety in high fault current scenarios. Current Limiting: Reduces the let-through energy during fault conditions, protecting downstream components from potential damage. Versatile Application: Suitable for use in combination starters, motor control centers, machinery disconnects, and power panelboards. Specifications Amperage Rating: 20 A Voltage Rating: 600 VAC / 300 VDC Interrupting Rating: 200 kA at 600 VAC; 20 kA at 300 VDC Response Time: 10 seconds at 500% of rated current Body Dimensions: 0.81 inches in diameter x 5 inches in length Material: Fiberglass body with ferrule terminals Certifications: UL 248-12, CSA C22.2 No. 248.12, CE Certified This box contains seven Bussmann FRS-R-20 fuses, ensuring you have adequate spares for maintenance and replacements. These fuses are engineered to provide dependable protection for your electrical systems, minimizing downtime and enhancing operational safety.