Bussmann FRS-R-17-1/2 Fusetron Dual-Element Time-Delay Fuse, Class RK5The Bussmann FRS-R-17-1/2 Fusetron dual-element time-delay fuse is engineered for reliable overcurrent protection in demanding industrial power systems. Rated 17-1/2A with a dual voltage rating of 600 Vac and 300 Vdc, this Class RK5 fuse features a ferrule end x ferrule end connection for straightforward installation in standard fuse holders and switches. With a high interrupt rating of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc, it delivers current-limiting performance to protect combination starters, motor control centers, machinery disconnects, and power panelboards from damaging fault currents.Key FeaturesAmperage Rating: Rated 17-1/2A for precise circuit-level overcurrent protection in motor and equipment circuits.Dual-Element Time-Delay Design: Dual elements deliver a 10s at 500% response time, riding through normal motor starting inrush while still tripping fast on true overloads.Class RK5 Construction: Class RK5 current-limiting, time-delay design suited for combination starters and motor control equipment.Connection Type: Ferrule end x ferrule end connection for compatible mounting in standard fuse blocks and disconnects.Voltage Rating: Dual-rated 600 Vac and 300 Vdc for flexibility across AC and DC circuit applications.Interrupt Rating: High 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc interrupt rating for safe operation under high fault-current conditions.Fuse Indicator: Non-indicating design keeps the fuse body compact and free of blown-fuse indication hardware.Compact Sizing: Compact .81 IN diameter x 5 IN length body at just .15 LB for space-conscious panel and enclosure layouts.Technical SpecificationsAmperage Rating: 17-1/2AApplication: Combination starters, motor control centers, machinery disconnects, power panelboardsClass: Class RK5Connection: Ferrule end X ferrule endFuse Indicator: Non IndicatingInterrupt Rating: 200 kAIC at 600 Vac, 20 kAIC at 300 VdcNumber Of Elements: DualPackaging Type: StandardResponse Time: 10s at 500%Voltage Rating: 600 Vac, 300 VdcProduct Type: Current-limiting, time delayProduct Length: .81 INProduct Details: Current-limiting, time delayProduct Diameter: .81 INProduct Height: 5 INProduct Weight: .15 LBProduct Width: .81 INTypical ApplicationsCombination StartersMotor Control CentersMachinery DisconnectsPower PanelboardsWhy Bussmann?Bussmann fuses are built for dependable, code-compliant overcurrent protection in demanding electrical systems. The FRS-R-17-1/2 Fusetron’s dual-element time-delay design, Class RK5 construction, and high 200 kAIC interrupt rating make it a trusted choice for combination starters, motor control centers, and power panelboards where reliable protection is critical. Choose Bussmann for consistent, code-compliant performance electricians and engineers can count on.