Bussmann BP/FRS-R-15 15 Amp Fusetron Dual Element Time-Delay Current Limiting Class Rk5 Fuse 600V Ul Listed, Carded Separate overload and short-circuit elements provide time delay for sizing as close as 125% of motor fla. 2:1 selective coordination amp ratio (within the Cooper Bussmann Rk5 fuse family) prevents overcurrent events from opening upstream fusetron fuses. Insulated end caps for 225a-600a fuses reduces exposure to live parts and extends air gap to distance between blades of adjacent mounted fuses or to housing. Easy Upgrade for one-time and renewable fuses installations. Because the fusetron class Rk5 fuses fit any class K5 or h fuse blocks and holders, you now have the opportunity to Upgrade your circuit protection and save even more. Cartridge fuses are used to protect Motors and branch circuits where higher amps or volt ratings are required. They are available in a wide variety of sizes, amp and volt ratings up to 600VAC and 600 amps. Cartridge fuses are used extensively in commercial, industrial and agricultural applications as well as residential fuse panels, air conditioning, pumps, appliances and other equipment. Cartridge fuses are available in two types. General purpose fuses have no time-delay and protect fuse panels, appliances and branch circuits. Heavy- duty fuses have a time-delay feature, allowing momentary motor startups. Both are available in 250VAC and 600VAC versions with catalog symbol and amp rating stamped on the knife blade or end cap. Features Time-delay ? 10 second (minimum) at 500% of rated current Dimensions: 0.81? x 5? Ce, UL listed, std. 248-12, class Rk5, guide jddz, file E4273, csa certified, C22.2 no. 248.12, class 1422-02, file 53787, CE Dual-element feature provides the best time-delay performance, allowing closer sizing and superior protection of motors and Transformers Quantity per card: 1 USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.