Bussmann's UL Class RK1 fuse offering includes the industry's most recognized Low-Peak dual-element, current-limiting, time-delay fuses (LPN-RK and LPS-RK) which are also available with optional indication on select ratings (see product data sheet). Complementing the Low-Peak product offering is Bussmann's Limitron family of fast-acting fuses (KTN-R, KTS-R, KWN-R and KWS-R) fuses.