Mar 30, 2025 · Bussmann's UL Class RK5 Fusetron product offering provides energy efficient advanced protection with its dual-element, time-delay construction and is available with optional open fuse indication on select ratings.

Littelfuse offers five series of current-limiting Class RK5 fuses for superior short-circuit protection. Each boasts dual-element design and time-delayed performance that eliminates nuisance opening. Fuses in FLSR_ID also have built-in blown-fuse indicators.

• Class RK5 fuses with a 200 kA interrupting rat-ing for use in a broad range of applications • Provides motor overload, ground fault, and short-circuit protection • Helps protect motors against burnout from overloads and single-phasing when sized prop-erly • Dual-element fuses can be applied in circuits

Choose from our selection of fast-acting glass-tube fuses, UL Class RK5 fuses, time-delay glass-tube fuses, and more. Same and Next Day Delivery.

The Cooper Bussmann FRS Series 30 Amp Brass Cartridge Fuse is a dual-element fuse with time delay. This class RK5 cartridge is intended to be used with current-limiting applications at 10 seconds (minimum) at 500% the rated amps. The fuse is …

Also called slow-blow Class RK5 fuses, these 200kA IR fuses open to disconnect an electrical circuit when exposed to sustained loads and short circuits. They have a visual indicator to make it easier to identify blown fuses for replacement.

A UL Class RK5 fuse is a current limiting time delay fuse that is rated to interrupt a minimum of 200,000 amps. The UL Class RK5 fuse is less expensive but less current limiting than the Class RK1 fuse.

Bussmann's UL Class RK5 Fusetron product offering provides energy efficient advanced protection with its dual-element, time-delay construction and is available with optional open fuse indication on select ratings.

Tri-Onic TR-R current-limiting time-delay fuses are engineered for overcurrent protection of motors, transformers, service entrance equipment, feeders and branch-circuits. The time-delay characteristics of the TR-R safely handle harmless starting currents and inrush currents associated with today's motors and transformers.

Eaton Bussmann® series advanced protection, energy efficient FRN-R Class RK5 dual element, current-limiting, time-delay fuses with optional open fuse indication on select ratings. Time-delay. – 10 seconds (minimum) at 500% of rated current (8 seconds for 1⁄10-30A sizes). * Open fuse indication available by inserting the sufix “ID.”