The Bussmann Fusetron FRN-R-40 is a dual-element, time-delay Class RK5 fuse rated at 40 amps for 250 VAC and 125 VDC service. Its current-limiting design minimizes peak let-through energy during faults while the time-delay element tolerates temporary inrush currents, making it suitable for motor circuits and industrial control panels. Rejection-style construction helps prevent incorrect substitutions. Packaged as a single unit under part number CSIFRN-R-40 with a gross weight of approximately 1 lb.
40 amp rating for reliable circuit protection in 250 VAC and 125 VDC systems
Dual-element, time-delay design tolerates temporary inrush currents while protecting against sustained overloads
Current-limiting performance reduces peak let-through energy during fault conditions
Class RK5 compact footprint delivers high interrupting capacity in a space-saving package
Rejection-style body helps prevent incorrect fuse substitutions at replacement
Single-pack unit with manufacturer part number CSIFRN-R-40 for accurate ordering.
Designed for industrial and commercial use in motor circuits, control panels, and branch-circuit protection.
Fusetron series by Bussmann provides dependable overcurrent protection with time-delay characteristics.
Package quantity: 1; gross weight approximately 1 lb and packaged for easy installation.