Frn-r Series Bp/frnr-40id Heavy-duty Fuse, 40 A, 250 Vac, 125 Vdc, 20, 200 Ka Interrupt, Fiberglass Body, K

Bussmann Fusetron cartridge fuses are dual-element, time-delay fuses designed to protect electrical circuits in residential and commercial applications. These Class RK5 current-limiting fuses combine superior overcurrent protection with the ability to tolerate brief inrush currents typical of motor startup, making them ideal for circuits serving motors, transformers, and other inductive loads.

The time-delay feature allows the initial surge of current when equipment first energizes to pass through safely, while still opening quickly if dangerous, sustained overloads develop. An indicating label on the fuse darkens visibly when the fuse has opened, providing clear confirmation that protection has been activated. With a 200 kA interrupting rating at 250 VAC, these fuses deliver reliable circuit protection across a broad range of electrical applications.

Features and Benefits

• Dual-Element Design: The dual element feature allows closer sizing to load for superior protection of motors and transformers.
• Time-Delay Performance: Permits brief inrush currents during equipment startup while protecting against sustained overloads and preventing motor burnout.
• Class RK5 Current-Limiting Protection: Provides enhanced protection for sensitive electrical equipment and delicate circuitry in modern installations.
• Visual Indication: The fuse label darkens when opened, offering immediate confirmation that the fuse has blown without requiring additional testing.
• 23% More Energy Efficient: Engineered to reduce energy waste compared to standard fuses.
• Broad Application Range: Suitable for use in AC power distribution system mains, feeders and branch circuits, motors and motor branch circuits, transformers, and non-inductive loads including lighting and heating.

Specifications

• Brand: Bussmann
• Model: BP/FRN-R-40ID
• Pack Quantity: 2
• Amperage Rating: 40 Amp
• Voltage Rating: 250 VAC / 125 VDC
• Interrupting Rating: 200 kA at 250 VAC, 20 kA at 125 VDC
• Fuse Type: Dual-element, time-delay cartridge fuse (Fusetron)
• Current-Limiting Class: RK5
• Dimensions: 2.375"L x 1.375"W x 0.25"H
• Certification: UL listed

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.