Cartridge Fuse, 30A 250V Class RK5 Dual-Element Time-Delay Motor Protection Fuse - Bussmann FRN-R-30
Cartridge Fuse, 30A 250V Class RK5 Dual-Element Time-Delay Motor Protection Fuse - Bussmann FRN-R-30
A time-delay cartridge fuse allows normal motor starting current to pass while protecting compatible circuits from sustained overloads and short circuits. This Bussmann FRN-R-30 is a 30-amp, 250-volt Class RK5 dual-element fuse for motor control centers, panelboards, starters, machinery disconnects, pumps, air-conditioning equipment and other correctly designed circuits.
The current-limiting fuse is UL listed and CSA certified, measures 2 x 0.56 x 0.56 inches and uses a fiberglass tube with brass end caps. The delay is listed at a minimum of ten seconds at 500% rated current, while severe short-circuit conditions can open the dual element much faster. Replacement must match the equipment class, voltage, ampere rating and interrupting requirements. De-energize, verify and follow qualified electrical service procedures.
Specifications
- Brand: Bussmann
- Product: Dual-element time-delay cartridge fuse
- Series: Fusetron FRN
- Model: BP-FRN-R-30
- Catalog number: FRN-R-30
- Current rating: 30A
- Voltage rating: 250V
- Fuse class: RK5
- Action: Time delay
- Elements: Dual element
- Current limiting: Yes
- Dimensions: 2 x 0.56 x 0.56 inches
- Tube: Fiberglass
- End caps: Brass
- Certifications: UL listed and CSA certified
- Pack quantity: 1
Frequently Asked Questions
What circuits use an FRN-R-30 fuse?
It is intended for compatible 30A 250V Class RK5 motor and branch circuits designed for a dual-element time-delay fuse.
Why does the fuse have a time delay?
The delay allows typical temporary motor-starting current while still opening during sustained overload or short-circuit conditions.
Can I replace it with any 30A cartridge fuse?
No. Fuse class voltage interrupting rating dimensions and equipment requirements must all match.
What should be done before replacement?
De-energize and verify the circuit and use qualified electrical service procedures and protective equipment.