The Bussmann BP/FRN-R-20 is a time-delay cartridge fuse engineered to protect motors and heavy-duty electrical circuits from overload, ground fault, and short-circuit damage. This 20-amp, 250-volt fuse is designed for motor circuits, transformers, and demanding industrial and commercial installations where temporary current surges are common. The time-delay (slow-blow) characteristic allows brief surge currents to pass through without interrupting normal operation, reducing nuisance trips while still safeguarding against sustained overloads and preventing equipment burnout.
A key advantage of this fuse is its ability to hold an overload five times greater than its 20-amp rating for a minimum of ten seconds, making it ideal for applications where motors draw higher starting currents. It also protects against single phasing on three-phase systems, a condition that can cause motor burnout if left unaddressed. The two-pack ensures you have a spare fuse on hand for quick replacements, minimizing downtime in critical power circuits.
Features and Benefits
- 20-Amp Rating: Provides precise protection for motor circuits, transformers, and other heavy-duty loads requiring steady current control.
- Time-Delay Design: Tolerates temporary overloads and starting surges while still protecting against sustained overcurrent, reducing false trips.
- 250V / 125V DC Rating: Compatible with low-voltage industrial, commercial, and residential electrical systems.
- Motor Overload Protection: Helps prevent motor burnout from overloads and single phasing on three-phase systems.
- Compact Cartridge Form: Fits standard FRN-R fuse holders and panels, simplifying installation and space management.
- Trusted Quality: UL listed and CSA certified, backed by Bussmann’s reputation for durability and consistent performance.
- Two-Pack Convenience: Includes spare fuse for quick service calls and equipment maintenance.
Specifications
- Brand: Bussmann
- Model: BP/FRN-R-20
- Amperage: 20A
- Voltage: 250V AC / 125V DC
- Interrupt Rating: 200 kA
- Time-Delay: Holds 5× ampere rating for minimum 10 seconds
- Body Material: Fiberglass
- Certifications: UL listed, CSA certified
- Count: 2 fuses per package
