The Bussmann BP/FRN-R-45 is a time-delay cartridge fuse designed to provide motor overload, ground fault, and short-circuit protection in electrical systems. This fuse helps protect motors against burnout from overloads and single phasing on three-phase systems, making it essential for industrial machinery, commercial power distribution panels, HVAC systems, and other demanding applications where reliable circuit protection is critical.
The FRN-R time-delay characteristic allows temporary inrush currents to pass without nuisance tripping, reducing unwanted shutdowns during motor start-up. The fuse will hold an overload five times greater than its 45-amp rating for a minimum of ten seconds, protecting equipment while accommodating normal surge conditions. This engineered response protects critical equipment while minimizing downtime for electricians, maintenance teams, and system designers.
Features and Benefits
- 45-Amp Rating: Handles heavy-duty loads in industrial and commercial applications requiring strict amperage limits.
- Time-Delay Design: Allows temporary surges to pass without nuisance tripping, ideal for motor start-up conditions and inrush current protection.
- 250 VAC / 125 VDC Rating: Suitable for low-voltage networks commonly found in factories, commercial buildings, and HVAC systems.
- High Interrupt Rating: 200 kA VAC and 20 kA VDC interrupt capacity ensures reliable fault protection.
- Fiberglass Construction: Provides excellent insulation, strength, and durability for consistent performance.
- Compact Dimensions: Measures 2.375 in. × 1.375 in. × 0.50 in., fitting standard fuse holders and saving panel space.
- Two-Pack Quantity: Convenient packaging for easy inventory management and quick replacement.
Specifications
- Brand: Cooper Bussmann
- Model: BP/FRN-R-45
- Current Rating: 45 Amps
- Voltage: 250 VAC / 125 VDC maximum
- Interrupt Rating: 200 kA VAC, 20 kA VDC
- Fuse Type: FRN-R Time-Delay Cartridge
- Material: Fiberglass
- Dimensions: 2.375 in. L × 1.375 in. W × 0.50 in. H
- Quantity: 2-Pack
- Certifications: UL Listed, CSA Certified
