Bussmann Bp/frn-r-25 Time-delay Cartridge Fuse, 25a, 250v, 2-pk.

The Bussmann BP/FRN-R-25 is a time-delay cartridge fuse designed to protect motors, transformers, and control circuits from dangerous electrical overloads. This Class RK5 fuse combines dual-element construction with delayed-blow technology, allowing brief inrush currents during motor startup while blocking sustained overloads that could cause burnout or equipment damage.

Time-delay fuses reduce nuisance trips caused by normal startup surges, keeping critical equipment running longer and minimizing downtime. The FRN-R design lets you size fuses closer to actual load requirements, delivering superior protection without interrupting normal operation. This two-pack of compact cartridges is ideal for electrical panels, HVAC systems, industrial machinery, and any installation requiring reliable overcurrent protection in standard low-voltage distribution networks.

Features and Benefits

• Time-delay performance: The dual-element FRN-R design tolerates temporary inrush currents from motor startup, preventing premature failure while opening during dangerous sustained overloads.
• Class RK5 rated: Meets UL RK5 testing standards and delivers a 200 kA interrupting rating at 250 VAC and 20 kA at 125 VDC for broad application compatibility.
• Motor protection: When sized correctly, the time-delay feature helps protect motors from burnout caused by overloads or single phasing.
• Compact cartridge form: Two fuses fit tightly into DIN rail or panelboard slots, maximizing space efficiency in crowded enclosures.
• Convenient two-pack: Securely carded together for easy handling, inventory tracking, and quick installation during maintenance or troubleshooting.

Specifications

• Brand: Bussmann
• Model: BP/FRN-R-25
• Amperage: 25 A
• Voltage rating: 250 VAC, 125 VDC
• Interrupt rating: 200 kA at 250 VAC; 20 kA at 125 VDC
• Fuse type: FRN-R time-delay cartridge
• Class: RK5
• Pack quantity: 2