Bussmann BPFRN-R Class RK5 Time-Delay Cartridge Fuse

Bussmann BPFRN-R Class RK5 Time-Delay Cartridge Fuse

The Bussmann BPFRN-R is a Class RK5 time-delay, current-limiting cartridge fuse family available in 15A and 45A ratings, engineered to protect motors, control circuits, and branch circuits from sustained overloads and short-circuit faults. Every rating in the family shares a ferrule end x ferrule end connection that fits standard ferrule-type fuse blocks, fuse holders, and disconnect switches, along with a 200 kAIC Vac / 20 kAIC Vdc interrupt rating and an 8-second response time at 500% of rated current, so the fuse rides through normal motor-starting inrush while clearing genuine fault currents quickly. This non-indicating fuse family is suited to combination starters, motor control centers, machinery disconnects, and power panelboards.

Key Features

• Amperage Ratings: Available in 15A and 45A ratings for branch-circuit and motor-circuit overcurrent protection.
• Class RK5 Design: Meets Class RK5 fuse specifications for dimensional and performance interchangeability with other RK5 devices.
• Time-Delay, Current-Limiting Operation: Rides through motor starting inrush while limiting let-through current during a fault condition.
• Ferrule End x Ferrule End Connection: Fits standard ferrule-type fuse blocks, fuse holders, and disconnect switches.
• Interrupt Rating: 200 kAIC Vac, 20 kAIC Vdc for high fault-current withstand capability in demanding circuits.
• Response Time: Opens in 8 seconds at 500% of rated current for predictable, repeatable overload protection.
• Non-Indicating Body: Standard non-indicating construction with a Standard packaging type for straightforward installation and replacement.

Technical Specifications

• Product Details: Time delay, current limiting
• Product Type: Time delay, current limiting
• Fuse Indicator: Non Indicating

Typical Applications

• Combination Starters
• Motor Control Centers
• Machinery Disconnects
• Power Panelboards
• Branch-Circuit Overcurrent Protection

Why Bussmann?

Bussmann fuses are engineered to Class RK5 specifications, combining time-delay motor-starting tolerance with current-limiting fault protection for demanding industrial and commercial environments. The BPFRN-R family's ferrule end x ferrule end connection, 200 kAIC Vac interrupt rating, and defined 8-second response time at 500% of rated current make it a dependable choice across both the 15A and 45A ratings for engineers and electricians who need consistent, code-compliant overcurrent protection in motor control and power distribution equipment.