The Bussmann BP/FRN‑R‑25 is a FUSETRON® Series Class RK5 time‑delay, current‑limiting cartridge fuse engineered to provide reliable overcurrent protection for AC power circuits supplying motors, transformers, and other inductive loads. Manufactured by Bussmann (Eaton), this fuse is designed for commercial and industrial environments that require dependable time‑delay performance combined with high interrupt capacity and improved system safety.

Utilizing a dual‑element time‑delay design, the BP/FRN‑R‑25 allows normal motor starting currents and short‑duration inrush conditions to pass without nuisance opening. When abnormal overloads or short‑circuit conditions occur, the fuse responds rapidly and predictably to clear the fault, helping protect conductors, components, and connected equipment from damage.

As part of the FUSETRON® family, the BP/FRN‑R‑25 delivers current‑limiting protection, significantly reducing let‑through energy during high‑fault events. This helps minimize thermal and mechanical stress on downstream equipment and improves overall electrical system protection. Its Class RK5 rejection‑type construction further enhances safety by helping prevent the installation of lower‑rated or non‑current‑limiting fuses.

Packaged in a 2‑count retail card, the BP/FRN‑R‑25 is well‑suited for maintenance inventories, retrofit upgrades, and service replacement applications in branch‑circuit and motor‑circuit installations.

Key Features

• Dual‑element time‑delay design allows motor startup and temporary inrush currents
• Current‑limiting performance reduces damage during high‑fault conditions
• Class RK5 rejection‑type construction helps prevent improper fuse replacement
• Designed for branch‑circuit and motor circuit protection
• High interrupt capacity for commercial and industrial power systems
• Predictable, coordinated protection for inductive AC loads
• Compact cartridge design fits standard Class RK5 fuse holders
• Retail blister packaging for convenient handling and inventory control

Specifications

• Manufacturer: Bussmann (Eaton)
• Series: FUSETRON® FRN‑R
• Model Number: BP/FRN‑R‑25
• Fuse Type: Time‑Delay / Dual‑Element, Current‑Limiting
• Current Rating: 25 Amps
• Voltage Rating: 250 VAC
• Fuse Class: Class RK5 (Rejection Type)
• Interrupt Rating:
  • 200,000 amps (200 kA) at rated voltage
• Body Style: Cartridge fuse
• Mounting Style: Fuse holder or clip
• Indication: Non‑indicating
• Packaging: 2 fuses per card
• Certifications: UL Listed, CSA Certified
• Application Category: Branch‑circuit and motor circuit protection

Applications

• Motor branch circuits
• Motor starters and motor control centers
• Transformers and inductive loads
• Industrial control panels
• HVAC equipment and systems
• Commercial and industrial power distribution
• OEM electrical equipment
• Maintenance, service, and retrofit installations