Bussmann LPN-RK Series Low-Peak Dual-Element Time-Delay Fuse, Class RK1

Bussmann LPN-RK Series Low-Peak Dual-Element Time-Delay Fuse, Class RK1

The Bussmann LPN-RK Series Low-Peak fuse is a current-limiting, dual-element time-delay fuse from Eaton, engineered for reliable overcurrent protection in commercial and industrial electrical systems. Rated 250 Vac and 250 Vdc with an interrupting rating of 300 kAIC at 250 Vac and 100 kAIC at 250 Vdc, this Class RK1 fuse features an electrically isolated end cap and a 10-second time delay at 500% of rated current for motor and inrush-load applications. The LPN-RK Series is available in amp ratings from 35A to 250A, including 35A, 40A, 50A, 80A, 110A, 125A, 175A, 200A, and 250A, so you can match the exact rating your circuit requires.

Key Features

• Amp Rating Range: Available from 35A to 250A (35A, 40A, 50A, 80A, 110A, 125A, 175A, 200A, 250A) to match specific circuit requirements.
• Dual-Element Time Delay: 10 seconds at 500% of rated current allows motor and inrush loads to start without nuisance opening.
• Current-Limiting Class RK1: Low-Peak design limits let-through energy to help protect downstream equipment and conductors.
• High Interrupting Rating: 300 kAIC at 250 Vac and 100 kAIC at 250 Vdc for dependable performance under high fault-current conditions.
• Voltage Rating: 250 Vac / 250 Vdc for use in standard commercial and industrial distribution systems.
• Electrically Isolated End Cap: Helps reduce the risk of arcing or ground fault at the fuse terminals.
• Open Fuse Indicator: Provides a visual cue for quick identification of an opened fuse during troubleshooting.

Technical Specifications

• Packaging Type: Standard
• Fuse Indicator: Non-indicating
• Fuse Class: RK1
• Time Delay: 10s at 500% of rated current
• Package Quantity: 10 units
• Amp Rating Options: 35A, 40A, 50A, 80A, 110A, 125A, 175A, 200A, 250A

Typical Applications

• Motor Circuit Overcurrent Protection
• Commercial and Industrial Electrical Panels
• Feeder and Branch Circuit Protection
• Switchboard and Equipment Protection
• Renovation and New Construction Electrical Systems

Why Bussmann?

Bussmann by Eaton is a trusted name in circuit protection, and the LPN-RK Series Low-Peak fuse reflects that reliability with its dual-element time-delay design, high interrupting ratings, and current-limiting Class RK1 construction. Electrical professionals specify Bussmann LPN-RK fuses for dependable, current-limiting overcurrent protection across a wide range of amp ratings, from motor circuits to feeder and branch-circuit applications.