Cooper Bussmann LPN-RK-10SP RK1 Time Delay Fuse 10A

Product Description

The COOPER BUSSMANN LPN-RK-10SP is a Class RK1 cartridge-style time delay fuse rated at 10 amps. It is designed for general-purpose overcurrent protection in branch circuits, motor circuits, and control panels where a time delay characteristic is required to ride through inrush currents without nuisance tripping. The fuse body measures 2 inches in overall length and 14.3 millimeters in diameter, fitting standard RK1-rated fuse holders. With an interrupting rating of 100 kiloamperes at DC and 300 kiloamperes at AC (RMS), it provides robust fault-current protection. Licensed electricians and industrial maintenance technicians are the primary installers of this component.

This fuse is suited for residential, commercial, and light industrial electrical systems where Class RK1 time delay protection is specified. Common applications include motor branch circuit protection, transformer primary circuits, and control panel feeder protection. The dual-element, non-indicating design allows the fuse to tolerate short-duration overloads while still opening quickly under true short-circuit conditions. It mounts in a standard fuse holder sized for RK1 cartridge fuses.

Key Features

• Class RK1 time delay dual-element cartridge fuse for general-purpose overcurrent protection
• 10-amp rating with time delay characteristic to handle motor inrush and startup loads
• High interrupting capacity: 100 kA at DC and 300 kA at AC (RMS)
• Non-indicating design with cartridge body measuring 2 inches OAL and 14.3 millimeters in diameter
• CE Certified, CSA Certified (C22.2 No. 248.12), and UL Listed (Guide JDDZ File E4273)

Compatibility

Designed for use in standard RK1-rated fuse holders. No specific compatible model numbers or system families were identified in the available product data.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit before replacing or installing any fuse. Verify that the fuse holder is rated for Class RK1 cartridge fuses and is sized for 10-amp, 250-volt or lower-rated circuits as applicable. Do not substitute a different fuse class or amperage rating, as doing so may void equipment listings and compromise circuit protection.