Cooper Bussmann LPN-RK-30SP RK1 Time Delay Fuse 30A

Product Description

The COOPER BUSSMANN LPN-RK-30SP is a cartridge-style, time-delay fuse rated at 30 amps and classified as an RK1 fuse. It is designed for general-purpose overcurrent protection in industrial control panels, motor circuits, and commercial electrical distribution equipment. The dual-element construction provides reliable time-delay characteristics, allowing the fuse to withstand harmless inrush current while responding quickly to sustained overloads and short circuits. It measures 2 inches in overall length and 14.3 mm in diameter. Interrupt ratings reach 100 kA at DC and 300 kA at AC (RMS), making it suitable for demanding high-fault-current environments. Licensed electricians and industrial maintenance technicians are the primary installers.

The LPN-RK-30SP is applied in fused disconnect switches, motor branch circuit protection, and panelboard installations where an RK1-class, time-delay cartridge fuse is specified. Its dual-element design suits motor loads that draw significant inrush current at startup. It fits standard Class RK1 fuse holders and blocks rated for the cartridge body dimensions. This fuse is used in both commercial and light industrial settings wherever code calls for a 30-amp time-delay overcurrent device.

Key Features

• RK1 fuse class with dual-element, time-delay design for motor and transformer protection
• 30-amp continuous current rating
• High interrupt capacity: 100 kA at DC and 300 kA at AC (RMS)
• Cartridge body measuring 2 inches in length and 14.3 mm in diameter
• Non-indicating construction for standard fuse holder mounting
• CE Certified, CSA C22.2 No. 248.12 certified, and UL Listed (Guide JDDZ File E4273)

Compatibility

Designed for use in Class RK1 fuse holders and fusible disconnect blocks that accept cartridge fuses measuring 2 inches in overall length and 14.3 mm in diameter.

Installation Notes

Installation must be performed by a licensed electrician in compliance with applicable NEC requirements for overcurrent protection. Always de-energize and lock out the circuit before removing or installing a fuse. Verify that the fuse holder is rated for Class RK1 and matches the voltage and amperage of this fuse before installation. Do not substitute a standard non-time-delay fuse in motor circuits where the dual-element characteristic is required by the circuit design.