Cooper Bussmann LPJ-3-2/10SP Class J Fuse 3.2A

Product Description

The COOPER BUSSMANN LPJ-3-2/10SP is a Class J time delay cartridge fuse rated at 3.2 amps, designed for general purpose overcurrent protection in industrial and commercial electrical systems. The time delay characteristic allows the fuse to tolerate brief inrush currents without nuisance opening, while still providing reliable fault protection. The cartridge body measures 20.6 mm in diameter and 57.2 mm (2-1/4 inches) in overall length. It carries an interrupting rating of 100 kA at DC and 300 kA at AC (RMS), making it suitable for demanding applications where high available fault currents are present. Licensed electricians and electrical maintenance technicians are the primary installers.

This fuse is appropriate for use in residential, commercial, and light industrial electrical panels, control circuits, and motor branch circuits where Class J fusing is specified. The two-element design supports time delay operation and mounts via a standard fuse holder. It is a non-indicating type, meaning no external visual signal is provided upon opening. Applications include control panel protection, HVAC equipment branch circuits, and general-purpose feeder protection where Class J fuse holders are already installed.

Key Features

• Class J time delay cartridge fuse rated at 3.2 amps
• High interrupting capacity: 100 kA at DC, 300 kA at AC (RMS)
• Two-element design supports inrush tolerance without nuisance tripping
• Non-indicating fuse body for straightforward fuse holder installation
• Compliant with UL, CSA, CE, and RoHS standards
• Compact cartridge form: 20.6 mm diameter, 2-1/4 inches overall length

Compatibility

Designed for use with standard Class J fuse holders. Verify that the fuse holder is rated for Class J fuses and is appropriate for the circuit voltage and amperage before installation.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before replacing a fuse. Use an insulated fuse puller rated for the voltage class when removing or inserting cartridge fuses. Confirm that the replacement fuse amperage and class match the circuit's original specification before energizing.