Cooper Bussmann LPJ-1SP Class J Time Delay Fuse 1A

Product Description

The COOPER BUSSMANN LPJ-1SP is a Class J time delay cartridge fuse rated at 1 ampere, designed for general-purpose overcurrent protection in industrial and commercial electrical systems. This dual-element fuse tolerates temporary inrush currents without nuisance tripping while responding quickly to sustained fault conditions. It measures 2.25 inches in length and 0.811 inches in diameter, fitting standard Class J fuse holders. With an interrupt rating of 100 kA at DC and 300 kA at AC (RMS), it delivers high fault-current capacity appropriate for demanding service environments. Licensed electricians and electrical contractors are the primary installers.

The LPJ-1SP is suited for residential, commercial, and light industrial applications where Class J fuse holders are specified. It is commonly installed in motor control circuits, control panels, and equipment requiring time delay characteristics to ride through motor starting currents. The non-indicating body provides no visual fault signal, so panel labeling and documentation are important for maintenance identification. Its compact cartridge form drops directly into standard Class J fuse blocks and holders.

Key Features

• Class J time delay (dual-element) design tolerates startup inrush without nuisance opening
• 100 kA interrupt rating at DC and 300 kA interrupt rating at AC (RMS) for high-fault environments
• Cartridge body measures 2.25 inches long by 0.811 inches in diameter for standard Class J holders
• Non-indicating construction keeps profile low in compact panel installations
• UL Listed, CSA Certified, CE Certified, and RoHS Compliant for broad code acceptance

Compatibility

Designed as an OEM-style replacement for Class J fuse holder applications requiring a 1-ampere time delay cartridge fuse.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements for fuse replacement and panel service. Always de-energize and lock out the circuit before removing or installing fuses. Verify the fuse holder is rated for Class J cartridge fuses before installation. Do not substitute a different fuse class or ampere rating, as doing so may void equipment listings and create a safety hazard.