Cooper Bussmann LPJ-5SP Time Delay Fuse 5A Class J

Product Description

The COOPER BUSSMANN LPJ-5SP is a Class J time delay cartridge fuse rated at 5 amps, designed for general-purpose overcurrent protection in industrial and commercial electrical systems. With an interrupting rating of 100 kA at DC and 300 kA at AC (RMS), this fuse provides high fault-current capacity in a compact form factor. The cartridge body measures 2.25 inches in length and 20.6 mm in diameter. It features a two-element design that allows brief inrush currents to pass without nuisance tripping while still providing reliable protection against sustained overloads. Licensed electricians and maintenance technicians install this fuse in Class J fuse holders across a wide range of panel and equipment applications.

The LPJ-5SP is suited for general-purpose overcurrent protection in commercial and light industrial environments. Its Class J rating makes it appropriate for use in motor circuits, control panels, and equipment where time delay characteristics are required to accommodate motor starting inrush. The non-indicating design keeps the form factor simple, and the cartridge style integrates directly into standard Class J fuse holders without modification.

Key Features

• 5 amp rating with time delay response for inrush-tolerant protection
• High interrupting rating: 100 kA at DC, 300 kA at AC (RMS)
• Class J cartridge form factor, 2.25 inches long by 20.6 mm diameter
• Two-element construction for reliable time delay performance
• Non-indicating design for clean panel integration
• CE Certified, CSA Certified, UL Listed, and RoHS Compliant

Compatibility

Designed for use in Class J fuse holders as an OEM-style or replacement time delay fuse for general-purpose overcurrent protection applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and verify zero voltage on the circuit before removing or installing any fuse. Use appropriately rated Class J fuse holders only — do not install Class J fuses in holders rated for other fuse classes. Confirm the replacement fuse matches the circuit amperage and interrupting requirements before energizing.