Littelfuse 0JTD025.TXID Class J Time Delay Fuse 25A

Product Description

The LITTELFUSE 0JTD025.TXID is a Class J time delay cartridge fuse rated at 25 amps, designed for general-purpose overcurrent protection in demanding electrical distribution applications. Built with a melamine body, this fuse provides reliable protection against sustained overloads while tolerating harmless inrush currents that would trip a fast-acting fuse. It carries an interrupting rating of 20 kA at DC and 200/300 kA at AC, making it suitable for high-fault-current environments. Electricians and industrial maintenance technicians install this fuse in fused disconnect switches, panelboards, and motor branch circuits where Class J rejection is required.

This fuse is used in residential, commercial, and light industrial electrical systems where Class J fuse holders are specified. The time delay characteristic makes it well suited for motor loads, transformer primaries, and other circuits with high startup inrush. Its cartridge form factor fits standard Class J fuse blocks and disconnect switches. The indicating feature signals an open fuse condition, simplifying troubleshooting during maintenance service calls.

Key Features

• Class J time delay cartridge fuse rated at 25 amps
• High interrupting rating: 20 kA at DC and 200/300 kA at AC
• Melamine fuse body for durability in high-fault environments
• Indicating design signals blown fuse condition visually
• Overall length of 2.25 inches and overall diameter of 0.8125 inches for Class J form factor fitment
• Listed to UL 248-8 and CSA File LR29862

Compatibility

Designed as an OEM-style replacement for Class J fuse holders, fused disconnects, and panelboard fuse blocks that accept 25-amp time delay cartridge fuses with a Class J rejection feature.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC Article 240 and applicable local codes. Always de-energize and lock out the circuit before removing or installing fuses. Use an insulated fuse puller rated for the voltage and current of the circuit. Verify the fuse holder is rated for Class J fuses before installation to ensure proper rejection fitment.