Littelfuse 0JTD020.TXID Class J Time Delay Fuse 20A

Product Description

The LITTELFUSE 0JTD020.TXID is a Class J time-delay cartridge fuse rated at 20 amps for use in industrial and commercial electrical distribution systems. It carries an interrupting rating of 200/300 kA at AC and 20 kA at DC, making it suitable for high-fault-current environments where reliable overcurrent protection is required. The fuse body is constructed from melamine and features an indicating function that signals when the fuse has opened. Licensed electricians and electrical contractors install this type of fuse in motor control centers, panel boards, and disconnect switches where Class J fusing is specified.

This fuse is designed for general-purpose overcurrent protection in demanding electrical installations. Class J fuses are commonly specified in commercial and light industrial settings where high interrupting capacity and time-delay characteristics are required to handle motor inrush currents without nuisance opening. The time-delay design allows temporary overloads typical of motor starting while still responding quickly to sustained fault conditions. The indicating feature assists technicians in quickly identifying blown fuses during troubleshooting and maintenance.

Key Features

• Class J time-delay design handles motor inrush without nuisance tripping
• High interrupting rating of 200/300 kA at AC and 20 kA at DC
• Indicating function signals fuse-open condition for faster diagnostics
• Melamine fuse body construction for durability in service environments
• UL Listed and CSA Certified per UL 248-8 and CSA File LR29862

Compatibility

Designed as an OEM-style replacement or direct installation fuse for Class J fuse holders and disconnect switches rated for 20-amp, time-delay cartridge fuses in commercial and industrial electrical systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Disconnect and lock out all power to the fuse holder or disconnect switch before removing or installing this fuse. Verify that the fuse holder is rated for Class J cartridge fuses and that the circuit voltage and amperage align with the fuse ratings before energizing. Do not install this fuse in a holder that is damaged, corroded, or not rated for Class J fuses.