Littelfuse JTD600 Class J Fuse – 600A – 600V Time-Delay Fuse

The Littelfuse JTD600 is a 600 Amp Class J time-delay fuse designed for high-capacity industrial power distribution systems. As part of the JTD POWR-PRO® series, it provides dependable overcurrent and short-circuit protection while allowing temporary inrush currents from motors, transformers, and other inductive loads without nuisance opening. Its current-limiting design helps reduce fault energy and improves downstream equipment protection in demanding electrical environments.

Electrical Rating

• Current Rating: 600 Amps
• Maximum AC Voltage: 600 VAC
• Maximum DC Voltage: 500 VDC
• Interrupting Rating:
  • 200 kA AC
  • 20 kA DC @ 500 VDC

Key Specifications

• Manufacturer: Littelfuse
• Catalog Number: JTD600
• Series: JTD
• Fuse Class: Class J
• Construction Type: Knife-Blade
• Fuse Type: Time-Delay (Slo-Blo)
• Family: POWR-PRO® Fuse
• Indicating: No

Protection Characteristics

• Time-delay operation allows motor and transformer inrush currents
• Reliable overload and short-circuit protection
• Reduces nuisance fuse operation in inductive load circuits
• Current-limiting performance minimizes let-through energy during faults
• High interrupting capacity for industrial power systems

Construction Features

• Compact Class J knife-blade design
• Rugged industrial construction for long service life
• Non-indicating configuration
• Designed for high-performance electrical distribution systems

Mounting & Compatibility

• Mounting Method: Fuse Block / Holder
• Compatible with standard Class J fuse blocks and holders
• Suitable for switchboards, panelboards, motor control centers, and industrial distribution systems

Applications

• Industrial power distribution systems
• Switchboards and panelboards
• Motor control centers (MCCs)
• Large motor and transformer circuits
• Branch and feeder circuit protection

Product Data

• Manufacturer: Littelfuse
• Catalog Number: JTD600
• Series: JTD
• Fuse Class: Class J
• Family: POWR-PRO® Fuse

Returns are easy

You may return items within 30 days of delivery for a refund.

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