JTD450 - 450 Amp Fuse

JTD450 - 450 Amp Fuse

With a 450A Class J fuse, amperage is only one part of getting the replacement right. The JTD450 is a 450-amp Class J time-delay fuse with knife-blade construction, a maximum rating of 600VAC and 500VDC, and a Slo-Blo/Time Lag (T)/Time Delay opening characteristic. If you're replacing an existing fuse, compare the complete specification rather than stopping at “450A”: Class J, time-delay operation, voltage, interrupting requirements, knife-blade format, non-indicating configuration, and holder compatibility all matter when determining whether the JTD450 matches the equipment.

Key Features and Benefits

• 450A continuous current rating for equipment specifically requiring a 450-amp fuse
• Class J fuse configuration provides a key specification for accurate replacement matching
• Time-delay opening characteristic, also identified as Slo-Blo/Time Lag (T)
• Rated for a maximum of 600VAC
• Also rated for a maximum of 500VDC
• Knife-blade construction provides a clear physical characteristic to verify against the existing installation
• Non-indicating design for equipment calling for this configuration
• Part of the JTD Series
• Mounts using a compatible fuse block, clip, or holder
• LFJ60600 Series is specified as the PG holder

Technical Specifications

• Catalog Number: JTD450
  
• Series: JTD
  
• Manufacturer Description: FUS 600V T/D CLASS J 450A
  
• Product Type: Class J Time-Delay Fuse
  
• Continuous Current Rating: 450A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 500VDC
  
• AC Interrupting Value 1: 200,000A at 600VAC
  
• AC Interrupting Value 2: 300,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 500VDC
  
• Published Interrupting Rating: 20 kA at 500VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Fuse Class: Class J
  
• Family Style: POWR-PRO Fuse
  
• Construction / Size: Knife-Blade
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified PG Holder: LFJ60600 Series
  

Material Compliance and Certifications

The supplied product information confirms the JTD450 electrical ratings, Class J designation, time-delay opening characteristic, knife-blade construction, non-indicating configuration, mounting method, and specified holder series.

Where It Works Best

The JTD450 suits electrical equipment designed for a 450A Class J time-delay, non-indicating, knife-blade fuse with matching electrical requirements. For AC service, confirm the equipment requirements match the 600VAC maximum rating and the applicable supplied AC interrupting value. For DC service, verify the 500VDC maximum voltage and 20 kA interrupting rating at 500VDC against the equipment specifications.