JTD040 - 40 Amp Fuse

JTD040 - 40 Amp Fuse

A 40A marking is only the starting point when you're matching a fuse to existing electrical equipment. The JTD040 is a 40-amp Class J time-delay fuse with industrial cartridge-style construction, designed to meet specific electrical and physical requirements. It carries maximum voltage ratings of 600VAC and 300VDC and uses a Slo-Blo/Time Lag (T)/Time Delay opening characteristic. Manufacturer specifications identify two AC interrupting values—200 kA at 600VAC and 300 kA at 600VAC—as well as a 20 kA interrupting rating at 300VDC. The JTD040 belongs to the JTD Series and POWR-PRO Fuse family and is specifically listed as non-indicating.

Key Features and Benefits

• 40A continuous current rating for equipment specifically requiring a 40-amp fuse
• Class J configuration for systems designed to accept this fuse class
• Time-delay opening characteristic, specified as Slo-Blo/Time Lag (T)/Time Delay
• Maximum 600VAC rating
• Maximum 300VDC rating
• Industrial cartridge construction for compatible mounting arrangements
• Non-indicating design, an important detail when matching the original fuse specification
• Identified as part of the POWR-PRO Fuse family
• Mounts using a compatible fuse block, clip, or holder
• LFPSJ60 Series is identified as the specified holder family

Technical Specifications

• Catalog Number: JTD040
  
• Series: JTD
  
• Product Type: Class J Time-Delay Fuse
  
• Continuous Current Rating: 40A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Fuse Class: Class J
  
• Family Style: POWR-PRO Fuse
  
• Size / Construction: Industrial Cartridge
  
• Indicating: No
  
• AC Interrupting Value 1: 200,000A at 600VAC
  
• AC Interrupting Value 2: 300,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 300VDC
  
• Published Interrupting Rating: 20 kA at 300VDC
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFPSJ60 Series
  

Material Compliance and Certifications

The supplied product information confirms the JTD040 as a 40A Class J time-delay fuse with industrial cartridge-style construction.

Where It Works Best

The JTD040 40A Class J time-delay fuse is suited to electrical equipment specifically designed for a 40-amp Class J fuse with time-delay operation and a non-indicating configuration. For AC service, verify the equipment requirements against the 600VAC maximum rating and the applicable AC interrupting requirement. For DC service, the supplied specifications provide a maximum rating of 300VDC and a 20 kA interrupting rating at 300VDC.