JLS350 - 350 Amp Fuse

JLS350 - 350 Amp Fuse

When you're replacing a 350A Class J fuse, matching the number on the label is only the beginning. The JLS350 is a 350-amp fast-acting fuse rated for operation up to 600VAC, with a 200 kA interrupting rating at 600VAC. For anyone checking a replacement or confirming compatibility with existing electrical equipment, the JLS350 provides a clear set of specifications: 350A current rating, Class J classification, 600VAC maximum voltage, fast-acting operation, knife-blade construction, and a 200 kA AC interrupting rating.

Key Features and Benefits

• 350A continuous current rating for equipment requiring a 350-amp fuse
• Rated for a maximum of 600VAC
• Fast-acting (F) opening characteristic
• Class J fuse classification
• Part of the JLS current-limiting fuse family
• Knife-blade construction for the specified mounting arrangement
• Non-indicating design
• Compatible mounting method includes a fuse block, clip, or holder
• LFJ60400 Series identified as the corresponding holder family
• Clearly specified electrical and mechanical characteristics make replacement matching more straightforward

Technical Specifications

• Catalog Number: JLS350
  
• Series: JLS
  
• Product Type: Class J Fuse
  
• Continuous Current Rating: 350A
  
• Maximum AC Voltage: 600VAC
  
• Interrupting Rating: 200 kA at 600VAC
  
• Interrupt Amperage: 200,000A
  
• Interrupt Voltage Type: AC
  
• Interrupt Voltage: 600VAC
  
• Opening Characteristic: Fast-Acting (F)
  
• Fuse Class: Class J
  
• Family Style: Current Limiting
  
• Construction / Size: Knife-Blade
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFJ60400 Series
  

Material Compliance and Certifications

The supplied manufacturer information identifies the JLS350 as a Class J, 350A fast-acting fuse with a current-limiting family style, 600VAC maximum voltage rating, 200 kA interrupting rating at 600VAC, and knife-blade construction.

Where It Works Best

The JLS350 350A fuse suits electrical equipment that calls for a 350A, Class J, fast-acting fuse with electrical and mechanical requirements matching this model. For AC service, verify that the circuit and equipment requirements are within the fuse's 600VAC maximum rating and are compatible with its 200 kA interrupting rating at 600VAC.

Physical compatibility deserves the same attention as the electrical ratings. The equipment should accommodate the JLS350's knife-blade configuration and its fuse block, clip, or holder mounting method. The supplied specifications identify the LFJ60400 Series as the corresponding holder family. Confirming all of these characteristics together provides a much more useful compatibility check than selecting a fuse based solely on its 350A rating.