JLLS900 - 900 Amp Fuse

JLLS900 - 900 Amp Fuse

The JLLS900 is a 900-amp Class T fast-acting fuse designed for your electrical equipment that requires a high-current, current-limiting fuse with knife-blade/bolt-in construction. If you're replacing an existing JLLS900, the catalog number is a useful reference—but amperage alone shouldn't determine the replacement. Confirm the Class T designation, voltage ratings, interrupting capacity, fast-acting characteristic, physical dimensions, and mounting arrangement against the equipment requirements before installation.

Key Features and Benefits

• 900A continuous current rating for equipment designed around a 900-amp fuse
• Class T fuse classification
• Fast-acting (F) opening characteristic
• Rated for a maximum of 600VAC
• Rated for a maximum of 300VDC
• Knife-blade/bolt-in construction
• Non-indicating design

Technical Specifications

• Catalog Number: JLLS900
  
• Series: JLLS
  
• Product Type: Class T Fuse
  
• Continuous Current Rating: 900A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• AC Interrupt Amperage: 200,000A (200 kA)
  
• AC Interrupt Voltage: 600VAC
  
• DC Interrupt Amperage: 20,000A (20 kA)
  
• DC Interrupting Rating: 20 kA at 300VDC
  
• Opening Characteristic: Fast-Acting (F)
  
• Fuse Class: Class T
  
• Family Style: Current Limiting
  
• Size / Construction: Knife-Blade / Bolt-In
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  

Material Compliance and Certifications

The supplied product information identifies the JLLS900 as a Class T, fast-acting, current-limiting fuse and provides detailed electrical ratings and its knife-blade/bolt-in configuration. However, the supplied specifications do not provide enough product-specific information to confirm exact material composition, environmental compliance declarations, or individual certification and listing numbers.

Where It Works Best

The JLLS900 900A Class T fuse suits electrical equipment designed for a 900A fast-acting Class T fuse with matching electrical and mechanical requirements. For AC applications, confirm the equipment operates within the 600VAC maximum rating and that the specified 200 kA AC interrupting capacity meets the circuit requirements.