LPJ-350SP - 350 Amp Fuse

LPJ-350SP - 350 Amp Fuse

When you're matching a fuse to existing electrical equipment, the details matter—especially at 350 amps. The Eaton Bussmann series LPJ-350SP is a 350A Class J time-delay, current-limiting fuse rated for 600VAC and 300VDC. For maintenance and form, fit, and functional replacement applications, these clear specifications give electricians and maintenance personnel multiple checkpoints to confirm compatibility. Properly selected, professionally installed, and operated within its specified ratings, the LPJ-350SP is built to last as part of a correctly designed and maintained electrical system.

Key Features and Benefits

• 350A Class J fuse: Rated at 350 amps and identified by Eaton as a Class J fuse for compatible electrical equipment.
• Time-delay operation: Eaton specifies a response time of 10 seconds at 500% of rated current, an important characteristic to confirm when time-delay protection is required.
• High-inrush-current motor protection: Eaton identifies the LPJ-350SP for high-inrush-current motor protection.
• Current-limiting fuse: Eaton identifies the LPJ-350SP as a current-limiting fuse; verify this characteristic against the requirements of the intended equipment and electrical system.
• Dual-element construction: Uses a dual-element configuration as part of the fuse design.
• AC and DC voltage ratings: Rated for 600VAC and 300VDC, providing clearly defined specifications for AC and DC applications.
• Bolted-blade connection: Uses a bolted-blade-end × bolted-blade-end configuration for compatible mounting arrangements.
• Non-indicating specification: The dedicated fuse-indicator specification identifies the LPJ-350SP as non-indicating.

Technical Specifications

• Manufacturer: Eaton
  
• Series: Bussmann Series LPJ
  
• Product Name: Eaton Bussmann Series LPJ Fuse
  
• Catalog Number: LPJ-350SP
  
• Product Type: Fuse
  
• Fuse Class: Class J
  
• Fuse Type: Time Delay, Current Limiting
  
• Number of Elements: Dual
  
• Amperage Rating: 350A
  
• AC Voltage Rating: 600VAC
  
• DC Voltage Rating: 300VDC
  
• AC Interrupting Rating: 300 kAIC at 600VAC
  
• DC Interrupting Rating: 100 kAIC VDC
  
• Manufacturer-Specified Response Time: 10 seconds at 500%
  
• Connection: Bolted Blade End × Bolted Blade End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: High In-Rush Current Motor Protection
  
• Product Length/Depth: 7.13 in.
  
• Product Height: 2 in.
  
• Product Width: 2 in.
  
• Product Weight: 1.5 lb.
  
• UPC: 051712522830
  
• CE Marked: Yes
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

According to Eaton's specifications, the LPJ-350SP is CE Marked and RoHS Compliant. These manufacturer-stated compliance details help when checking the fuse against applicable equipment, project, facility, or material requirements.

Where It Works Best

The Eaton Bussmann LPJ-350SP 350A Class J fuse is intended for compatible electrical equipment requiring its combination of 350A capacity, time-delay operation, current-limiting characteristics, dual-element construction, and bolted-blade connections. Eaton also identifies the LPJ-350SP for high-inrush-current motor protection, making that manufacturer-stated characteristic an important consideration when evaluating the fuse for compatible motor applications.