LPJ-500SP - 500 Amp Fuse

LPJ-500SP - 500 Amp Fuse

When your fuse protects a high-amperage circuit, getting the specifications right matters far more than finding something that looks like it will fit. The Eaton Bussmann series LPJ-500SP is a 500A Class J time-delay, current-limiting fuse rated for 600VAC and 300VDC. Eaton specifies interrupting ratings of 300 kAIC at 600VAC and 100 kAIC at 300VDC, with a stated response time of 10 seconds at 500% of rated current. For maintenance teams and electrical professionals, the catalog number, ratings, connection style, dimensions, and protection characteristics provide several useful checkpoints for confirming the correct fuse. When properly selected, installed by your qualified electrical personnel, and operated within its specified ratings, the LPJ-500SP is built to last as part of a correctly designed and maintained electrical system.

Key Features and Benefits

• 500A Class J fuse: Rated at 500 amps and identified as a Class J fuse for compatible equipment requiring these specifications.
• 600VAC and 300VDC ratings: Eaton specifies both 600VAC and 300VDC voltage ratings, giving technicians clear values to compare with circuit requirements.
• Time-delay operation: Eaton classifies the LPJ-500SP as a time-delay fuse and states a response time of 10 seconds at 500% of rated current.
• Current-limiting design: Eaton identifies this model as a current-limiting fuse.
• Dual-element construction: The LPJ-500SP uses a manufacturer-specified dual-element configuration.
• Motor protection application: Eaton specifically lists high in-rush current motor protection as a special feature of this fuse.
• Bolted blade connections: Its bolted blade-to-bolted blade connection style is an important physical characteristic to check when confirming compatibility.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPJ Fuse
  
• Catalog Number: LPJ-500SP
  
• Product Type: Fuse
  
• Fuse Class: Class J
  
• Fuse Type: Time Delay, Current-Limiting
  
• Number of Elements: Dual
  
• Amperage Rating: 500A
  
• AC Voltage Rating: 600VAC
  
• DC Voltage Rating: 300VDC
  
• AC Interrupting Rating: 300 kAIC at 600VAC
  
• DC Interrupting Rating: 100 kAIC VDC
  
• Response Time: 10 sec. at 500%
  
• Connection: Bolted Blade End × Bolted Blade End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: High In-Rush Current Motor Protection
  
• Product Length/Depth: 8 in.
  
• Product Height: 2.5 in.
  
• Product Width: 2.5 in.
  
• Product Weight: 1.39 lb.
  
• UPC: 051712522861
  
• CE Marked: Yes
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

According to Eaton's specifications, the LPJ-500SP is CE Marked and RoHS Compliant. These manufacturer-stated compliance details can be useful when evaluating the fuse against applicable equipment, facility, or project requirements.

Where It Works Best

The Eaton Bussmann LPJ-500SP 500A Class J fuse is intended for compatible electrical systems that require its combination of time-delay operation, current-limiting characteristics, dual-element construction, and high in-rush current motor protection. It is especially relevant when servicing motor circuits or other compatible electrical equipment whose documentation specifies the LPJ-500SP or matching electrical and physical characteristics.