LPJ-4SP - 4 Amp Fuse

LPJ-4SP - 4 Amp Fuse

Getting the right fuse means checking more than the amp rating printed on the label. The Eaton Bussmann series LPJ-4SP is a 4A 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, along with a stated response time of 10 seconds at 500% of rated current. Its dual-element construction and manufacturer-identified high in-rush current motor protection make the LPJ-4SP suitable for compatible motor applications that require these characteristics. When properly selected, installed by your qualified electrical personnel, and operated within its specified ratings, the LPJ-4SP is built to last as part of a correctly designed and maintained electrical system.

Key Features and Benefits

• 4A Class J configuration: The LPJ-4SP combines a 4-amp rating with a Class J designation for compatible electrical equipment requiring these specifications.
• 600VAC and 300VDC ratings: Eaton specifies the fuse for 600VAC and 300VDC, giving technicians clearly defined voltage ratings to verify against the circuit and equipment.
• Time-delay operation: The LPJ-4SP is identified as a time-delay fuse, with Eaton stating a response time of 10 seconds at 500% of rated current.
• Current-limiting design: Eaton classifies this Class J fuse as current-limiting.
• Dual-element construction: The manufacturer specifies a dual-element design as part of the LPJ-4SP's operating configuration.
• Motor protection application: Eaton specifically identifies high in-rush current motor protection as a feature of this model.
• Ferrule-end connections: The ferrule-end × ferrule-end arrangement is an important physical detail when checking compatibility with existing equipment.
• Non-indicating configuration: Eaton identifies the LPJ-4SP as non-indicating.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPJ Fuse
  
• Catalog Number: LPJ-4SP
  
• Product Type: Fuse
  
• Fuse Class: Class J
  
• Fuse Type: Time Delay, Current-Limiting
  
• Number of Elements: Dual
  
• Amperage Rating: 4A
  
• 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: Ferrule End × Ferrule End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: High In-Rush Current Motor Protection
  
• Product Length/Depth: 2.25 in.
  
• Product Height: 0.81 in.
  
• Product Width: 0.81 in.
  
• Product Weight: 0.19 lb.
  
• UPC: 051712522816
  
• CE Marked: Yes
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

According to Eaton's manufacturer specifications, the LPJ-4SP is CE Marked and RoHS Compliant. These manufacturer-stated compliance details help when checking the fuse against applicable equipment, facility, or project requirements.

Where It Works Best

The Eaton Bussmann LPJ-4SP 4A Class J fuse is intended for compatible electrical systems requiring its specific combination of time-delay operation, current-limiting characteristics, dual-element construction, and high in-rush current motor protection. These characteristics make it especially relevant for maintaining motor circuits or other compatible electrical equipment whose documentation calls for the LPJ-4SP or matching electrical and physical specifications.