LPN-RK-300SP - 300 Amp Fuse

LPN-RK-300SP - 300 Amp Fuse

When you're selecting a 300-amp fuse, the label number is only the starting point. The Eaton Bussmann series LPN-RK-300SP is a 300A Class RK1 time-delay, current-limiting fuse rated for 250VAC and 250VDC. Eaton specifies interrupting ratings of 300 kAIC at 250VAC and 100 kAIC at 250VDC, giving you two important values to check against the electrical system before installation. When correctly selected, installed by qualified electrical personnel, and operated within its specified ratings, the LPN-RK-300SP is built to last as part of a properly designed and maintained electrical system.

Key Features and Benefits

• 300A Class RK1 configuration: Combines a 300-amp rating with the manufacturer's specified Class RK1 construction, giving technicians clear criteria for equipment matching.
• 250VAC and 250VDC ratings: Rated for both AC and DC applications within the respective manufacturer-specified limits.
• Time-delay operation: Provides the time-delay characteristic Eaton specifies for applications requiring this type of fuse behavior.
• Current-limiting design: Eaton identifies the LPN-RK-300SP as a current-limiting fuse.
• Dual-element construction: Uses Eaton's specified dual-element configuration.
• Blade end × blade end connection: Provides a specific physical connection configuration to verify against the fuse holder and equipment.
• Non-indicating configuration: Eaton identifies the LPN-RK-300SP as a non-indicating fuse.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPN-RK Fuse
  
• Catalog Number: LPN-RK-300SP
  
• Product Type: Fuse
  
• Fuse Class: Class RK1
  
• Fuse Type: Time Delay; Current-Limiting
  
• Number of Elements: Dual
  
• Amperage Rating: 300A
  
• AC Voltage Rating: 250VAC
  
• DC Voltage Rating: 250VDC
  
• AC Interrupting Rating: 300 kAIC at 250VAC
  
• DC Interrupting Rating: 100 kAIC at 250VDC
  
• Connection: Blade End × Blade End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: High In-Rush Current Motor Protection
  
• Product Length/Depth: 8.63 in.
  
• Product Height: 2.36 in.
  
• Product Width: 2.36 in.
  
• Product Weight: 1.75 lb.
  
• UPC: 051712538534
  
• CE Marked: Yes
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

According to Eaton's supplied specifications, the LPN-RK-300SP is CE Marked and identified by the manufacturer as RoHS Compliant. These manufacturer-stated compliance details provide useful reference points when evaluating the fuse against applicable equipment, facility, project, or regulatory requirements.

Where It Works Best

The Eaton Bussmann LPN-RK-300SP 300A Class RK1 fuse is intended for compatible electrical equipment requiring a 300A rating, 250VAC / 250VDC voltage ratings, time-delay operation, current-limiting characteristics, dual-element construction, and a blade-end × blade-end connection. Eaton's stated high in-rush current motor protection is also relevant when evaluating the fuse for compatible motor applications.