LPN-RK-45SP - 45 Amp Fuse

LPN-RK-45SP - 45 Amp Fuse

Choosing the right fuse means looking beyond the amperage stamped on the body. The Eaton Bussmann series LPN-RK-45SP is a 45A Class RK1 time-delay, current-limiting fuse rated for 250VAC and 125VDC. When correctly selected, installed by your qualified electrical personnel, and operated within its specified ratings, the PN-RK-45SP is built to last as part of a properly designed and maintained electrical system.

Key Features and Benefits

• 45A Class RK1 configuration: Provides a clearly defined 45-amp Class RK1 fuse specification for matching with compatible equipment.
• 250VAC / 125VDC ratings: Supports applications requiring the manufacturer's specified AC or DC voltage rating.
• Time-delay operation: Eaton identifies this model as a time-delay fuse, an important characteristic when selecting protection for circuits where in-rush current must be considered.
• High in-rush current motor protection: Eaton specifically lists this as a feature of the LPN-RK-45SP.
• Current-limiting design: Eaton specifies the fuse as current-limiting, providing another key characteristic to verify against circuit protection requirements.
• Dual-element construction: Uses the manufacturer's stated dual-element configuration.
• Ferrule End × ferrule end connection: Makes the connection style easy to identify when checking physical compatibility.
• Non-indicating configuration: Eaton identifies the LPN-RK-45SP as non-indicating in both its dedicated Fuse Indicator specification and supplied Special Features data.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPN-RK Fuse
  
• Catalog Number: LPN-RK-45SP
  
• Product Type: Fuse
  
• Fuse Class: Class RK1
  
• Amperage Rating: 45A
  
• AC Voltage Rating: 250VAC
  
• DC Voltage Rating: 125VDC
  
• AC Interrupting Rating: 300 kAIC at 250VAC
  
• DC Interrupting Rating: 100 kAIC at 125VDC
  
• Fuse Type: Time Delay; Current-Limiting
  
• Response Time: 10 sec. at 500%, as specified by Eaton
  
• Number of Elements: Dual
  
• Connection: Ferrule End × Ferrule End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: High In-Rush Current Motor Protection
  
• Product Length/Depth: 3 in.
  
• Product Height: 0.81 in.
  
• Product Width: 0.81 in.
  
• Product Weight: 0.124 lb.
  
• UPC: 051712538398
  
• CE Marked: Yes
  

Material Compliance and Certifications

According to Eaton's supplied specifications, the LPN-RK-45SP is CE Marked. This manufacturer-stated compliance information is useful when reviewing the fuse against applicable equipment, facility, project, or regulatory requirements.

Where It Works Best

The Eaton Bussmann LPN-RK-45SP 45A Class RK1 fuse is intended for compatible electrical equipment requiring a 45A rating, 250VAC / 125VDC voltage ratings, Class RK1 construction, time-delay operation, current-limiting characteristics, dual elements, and a ferrule-end × ferrule-end connection. Eaton's stated high in-rush current motor protection is also relevant when evaluating this fuse for compatible motor applications.