LPS-RK-40SP - 40Amp Fuse

LPS-RK-40SP - 40Amp Fuse

Getting the right fuse means checking more than the amperage stamped on the label. The Eaton Bussmann series LPS-RK-40SP is a 40A Class RK1 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 manufacturer-stated 10-second response time at 500%. When correctly selected, installed by your qualified electrical personnel, and operated within its specified ratings, the LPS-RK-40SP is built to last as part of a properly designed and maintained electrical system.

Key Features and Benefits

• 40A Class RK1 configuration: Combines a 40-amp rating with Class RK1 construction, giving you two important specifications to verify when matching a fuse to the intended equipment.
• Time-delay operation: Eaton specifies the LPS-RK-40SP as a time-delay fuse. Match this operating characteristic to the circuit requirements rather than selecting a fuse based on amperage alone.
• Current-limiting design: The manufacturer identifies this model as current-limiting, an important characteristic to confirm when selecting a fuse for a specific application.
• Dual-element construction: Uses Eaton's specified dual-element configuration.
• 600VAC / 300VDC ratings: Rated for 600VAC and 300VDC, giving buyers clear voltage specifications to compare against equipment requirements.
• Ferrule End × ferrule end connection: Provides another useful physical identification point when checking compatibility.
• Non-indicating: Eaton identifies this fuse as non-indicating.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPS-RK Fuse
  
• Catalog Number: LPS-RK-40SP
  
• Product Type: Fuse
  
• Fuse Class: Class RK1
  
• Amperage Rating: 40A
  
• AC Voltage Rating: 600VAC
  
• DC Voltage Rating: 300VDC
  
• AC Interrupting Rating: 300 kAIC at 600VAC
  
• DC Interrupting Rating: 100 kAIC at 300VDC
  
• Fuse Type: Time Delay; Current-Limiting
  
• Number of Elements: Dual
  
• Response Time: 10 sec at 500%
  
• Connection: Ferrule End × Ferrule End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: Electrically Isolated End Cap
  
• Product Length/Depth: 5.5 in.
  
• Product Height: 1.06 in.
  
• Product Width: 1.06 in.
  
• Product Weight: 2.6 lb.
  
• UPC: 051712548380
  
• CE Marked: Yes
  

Material Compliance and Certifications

According to Eaton's supplied product specifications, the LPS-RK-40SP is CE Marked. Do not assume additional certification or material-compliance designation for this catalog number without supporting manufacturer documentation.

Where It Works Best

The Eaton Bussmann LPS-RK-40SP 40A Class RK1 fuse is intended for compatible electrical equipment requiring its specific combination of a 40A rating, 600VAC / 300VDC voltage ratings, Class RK1 configuration, time-delay operation, current-limiting characteristics, dual-element construction, and ferrule-to-ferrule connection.