LPS-RK-400SP - 400Amp Fuse

LPS-RK-400SP - 400Amp Fuse

When you're replacing a 400A fuse, the amp rating is only one piece of the puzzle. The Eaton Bussmann series LPS-RK-400SP is a 400A 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. When correctly selected, installed by qualified electrical personnel, and operated within its specified ratings, the LPS-RK-400SP is built to last as part of a properly designed and maintained electrical system.

Key Features and Benefits

• 400A Class RK1 configuration: Combines a 400-amp rating with Class RK1 construction, giving maintenance teams clear specifications for matching a fuse to compatible equipment.
• Time-delay operation: Eaton identifies the LPS-RK-400SP as a time-delay fuse. Match this characteristic to the circuit and equipment requirements rather than selecting on amperage alone.
• Current-limiting design: Manufacturer-specified current-limiting construction is another important characteristic to confirm during fuse selection.
• Dual-element construction: Uses a dual-element configuration as specified by Eaton.
• 600VAC and 300VDC ratings: Supports applications requiring the corresponding AC or DC rating, provided all other system requirements are satisfied.
• Blade end × blade end connection: Provides a clear physical checkpoint when confirming fit with the intended equipment.
• Non-indicating configuration: Eaton identifies this catalog number as a non-indicating fuse.

Technical Specifications

• Manufacturer: Eaton
  
• Product Family: Bussmann Series
  
• Product Name: Eaton Bussmann Series LPS-RK Fuse
  
• Catalog Number: LPS-RK-400SP
  
• Product Type: Fuse
  
• Fuse Class: Class RK1
  
• Amperage Rating: 400A
  
• 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
  
• Connection: Blade End × Blade End
  
• Fuse Indicator: Non-Indicating
  
• Special Feature: Electrically Isolated End Cap
  
• Product Length/Depth: 11.63 in.
  
• Product Height: 2.36 in.
  
• Product Width: 2.36 in.
  
• Product Weight: 4.6 lb.
  
• UPC: 051712548557
  
• RoHS Compliant: Yes
  
• CE Marked: Yes
  

Material Compliance and Certifications

According to Eaton's supplied specifications, the LPS-RK-400SP is RoHS Compliant and CE Marked. Those designations are useful when documenting product requirements, but they shouldn't be treated as substitutes for verifying electrical compatibility.

Where It Works Best

The Eaton Bussmann LPS-RK-400SP 400A Class RK1 fuse is intended for compatible electrical equipment that requires its specific combination of 400A current rating, 600VAC / 300VDC voltage ratings, Class RK1 construction, time-delay operation, current-limiting characteristics, dual-element construction, and blade-end × blade-end connections.