LDB3400 - 400Amp Circuit Breaker

LDB3400 - 400Amp Circuit Breaker

With the LDB3400, several details help you narrow down the match quickly: 400 amps, three poles, an L frame, and a T186 trip type. This Eaton Series C LDB molded case circuit breaker comes complete with aluminum line and load terminals.

Key Features and Benefits

• 400A current rating: Clearly rated at 400 amps for equipment requiring this exact amperage.
• Three-pole configuration: Gives you another essential specification to check against the existing breaker and electrical system.
• Series C LDB design: The series and LDB breaker type are important identifiers when matching existing equipment.
• L frame: Helps confirm the required breaker configuration and physical fit.
• T186 trip type: A specific trip designation that should be included in the compatibility check rather than relying on amperage alone.
• Line and load terminals: Both are included, with aluminum specified as the terminal material.
• 50–60 Hz frequency rating: Provides another electrical specification to compare with the application.

Technical Specifications

• Catalog Number: LDB3400
  
• UPC: 786679147924
  
• Manufacturer: Eaton
  
• Product Name: Series C Complete Molded Case Circuit Breaker
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: LDB
  
• Frame: L
  
• Frame Type: Complete Breaker
  
• Amperage Rating: 400 A
  
• Number of Poles: 3
  
• Trip Type: T186
  
• Frequency Rating: 50–60 Hz
  
• Interrupt Rating at 240VAC: 65 kAIC
  
• Interrupt Rating at 480VAC: 35 kAIC
  
• Terminals: Line and Load
  
• Terminal Material: Aluminum
  
• Height: 8.25 in.
  
• Width: 8.25 in.
  
• Length/Depth: 4.06 in.
  
• Product Weight: 20 lb
  

Material Compliance and Certifications

The LDB3400 is UL 489 certified, which is important to verify when the application requires this certification. The provided specifications did not include CSA, IEC, RoHS, REACH, or other material-compliance information, so do not assume those approvals.

Where It Works Best

The LDB3400 400A circuit breaker is best suited to compatible existing and legacy electrical equipment calling for a three-pole Series C LDB molded case circuit breaker with an L frame, T186 trip type, and matching electrical characteristics.