LA3400 - 400Amp Circuit Breaker

LA3400 - 400Amp Circuit Breaker

The LA3400 is a 400-amp, 3-pole Type LA molded-case circuit breaker for compatible electrical equipment that requires this particular breaker configuration. It has a thermal-magnetic design with an interchangeable trip unit, a 40°C rating, and load-side terminals. If those details match the equipment you're servicing, the LA3400 can provide the form, fit, and function needed to keep compatible existing and legacy electrical systems in service.

Key Features and Benefits

• 400A, 3-pole configuration for equipment requiring these specific electrical characteristics
• Type LA molded case circuit breaker
• Uses a thermal-magnetic trip design
• Equipped with an interchangeable trip unit
• 40°C rated
• Load-side terminals are included
• Well suited to compatible existing and legacy equipment when the breaker specifications match the application
  

Technical Specifications

• Part Number: LA3400
  
• Product Type: Molded Case Circuit Breaker
  
• Type: LA
  
• Amperage: 400A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Interchangeable
  
• Temperature Rating: 40°C
  
• A.I.C. at 600VAC: 22kA
  
• A.I.C. at 480VAC: 30kA
  
• A.I.C. at 240VAC: 42kA
  
• Terminals: Load-side terminals included
  
• Height: 10.75 in.
  
• Width: 8.25 in.
  
• Depth: 4.00 in.
  
• Overall Dimensions: 8.25" W x 10.75" L x 4.00" D
  
• Approximate Ship Weight: 25.00 lbs.
  

Material Compliance and Certifications

No specific certification, listing, or material-compliance information was provided for the LA3400, so do not assume certifications such as UL, RoHS, or REACH.

Where It Works Best

The LA3400 makes the most sense in existing and legacy electrical systems that call for a 400-amp, 3-pole Type LA thermal magnetic circuit breaker with an interchangeable trip unit.

Before choosing it as a replacement, put the specifications side by side with the existing breaker. Check the LA3400 part number or Type LA designation, amperage, number of poles, system voltage, required interrupting rating, 40°C rating, trip-unit configuration, and physical dimensions.