LAL36400 - 400 Amp Circuit Breaker

LAL36400 - 400 Amp Circuit Breaker

The LAL36400 is a 400-amp, 3-pole Type LA molded case circuit breaker with thermal-magnetic protection. This breaker uses a unit-mount configuration and has lugs on both the line and load sides. It also includes Push-to-Trip, which lets you manually trip the breaker without exposure to live parts. For anyone replacing a breaker in existing equipment, it pays to look beyond the 400A rating. When your LAL36400 matches those requirements and is properly installed and used within its specified ratings, it's built to last in the application it was designed for.

Key Features and Benefits

• 400A rated current with a 3-pole configuration
• Thermal-magnetic trip unit for overload and short-circuit protection
• Unit-mount construction for compatible equipment
• Line and load lugs with AL400LA terminal identification
• Push-to-Trip provides a straightforward way to manually trip the breaker without exposure to live parts
  

Technical Specifications

• Catalog Number: LAL36400
  
• Product Type: Molded Case Circuit Breaker
  
• Type: LA
  
• Amperage: 400A
  
• Poles: 3
  
• Trip Technology: Thermal-magnetic
  
• AC Voltage: 600VAC
  
• Interrupting Rating: 22kA at 600VAC
  
• DC Voltage: 250VDC
  
• DC Interrupting Rating: 10kA at 250VDC
  
• Mounting: Unit mount
  
• Magnetic Hold Current: 2000A
  
• Magnetic Tripping Current: 4000A
  
• Electrical Connections: Line and load lugs
  
• Terminal Identifier: AL400LA
  
• Tightening Torque: 115.06 lbf-in (13 N·m), subject to the specified conductor range
  
• Specified Conductor Ranges: 1 AWG–600 kcmil and 1 AWG–250 kcmil, as applicable
  
• Height: 11 in. (279.4 mm)
  
• Width: 6 in. (152.4 mm)
  
• Depth: 5.84 in. (148.34 mm)
  
• Application: HACR rated
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The supplied product specifications identify the LAL36400 as UL Listed and certified to CSA and IEC requirements. The provided manufacturer information also identifies the LA molded case circuit breaker family as UL 489 certified.

Where It Works Best

The LAL36400 makes the most sense when maintaining or repairing equipment that was designed around a 400A, 3-pole Type LA circuit breaker with matching electrical and physical characteristics. This matters especially with existing and legacy equipment, where keeping the correct form, fit, and function may be more useful than simply finding another breaker with the same amperage.

Before matching, compare the key numbers: 400A, three poles, 600VAC at 22kA, or 250VDC at 10kA, depending on the application. Then check the installation details. This model is unit-mounted, uses line and load lugs with AL400LA terminals, and measures 11 inches high, 6 inches wide, and 5.84 inches deep.