LHL36400 - 400 Amp Circuit Breaker

LHL36400 - 400 Amp Circuit Breaker

If you're working with an LHL36400, confirm these key details for a proper match. This is a 400A, 3-pole molded case circuit breaker with a thermal-magnetic trip unit in a unit-mount configuration. It features lugs for line and load connections and uses the AL400LA terminal layout.

It has an interrupting capacity of 25 kA at 600VAC and 50 kA at 250VDC, with a magnetic hold current of 2,000A and a tripping current of 4,000A. These specifications are crucial for ensuring you select the right breaker for your application.

Key Features and Benefits

• 400A, 3-pole molded case circuit breaker for compatible electrical distribution equipment
• Thermal-magnetic trip technology provides overload and short-circuit protection
• Unit-mount construction for equipment requiring this particular mounting arrangement
• 2,000A magnetic hold current
• 4,000A magnetic tripping current
• Uses lugs on both the line and load sides
• AL400LA terminal configuration
• Specified tightening torque of 115.06 lbf-in (13 N·m)
• Push-to-Trip allows the breaker to be manually tripped without exposure to live parts
• HACR rated for applicable heating, air-conditioning, and refrigeration applications
• Useful for form, fit, and functional replacement work when existing equipment requires the LHL36400 configuration

Technical Specifications

• Catalog Number: LHL36400
  
• Product Type: Molded Case Circuit Breaker
  
• Frame / Series: LH / LHL
  
• Rated Current: 400A
  
• Number of Poles: 3
  
• Trip Unit Technology: Thermal-Magnetic
  
• Breaking Capacity Code: H
  
• Interrupting Rating at 600VAC: 25 kA
  
• Interrupting Rating at 250VDC: 50 kA
  
• Magnetic Hold Current: 2,000A
  
• Magnetic Tripping Current: 4,000A
  
• Mounting Mode: Unit Mount
  
• Line-Side Connection: Lugs
  
• Load-Side Connection: Lugs
  
• Terminal Identifier: AL400LA
  
• Tightening Torque: 115.06 lbf-in (13 N·m)
  
• Specified Conductor Range: 1 AWG–600 kcmil and 1 AWG–250 kcmil, depending on the applicable terminal and conductor configuration
  
• Height: 11 in. (279.4 mm)
  
• Width: 6 in. (152.4 mm)
  
• Depth: 5.84 in. (148.34 mm)
  
• Circuit Breaker Application: HACR Rated
  
• Country of Origin: Mexico
  
• GTIN: 785901339380
  

Material Compliance and Certifications

Manufacturer information supplied for the LHL36400 identifies the breaker as UL Listed, with CSA and IEC certifications also specified. The accompanying product description identifies the LH molded case breaker family with UL 489, CSA, and IEC certification.

Where It Works Best

The LHL36400 400A 3-pole circuit breaker belongs in a fairly specific conversation: maintaining existing or legacy electrical distribution equipment that requires this combination of amperage, mounting, connections, and electrical characteristics.

The lug arrangement is a useful place to start. This is a unit-mount breaker with lugs at both ends. The manufacturer identifies the terminal configuration as AL400LA. That distinction matters when you're sorting through breakers that may share the 400A rating but don't share the same physical connection method.