LHL36300 - 300 Amp Circuit Breaker

LHL36300 - 300 Amp Circuit Breaker

If LHL36300 is the catalog number you're trying to match, the 300A rating is only the first piece of the puzzle. This is a 300A, 3-pole molded case circuit breaker with a thermal-magnetic trip unit and a unit-mount design. Connections are straightforward: lugs on the line side, lugs on the load side, with AL400LA terminals.

Key Features and Benefits

• 300A, 3-pole molded case circuit breaker
• Thermal-magnetic trip technology for overload and short-circuit protection
• Unit-mount design for equipment requiring this specific mounting arrangement
• 1,500A magnetic hold current
• 3,000A magnetic tripping current
• Lug connections on both line and load sides
• AL400LA terminal configuration
• Terminal tightening torque specified at 115.06 lbf-in (13 N·m)
• Push-to-Trip permits manual tripping without exposure to live parts
• HACR rated for applicable heating, air-conditioning, and refrigeration applications

Technical Specifications

• Catalog Number: LHL36300
  
• Product Type: Molded Case Circuit Breaker
  
• Frame / Series: LH / LHL
  
• Rated Current: 300A
  
• 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: 1,500A
  
• Magnetic Tripping Current: 3,000A
  
• 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: 785901339373
  

Material Compliance and Certifications

The manufacturer information supplied for the LHL36300 identifies the breaker as UL Listed and lists CSA and IEC certifications. The accompanying product description further identifies the LH molded case breaker family as certified to UL 489, CSA, and IEC requirements.

Where It Works Best

The LHL36300 300A 3-pole circuit breaker fits a fairly specific replacement situation: existing or legacy electrical distribution equipment that calls for an LH unit-mount breaker with lug connections at both ends.