LAL36300 - 300 Amp Circuit Breaker

LAL36300 - 300 Amp Circuit Breaker

The LAL36300 is a 300-amp, 3-pole Type LA molded case circuit breaker with thermal-magnetic protection. If you’re maintaining existing equipment that calls for an LA breaker, compare the whole specification—not simply the 300A rating. Pole count, voltage, interrupting capacity, mounting, terminals, and physical dimensions must match the application. Properly selected, installed, and operated within its specified ratings, the LAL36300 is built to last in the equipment it was designed to serve.

Key Features and Benefits

• 300A, 3-Pole Configuration: Suited to compatible equipment requiring a 300-amp, three-pole Type LA breaker.
• Thermal-Magnetic Protection: Uses thermal sensing for overload conditions and magnetic sensing for short-circuit conditions.
• Unit-Mount Design: Intended for equipment that accommodates the corresponding unit-mount arrangement.
• Line and Load Lugs: Includes lug connections on both sides of the breaker.
• Push-to-Trip: Allows manual tripping without exposure to live parts.
  

Technical Specifications

• Catalog Number: LAL36300
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Type: LA
  
• Rated Current: 300A
  
• Number of Poles: 3
  
• Trip Unit Technology: Thermal-magnetic
  
• AC Voltage Rating: 600VAC
  
• Interrupting Rating at 600VAC: 22kA
  
• DC Voltage Rating: 250VDC
  
• Interrupting Rating at 250VDC: 10kA
  
• Mounting Mode: Unit mount
  
• Magnetic Hold Current: 1500A
  
• Magnetic Tripping Current: 3000A
  
• Line Connection: Lugs
  
• Load Connection: Lugs
  
• Terminal Identifier: AL400LA
  
• Specified 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 to the supplied terminal specifications
  
• 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 specifications identify the LAL36300 as UL Listed and CSA- and IEC-certified. The manufacturer information also indicates the LA breaker family meets UL 489 requirements.

Where It Works Best

The LAL36300 is most relevant when maintaining or repairing existing electrical equipment that requires a 300A, 3-pole Type LA thermal-magnetic molded case circuit breaker with unit mounting.