LHL36125 - 125 Amp Circuit Breaker

LHL36125 - 125 Amp Circuit Breaker

The extra "L" in LHL36125 matters. This 125A, 3-pole molded case circuit breaker uses a unit-mount configuration, with lugs on both the line and load sides. That's an important distinction when you're trying to match a breaker in existing electrical equipment. The LHL36125 uses thermal-magnetic trip technology, combining thermal sensing for overload conditions with magnetic sensing for short-circuit conditions.

Key Features and Benefits

• 125A, 3-pole molded case circuit breaker for compatible unit-mount electrical equipment
• Unit-mount configuration rather than an I-Line mounting arrangement
• Thermal-magnetic trip technology for overload and short-circuit protection
• Manufacturer-specified 625A magnetic hold current
• Manufacturer-specified 1,250A magnetic tripping current
• Lug connections on both line and load sides, an important detail when matching existing equipment
• AL400LA terminal identifier
• Specified terminal tightening torque of 115.06 lbf-in (13 N·m)
• HACR rated for applicable heating, air-conditioning, and refrigeration applications
• Well suited to replacement applications where the equipment requires the specific LHL36125 form, fit, and function

Technical Specifications

• Catalog Number: LHL36125
  
• Product Type: Molded Case Circuit Breaker
  
• Frame / Series: LH
  
• Rated Current: 125A
  
• 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: 625A
  
• Magnetic Tripping Current: 1,250A
  
• Mounting Mode: Unit Mount
  
• Line-Side Connection: Lugs
  
• Load-Side Connection: Lugs
  
• Terminal Identifier: AL400LA
  
• Terminal Tightening Torque: 115.06 lbf-in (13 N·m)
  
• Specified Conductor Range: AWG 1–600 kcmil and AWG 1–250 kcmil, depending on the applicable terminal/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
  

Material Compliance and Certifications

Manufacturer specifications identify the LHL36125 as UL Listed, CSA certified, and IEC certified. These certifications help you check the breaker against the requirements of the existing equipment and installation.

Where It Works Best

The LHL36125 125A 3-pole circuit breaker makes the most sense in existing and legacy electrical distribution equipment that specifically requires an LH-frame unit-mount breaker with lug connections on both sides.

That's the detail to watch. A breaker can share the same 125A rating and three-pole arrangement yet use a different mounting or connection method. For the LHL36125, manufacturer specifications call for unit mounting, with AL400LA lugs on both the line and load sides. Available equipment space must also accommodate its approximately 11-inch height, 6-inch width, and 5.84-inch depth.