Schneider Electric LH36400 | 400A 3-Pole I-Line Molded Case Circuit Breaker

Main Description:

The Schneider Electric LH36400 is a heavy-duty molded case circuit breaker from the Square D I-Line series, designed for high-capacity three-phase electrical distribution. With a 400A current rating, 600VAC operating voltage, and a strong interrupting capacity, this LH-type breaker delivers dependable protection for commercial, industrial, and utility-grade systems. Equipped with long-time and instantaneous trip functions using thermal-magnetic technology, the LH36400 safeguards against both overload and short-circuit conditions while maintaining reliable, code-compliant performance. The I-Line plug-in mounting system ensures fast, secure installation into compatible panelboards.

Technical Overview:

• Manufacturer: Schneider Electric (Square D)

• Part Number: LH36400

• Product Type / Series: I-Line / Type LH

• Category: Circuit Breaker

• Subcategory: Molded Case Circuit Breaker

• Poles: 3

• Phase Connection: ABC

• System Type: 3-Phase

• Amperage Rating: 400A

• Voltage Rating: 600VAC

• Interrupting Rating:

  • 25kA @ 600VAC (per primary spec)

  • 35kA @ 480VAC (per extended data)

• Breaking Capacity Code: H

• Trip Unit Type: Thermal-Magnetic

• Trip Functions: Long-Time, Instantaneous (LI)

• Magnetic Hold: 2000A

• Magnetic Trip: 4000A

• Mounting Mode: I-Line Plug-In

• Terminal Identifier: AL400LA

• Application Rating: HACR Rated

• Dimensions (HxWxD): 12.5 in × 6 in × 4 in

• Condition: New/Never Used Surplus

Key Features:

• High-capacity 400A protection for demanding 3-phase systems

• I-Line plug-in mounting for fast, secure panelboard installation

• Thermal-magnetic trip technology for reliable overload and short-circuit response

• Long-Time and Instantaneous trip functions prevent nuisance tripping and provide fast fault clearing

• Suitable for industrial, commercial, and large facility power distribution

• Rugged molded-case construction for long-term durability