LHL36400 - 400 Amp Circuit Breaker

LHL36400 - 400 Amp Circuit Breaker

When you need dependable electrical protection for heavy-duty installations, the LHL36400 Circuit Breaker delivers. This 400 amp, 3-pole, unit-mount breaker is engineered to safeguard your systems from both overcurrent and short circuits—keeping your operations running smoothly and your equipment safe. Whether you're installing it in a commercial plant, data center, or industrial facility, you'll find it delivers the features and reliability you expect from a premium circuit protection device.

Key Features and Benefits

• High Load Capacity & Precision Protection: Handles up to 400 amps with a thermal-magnetic trip mechanism that accurately responds to overloads or short circuits.
• Versatile Mounting Options: Supports unit mount and I-Line configurations, simplifying integration into a variety of equipment layouts.
• Push-to-Trip Manual Test: Lets you manually interrupt the circuit during maintenance to verify breaker function—without exposing personnel to live parts.
• High Interrupting Ratings: Rated for 25 kA at 600 VAC and 50 kA at 250 VDC, able to clear substantial fault currents with confidence.
• Flexible Termination: Line and load lugs accommodate a wide range of conductor sizes for practical field wiring.

Technical Specifications

• Rated Current: 400 Amps
• Number of Poles: 3
• Voltage Rating: 600 VAC / 250 VDC
• Interrupting Capacity:
  • 25 kA @ 600 VAC
  • 50 kA @ 250 VDC
• Mounting Style: Unit mount (I-Line compatible)
• Dimensions:
  • Height: 11.00 in (279.4 mm)
  • Width: 6.00 in (152.4 mm)
  • Depth: 5.84 in (148.3 mm)
• Magnetic Trip Range: Hold: 2,000 A · Trip: 4,000 A
• Terminal Identifier: AL400LA

Material Compliance and Certifications

• This breaker meets rigorous safety and regulatory standards. It carries the Green Premium designation, meaning it complies with RoHS/REACH restrictions and is free from harmful substances.
• It's certified under UL 489, CSA, and IEC standards, so you're assured of consistent performance and acceptance across North America and international markets.

Where It Works Best

• The LHL36400 is built for demanding settings—think manufacturing plants, extensive commercial facilities, data centers, and critical infrastructure hubs. It performs exceptionally well in systems that face high fault levels or require flexible mounting and robust protection. If you're designing or upgrading a power distribution system and need a dependable, mid- to high-current breaker, this one consistently delivers.