LH36400 - 400 Amp Circuit Breaker

LH36400 - 400 Amp Circuit Breaker

Meet the LH36400 400 Amp circuit breaker, engineered to deliver dependable protection for high-current systems. Whether you're outfitting a manufacturing floor, data center, or heavy-duty electrical distribution panel, this three-pole I-Line device brings both power and precision to your system. In everyday terms, this breaker keeps your equipment safe from overloads and short circuits, while offering the performance demanded by commercial and industrial installations. With a thermal-magnetic trip unit, it senses both gradual overcurrent (overload) and sudden surges (faults). The device can interrupt up to 25 kA at 600 VAC, making it suitable even where fault currents are high. It uses I-Line mounting on the line side and lug connections on the load side, so integration with existing panel systems is straightforward. Durability and regulatory compliance are built in: the LH36400 is certified under UL, CSA, IEC, and adheres to RoHS / REACh standards. It also carries a Green Premium™ label—reflecting material choices like halogen-free plastics and avoidance of mercury or PVC—so you get performance that's kinder to the planet.

Key Features and Benefits

• High Current Capacity: Rated at 400 A, suited for demanding electrical loads.
• Thermal-Magnetic Protection: Sensitive to both overloads and short-circuit events.
• 25 kA Interrupting Capability (at 600 VAC): Handles strong fault currents without failure.
• I-Line Mounting + Lug Load Connections: Simplifies retrofit or new panel installations.
• Push-to-Trip Test Button: Makes mechanical tripping possible for quick system checks.
• "Blow-On" Connection Design: Under fault conditions the jaws draw tighter, improving contact grip.
• Green Premium™ Compliant: Built with environmentally safer materials (mercury-free, halogen-free).

Technical Specifications

• Current Rating: 400 A
  
• Poles: 3
  
• Interrupting Capacity: 25 kA @ 600 VAC
  
• Trip Unit Technology: Thermal-magnetic
  
• Magnetic Hold Current: 2000 A
  
• Magnetic Tripping Current: 4000 A
  
• Mounting Mode: I-Line (line side), lugs (load side)
  
• Dimensions: 12.5" (H) × 6" (W) × 4" (D)
  
• Terminal Identifier: AL400LA
  
• Ambient Temperature Rating: 40 °C
  

Material Compliance and Certifications

• Certifications: UL Listed, CSA certified, IEC compliant
• Environmental Compliance: RoHS / REACh
• Sustainability Attributes: Green Premium™ label; no mercury, no PVC, halogen-free plastics

Where It Works Best

• The LH36400 is ideal for commercial and industrial settings where reliability, safety, and compliance matter. Use it in:
• Main or distribution panels in factories, plants, or data centers
• Electrical systems that must endure high fault levels
• Environments prioritizing eco-friendly materials
• Retrofit projects requiring I-Line compatibility with minimal rewiring