LHL36300 - 300 Amp Circuit Breaker

LHL36300 - 300 Amp Circuit Breaker

The LHL36300 circuit breaker is engineered for heavy-duty electrical systems, ideal in commercial or industrial settings where high current loads and safety must go hand in hand. This 3-pole, 300 A breaker is rated for up to 600 VAC (with a breaking capacity of 25 kA) and 250 VDC (50 kA interrupting capacity), making it a dependable device to protect your power distribution from overloads or short circuits. It combines reliable protection with installation versatility—and it’s built to last under demanding conditions.

Key Features and Benefits

• Thermal-Magnetic Trip Technology: Each pole includes a thermal element for gradual overload detection and a magnetic element for fast short-circuit response, giving you two levels of protection in one unit.
• Push-to-Trip Function: Lets a technician trip the breaker manually without coming into contact with energized parts, improving safety during maintenance or testing.
• Flexible Mounting Options: Supports both unit mount and I-Line setups, so you can drop it into many existing systems without reconfiguring your enclosure.
• Durable Construction: The molded case is built to resist wear, vibration, and electrical stress, giving dependable performance day after day.
• Eco-aware Design: Complies with Green Premium®, RoHS, and REACH standards, and avoids harmful substances like mercury and PVC, reflecting a commitment to environmentally responsible manufacturing.

Technical Specifications

• Model: LHL36300
  
• Poles: 3
  
• Rated Current: 300 A
  
• Voltage Rating: 600 VAC (Interrupting: 25 kA) / 250 VDC (Interrupting: 50 kA)
  
• Trip Technology: Thermal-magnetic
  
• Magnetic Trip Level: ~3,000 A
  
• Terminal Connection: Lug type (line & load)
  
• Dimensions (H × W × D): 11.00 in × 6.00 in × 5.84 in
  
• Torque Rating: 13 N·m (≈ 115 lbf·in)
  
• Terminal Capacity: AWG 1 to 600 kcmil
  

Material Compliance and Certifications

• Certifications: This breaker is built to meet rigorous international standards. It’s certified by UL, CSA, and IEC, ensuring it satisfies essential safety protocols and market requirements.
• Environmental Compliance: The materials are halogen-free where possible, and the design is free from regulators-restricted substances. With Green Premium® accreditation, you can confidently incorporate it into systems requiring transparency in environmental impact.
  

Where It Works Best

• The LHL36300 is perfect for high-demand applications in commercial buildings, manufacturing plants, data centers, or utility installations. Use it when reliability is nonnegotiable—especially in systems that face heavy loads, frequent switching, or potential fault conditions. It’s just as suitable for retrofits in existing switchgear as it is for new installations, thanks to its mounting flexibility. In short: anywhere you need durable, high-current protection that you can trust.