LH36300 - 300 Amp Circuit Breaker

LH36300 - 300 Amp Circuit Breaker

Bring dependable protection to your electrical system with the LH36300. Engineered as a 3-pole, 300 A circuit breaker rated for 600 VAC, this unit is built to safeguard commercial and industrial installations against overloads and short circuits. Its thermal-magnetic trip mechanism ensures both gradual and sudden faults are handled precisely, reducing nuisance trips while keeping your system safe. The plug-in I-Line design simplifies installation, and the compact form respects confined panel spaces—perfect when uptime and efficiency matter most.

Key Features & Benefits

• High current capacity: Supports up to 300 amps, ideal for heavy power distribution and demanding loads
• Thermal-magnetic protection: Combines time-delay thermal sensing with magnetic short-circuit response to cover the full fault spectrum
• Strong interrupting capability: Rated to interrupt fault currents up to 25 kA @ 600 VAC, offering peace of mind under heavy stress
• Plug-in I-Line mounting: Fast, tool-friendly connection on the line side with sturdy lugs for the load side
• Compact footprint: Measures approximately 12.5″ × 6″ × 4″, allowing efficient layout in switchgear or panels
• Push-to-trip feature (manual test): Lets technicians safely trip the breaker during inspections without exposing live parts

Technical Specifications

• Model Number: LH36300
• Rated Current: 300 A
• Poles: 3
• Voltage Rating: 600 VAC
• Interrupting Rating: 25 kA @ 600 VAC
• Trip Type: Thermal-magnetic
• Magnetic Hold Current: ~1,500 A
• Magnetic Trip Current: ~3,000 A
• Dimensions: ~12.5″ (H) × 6″ (W) × 4″ (D)
• Connection Type: I-Line plug-in (line side), lugs (load side)

Material Compliance & Certifications

• The LH36300 meets rigorous safety and environmental standards. It's certified under UL, CSA, and IEC, ensuring broad compliance across regions. As part of Schneider Electric’s Green Premium line, it also adheres to RoHS and REACH regulations—minimizing hazardous substances and promoting sustainability.

Where It Works Best

• This circuit breaker is especially suited for commercial and industrial power systems where dependable protection is essential. Use it in:
• Power distribution panels
• Motor control centers
• Feeder circuits carrying heavy loads
• Applications needing reliable response to both slow overloads and fast short circuits