Square D | LI36450 | Circuit Breaker | 450A | 3-Pole | 600V

Meet the Square D LI36450 circuit breaker — a robust, genuine protection solution engineered for demanding electrical systems. This 450A, 3-pole, 600V unit is ideal for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring your three-phase power stays safe and reliably controlled.

Key specifications

• Amperage: 450A
• Poles: 3-Pole
• Voltage rating: 600V

Why this matters

Choosing the authentic Square D LI36450 guarantees precise compatibility with your panel and electrical system. The part number is the best reference for ensuring proper fit, bus connections, and trip characteristics, which helps maintain correct protection coordination and minimizes downtime during replacements. Using this exact model preserves the intended performance and safety standards of your 3-phase, 600V distribution network.

Ideal use scenarios

• Repair or replacement in existing Square D panelboards that require a 450A, 3-pole, 600V breaker
• Retrofits and capacity upgrades for three-phase 600V distributions in industrial settings
• Feeder protection for heavy machinery, manufacturing lines, and critical equipment in commercial facilities

Practical benefits

• Direct, authentic compatibility simplifies sourcing and reduces risk of misfit parts
• Matched amperage and voltage ratings help ensure reliable tripping behavior under fault conditions
• Supports consistent protection across your three-phase system, helping safeguard equipment and personnel

Installation and safety notes

• Verify fit and ratings before ordering — LI36450 is the best reference for compatibility
• Have a licensed electrician perform installation, following proper lockout/tagout procedures
• Ensure correct torque on terminal connections and adherence to your panel’s installation guidelines
• Confirm your system is indeed a 3-phase, 600V setup to match the breaker’s specifications