LM3300L | Circuit Breaker | 300A | 3-Pole | 600V

LM3300L Industrial Circuit Breaker — 300A, 3-Pole, 600V

The LM3300L is a purpose-built industrial circuit breaker designed for maintenance, retrofit, and replacement projects where exact specifications matter. This 3‑pole unit delivers reliable three‑phase protection in demanding electrical environments, helping you quickly isolate faults and protect valuable equipment in your distribution panels.

Why choose the LM3300L for your panel upgrades

• Three-phase protection — a true 3‑pole configuration ensures synchronized interruption across all live conductors, reducing the risk of deltas and uneven loading during faults.
• Robust amperage for feeder protection — rated at 300A, making it well-suited for medium-to-large panel feeders, motor control centers, and line-side protection in industrial settings.
• High-voltage compatibility — 600V rating accommodates a wide range of industrial power distributions, supporting reliable performance in typical manufacturing and processing environments.
• Clear compatibility reference — the part number LM3300L is the best reference for matching your existing equipment. Confirm fit and ratings before ordering to ensure seamless replacement or retrofit.

Key specifications

• Amperage: 300A
• Poles: 3‑Pole
• Voltage: 600V
• Type: Industrial circuit breaker

Ideal use cases

• Maintenance outages on three‑phase panels where a direct 3‑pole 300A, 600V replacement is required
• Retrofit projects upgrading older switchgear to meet current protection standards
• Replacement parts for service fleets, ensuring quick, compatible swaps to minimize downtime

How it fits into your equipment lifecycle

Choosing the LM3300L means prioritizing compatibility and reliability. It’s designed to slot into panels and enclosures that expect this exact part number and rating, helping reduce installation guesswork and ensure consistent protection across your electrical distribution. Always verify fit and ratings with the exact LM3300L reference to keep your system compliant and protected.