Square D | LCL36300 | Circuit Breaker | 300A | 3-Pole | 600V

Square D LCL36300 — 300A, 3-Pole, 600V Circuit Breaker

Designed for demanding electrical environments, the Square D LCL36300 circuit breaker delivers dependable overcurrent protection for three‑phase power distribution. This 300‑amp, 3‑pole unit is built to support high‑current feeders in commercial and industrial panels, ensuring safe shutdown and reliable operation when faults occur across all phases.

Key specifications at a glance

• Amperage: 300A
• Poles: 3‑Pole
• Voltage rating: 600V
• Part number: LCL36300

Notes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility when matching breakers to existing panels, buses, and mounting provisions.

Why this model stands out

• Three‑phase protection: The 3‑pole configuration provides synchronized interruption across all phases, reducing the risk of unbalanced current during faults.
• High‑current reliability: With a 300A rating, it’s well suited for demanding feeders and equipment circuits in commercial and light industrial settings.
• 600V capacity: Compatible with standard industrial distribution systems that operate at up to 600 volts, helping simplify system design and replacement decisions.
• Maintenance, retrofit, and replacement readiness: Specifically identified for maintenance, retrofit, or replacement projects where exact specifications matter, making it easier to restore or upgrade existing installations.

Ideal use cases

• Replacing a worn or degraded breaker in a three‑phase panel where a 300A, 600V rating is required.
• Retro fitting older switchgear or distribution panels to maintain safety margins and current handling capabilities.
• Maintenance workflows that demand exact spec matching to minimize panel downtime and ensure continuity of protection.

Compatibility and installation considerations

Because compatibility hinges on exact panel and bus configurations, use the LCL36300 part number as the definitive reference when sourcing or cross‑checking replacements. Before ordering, verify that your panel labeling, mounting footprint, and trip characteristics align with this model to avoid mismatches and extended downtime.

How it compares to alternative protective solutions

For systems requiring dependable, three‑phase overcurrent protection at 600V, the Square D LCL36300 offers a direct, purpose‑built solution that aligns with standard industrial practices. When replacing aging equipment or retrofitting existing gear, choosing the exact part number ensures interchangeability with current breakers and minimizes wiring or mounting adaptations.

Practical tips for best results

• Always cross‑verify the exact panel model, bus configuration, and mounting type against the LCL36300 specifications before purchase.
• Keep the part number handy during maintenance records to streamline future replacements or upgrades.
• Schedule professional installation to ensure proper torqueing, secure mounting, and correct electrical clearance in accordance with local codes.