Square D | MX36300G | Circuit Breaker | 300A | 3-Pole | 600V

Meet the Square D MX36300G Circuit Breaker — a robust, 3-pole protection device rated for 300 amperes and up to 600 volts. Engineered for industrial reliability, this breaker is tailored for maintenance, retrofit, and replacement projects where exact compatibility matters.

Why choose MX36300G? Built to Square D’s exacting standards, this 3-pole breaker ensures coordinated protection in 3‑phase systems, reliably disconnecting all lines for enhanced safety. It’s the precise solution when you need a high-current, 600V-compatible breaker that fits your existing Square D panel architecture.

• Part number as your compatibility reference: MX36300G is the definitive reference for fitment — always align this with your panel specs before ordering.
• Amperage and voltage: 300 A rating supports heavy loads; compatible with 600 V systems in suitable panels.
• Configuration: 3-Pole design provides simultaneous disconnection of all conductors, delivering reliable protection in 3‑phase circuits.
• Applications: Ideal for maintenance, retrofit, and replacement where matching exact specs is required—ensuring you preserve system protection without overhauling hardware.

Practical notes for installation and planning:

• Verify that your enclosure and panel are designed to accept the MX36300G rating and form factor before ordering.
• Keep the part number on hand to ensure future replacements match the original equipment’s protective characteristics.
• Consider your overall protection strategy: ensure proper coordination with downstream protective devices and that the rating aligns with your system’s needs.

Designed for professionals who demand precise compatibility and dependable performance in demanding electrical environments, the Square D MX36300G is a strategic choice for safe, reliable power distribution in 3‑phase, 600V applications.