Square D | MHL3680036DC1128 | Circuit Breaker | 800A | 3-Pole | 600V

Meet the Square D MHL3680036DC1128 — a high-capacity, three-pole circuit breaker designed for demanding 600V, 3-phase systems. Built to support maintenance, retrofit, and replacement projects, this unit delivers reliable overcurrent protection when your electrical infrastructure requires an 800A main or feeder interruption. Crafted for durability in industrial environments, it’s engineered to keep critical loads and motors safeguarded while you optimize panel performance.

• Amperage: 800 A
• Poles: 3-Pole
• Voltage: 600 V

Why this model stands out for professionals solving real-world power challenges:

• Ideal for large feeders and motor circuits where 800A capacity is required, helping prevent equipment damage and unplanned downtime.
• Specifically suited for commercial, industrial, and utility-room environments where standard 600V systems are deployed.
• Provides balanced protection across all three phases, reducing the risk of phase imbalances and ensuring dependable interruption when faults occur.
• Square D builds reputation for robustness in demanding installations, supporting consistent performance through lifecycle maintenance and retrofit projects.

Ideal use scenarios

This circuit breaker is well-suited for:

• Retrofits and replacements in 600V, 3-phase distribution panels where an 800A main or feeder is required.
• Maintenance programs that need a compatible, durable spare to minimize downtime during service outages.
• New installations or upgrades in industrial settings where large motor drives and heavy loads demand high-capacity protection.

Fit, compatibility, and ordering guidance

Before you order, verify that this exact part number—MHL3680036DC1128—matches your panel and downstream equipment. The part number is the most reliable reference for compatibility, and measurements should align with your system’s ratings to ensure safe, compliant operation.

If you’re replacing an existing Square D unit or upgrading to higher amperage protection, this 800A, 3-pole, 600V breaker offers a robust solution designed to support demanding loads with dependable protection. For best results, consult your panel manufacturer’s guidelines and confirm that the installation environment—voltage, phase configuration, and enclosure rating—supports this model.