Square D | MA36300CBA | Circuit Breaker | 300A | 3-Pole | 600V

Discover dependable power protection with the Square D MA36300CBA Circuit Breaker — a 300A, 3-pole solution crafted for serious three-phase systems up to 600V. Designed for maintenance, retrofit, and replacement projects, this breaker aligns with exact specifications to keep your electrical distribution running safely and reliably.

Why this Square D MA36300CBA stands out

When your panels demand precise compatibility and durable performance, the MA36300CBA delivers. Built to integrate seamlessly with existing Square D infrastructure, it helps you maintain consistent protection without the guesswork of cross-reference substitutions. The three-pole design provides comprehensive phase protection for three-phase circuits, while the 600V rating covers a wide range of commercial and industrial applications.

Key specifications at a glance

• Amperage: 300A
• Poles: 3-Pole
• Voltage: 600V
• Part number: MA36300CBA — best reference for compatibility

What problems it solves

• Reliable replacement for aging or failing breakers in Square D panels, minimizing downtime and maintenance headaches
• Accurate match for retrofit projects where exact specs are non-negotiable
• Consistent protection across all three phases, helping prevent unbalanced loads and electrical faults

Ideal use cases

• Industrial facilities and manufacturing environments with three-phase power distribution
• Retrofit projects in aging Square D panels where current hardware has reached its service life
• Maintenance and parts stock for service crews who require precise, compatible replacements

Practical guidance for purchasing and installation

Notes: Confirm fit and ratings before ordering. The part number MA36300CBA is the most reliable reference for compatibility with your existing Square D equipment. When planning a replacement or retrofit, verify panel type, bus configuration, and mounting style to ensure seamless installation and uninterrupted protection.

What to expect in use

With the MA36300CBA, you gain a robust, three-pole protective device designed to endure in demanding environments. This breaker supports stable fault interruption performance and aligns with Square D’s standards for performance and reliability, helping facilities run smoothly with fewer interruptions and more predictable maintenance planning.