Square D | MA363501121 | Circuit Breaker | 3-Pole | 600V

When electrical reliability matters most, the Square D MA363501121 Circuit Breaker delivers precise protection for 3-phase systems at up to 600 volts. Built for maintenance, retrofit, and replacement projects, this 3-pole device is crafted to meet exact specifications where compatibility is non-negotiable.

Key compatibility note: the part number MA363501121 is the best reference for ensuring a perfect fit. Always confirm fit and ratings before ordering to prevent downtime and ensure seamless panel integration.

What makes the MA363501121 stand out

• Three-pole protection designed for balanced interruption across all phases in three-phase feeders.
• 600V rated capability suitable for a wide range of industrial and commercial electrical distributions.
• Direct-fit compatibility with Square D panels and enclosures that use this form factor, simplifying retrofits and replacements.
• Maintenance-ready a dependable choice for stock-and-replace scenarios, reducing downtime during service windows.

Key specifications

• Poles: 3-Pole
• Voltage: 600V
• Part reference: MA363501121

Ideal use cases

Best suited for industrial and commercial environments requiring robust three-phase protection. Practical applications include:

• Panel maintenance and retrofits where existing equipment aligns with a 3-pole, 600V specification
• Upgrading to a three-pole protection scheme in compatible systems
• Replacement of aging or failed breakers within Square D installations that match the MA363501121 form factor

How to verify compatibility and install with confidence

Start with the part number: MA363501121. This is your most reliable reference for compatibility. Before ordering, verify:

• Your system requires a 3-pole breaker for three-phase protection
• The panel’s voltage class and mounting interface match the 600V, Square D form factor

Practical tips for optimal performance

• Keep an exact-match spare (MA363501121) on hand to minimize downtime during planned maintenance
• Document the part number in your panel inventory to ensure future replacements remain identical

With the Square D MA363501121, you get dependable, compatible circuit protection that fits seamlessly into your existing Square D ecosystem—protecting your equipment, your people, and your uptime.