Square D | MXF36300 | Circuit Breaker | 300A | 3-Pole | 600V

Introducing the Square D MXF36300 circuit breaker — a rugged 300A, 3-pole device built to meet the demands of modern electrical systems. Designed for maintenance, retrofit, and replacement projects, this breaker offers the exact specifications you need to keep your panel running safely and reliably.

Key specifications at a glance

• Amperage: 300 A
• Poles: 3-Pole (three-phase)
• Voltage rating: 600 V
• Best compatibility reference: Part number MXF36300

Notes: Confirm fit and ratings before ordering. The MXF36300 part number is your most reliable reference to ensure compatibility with your Square D panels and existing protection schemes.

What makes this breaker unique

• OEM-aligned performance: The MXF36300 is chosen for applications where matching your original equipment’s protection characteristics matters, helping to maintain consistent trip and interruption behavior in a 3-phase system.
• Streamlined retrofit and replacement: With a clear compatibility reference, technicians can procurement-time reduce guesswork and minimize downtime during panel upgrades or component swaps.
• Scale for demanding systems: Rated for 300 A, it supports robust distribution and load-handling in industrial environments while preserving safe, predictable operation at 600 V.

Ideal for industrial panels, commercial power distribution, and service upgrades where a reliable 3-pole circuit breaker is required to protect 3-phase circuits. If you’re refreshing an existing Square D installation or performing a retrofit, MXF36300 offers the precise specs and proven reliability you need from a trusted name in electrical protection.