Westinghouse | MA3300 | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On

Meet the Westinghouse MA3300, a rugged circuit breaker built for heavy-duty electrical panels where reliable overcurrent protection is non-negotiable. Designed for maintenance, retrofit, and replacement projects, this 300A, 3-pole unit ensures your three-phase system stays safeguarded without sacrificing compatibility or performance.

• Amperage rating: 300A, providing strong protection for large loads and essential equipment.
• Poles: 3-Pole configuration for 3-phase circuits, delivering balanced protection across all phases.
• Voltage rating: 600V maximum, suitable for industrial and commercial power distribution.
• Mounting: Bolt-On design for secure, durable installation and straightforward retrofits in compatible panels.

The MA3300 is purpose-built for situations where exact specifications matter. Its bolt-on construction simplifies replacement tasks and minimizes downtime, making it an ideal choice for service upgrades, panel refurbishments, and new installations that require a dependable Westinghouse solution.

• Who it’s for: electrical contractors, facilities maintenance teams, and industrial operators tackling panel modernization or equipment protection upgrades.
• What problems it solves: provides robust overcurrent protection for 3-phase systems, supports retrofit projects where matching specs are critical, and offers a reliable substitute in compatible panels.
• How it compares to alternatives: with a bolt-on design and a clear 3-pole, 600V configuration, it streamlines installation and ensures precise compatibility in applications that require the MA3300’s exact form factor and ratings.

Practical tips for a smooth setup:

• Always confirm fit and ratings before ordering—the part number MA3300 serves as the best reference for compatibility with your panel.
• Follow standard electrical safety practices: isolate power, verify conductor sizes, and use the manufacturer’s torque guidelines for mounting hardware.
• Document the replacement process and keep the MA3300 on hand for future retrofit or maintenance projects to minimize downtime.

Choose the Westinghouse MA3300 when you need a dependable, purpose-built circuit breaker that aligns with established three-phase systems, supports retrofit and replacement workflows, and delivers consistent protection at a 600V rating. It’s a thoughtful, task-focused solution designed to integrate seamlessly into compatible panels and keep critical electrical systems running smoothly.

Note: Confirm fit and ratings before ordering. The part number MA3300 is the most reliable reference for compatibility with your equipment.