Square D | Q4L3350 | Circuit Breaker | 3-Pole

Square D Q4L3350 3-Pole Circuit Breaker delivers trusted protection in maintenance, retrofit, and replacement projects where exact compatibility matters. This 3-pole model is designed to work within compatible Square D panels, providing reliable three-phase protection and a straightforward path to restoring electrical system integrity.

• Genuine Square D part ensures consistent performance and compatibility within Square D installations.
• 3-Pole configuration supports three hot legs in suitable electrical systems, ideal for three‑phase or multi‑wire circuits requiring a single, common-trip device.
• Retrofit and replacement ready—matched form factor and mounting to minimize downtime during upkeep or modernization.
• Best reference is the part number—Q4L3350 is your reliable guide for compatibility; always confirm fit and ratings before ordering.

How to verify compatibility

Start with your panel’s model and labeling, then cross-check against the Q4L3350 part number. The part number is the clearest reference for compatibility, and confirming the required ratings with your panel’s data sheet helps prevent mismatches in voltage, current, or trip characteristics.

Ideal use cases

• Maintenance on existing Square D panels that require a 3‑pole breaker.
• Retrofits that switch to three‑pole protection for expanded or reconfigured circuits.
• Replacement for a failed 3‑pole unit in compatible Square D assemblies, ensuring minimal downtime.

Practical installation tips

• Power down the system and follow proper lockout/tagout procedures before replacing any breaker.
• Have the panel model, service rating, and bus configuration on hand to confirm fit.
• Keep a spare Q4L3350 on hand for planned maintenance or unexpected outages to reduce service time.

What to expect from the Q4L3350

With this 3‑pole circuit breaker in your toolkit, you gain a dependable, factory‑certified component that integrates smoothly with existing Square D enclosures, minimizes compatibility risk, and supports efficient restoration of service after maintenance. It’s a practical, ready-to-deploy solution for technicians, facilities managers, and service teams maintaining three‑phase electrical systems.