Square D Q2M32255700 225A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Square D Q2M32255700 — a rugged 225A, 3-pole, 240 V circuit breaker built for demanding industrial power distribution. This unit integrates a potential transformer, delivering precise sensing and streamlined protection for three‑phase systems where accurate current measurement and relay coordination are essential.

• Current rating: 225 A
• Poles: 3
• Voltage rating: 240 V
• Configuration: Circuit breaker with integrated potential transformer
• Manufacturer: Square D
• Part number: Q2M32255700

This breaker isn’t just about shutoff protection; it’s designed to streamline monitoring and control in complex electrical setups. The built-in potential transformer simplifies connections to metering equipment and protective relays, reducing wiring complexity while improving measurement accuracy across all three phases. For facilities that rely on precise load monitoring and fast, coordinated protection, this unit offers a tangible workflow advantage.

Use cases that benefit from a 3-pole, 240 V configuration with a potential transformer

Industrial panels, motor control centers, and feeder circuits that require reliable, synchronized protection across all three phases. In environments where real-time current sensing informs safety systems, energy management, or fleet-wide fault detection, this breaker provides both the interruption capability and the measurement input you need.

Why this setup stands out

Compared with separate protection and metering components, the Square D Q2M32255700 consolidates critical functions into a single device. This integration reduces panel space, simplifies wiring, and minimizes potential points of failure, all while staying aligned with Square D’s proven reliability and design philosophy.

Installation and compatibility tips

• Designed for Square D panels that support Q2M-style breakers in multi‑pole configurations.
• Confirm panel acceptance and conductor torque requirements according to the manufacturer’s guidance.
• Plan for proper exposure of the potential transformer connections to ensure accurate sensing and relay input signals.
• Coordinate with your protection and metering schemes to maximize coordination and minimize nuisance trips.