Square D Q2M3110MB 110A 3-Pole 240 V Circuit Breaker

Meet the Square D Q2M3110MB—a dependable, high‑capacity protection device built for demanding 3‑phase 240 V electrical systems. With a precise 110 A current rating and three poles, this circuit breaker delivers consistent overcurrent protection where reliability matters most. Part number Q2M3110MB identifies this specific configuration within the Square D family, making it an exact match for compatible panels and distribution setups.

Key specifications

• Current rating: 110 A
• Poles: 3
• Voltage rating: 240 V
• Part number: Q2M3110MB

What this means for your system

This 3‑pole, 240 V circuit breaker provides robust protection for three‑phase circuits, helping prevent damage from overloads and short circuits. Its 110 A rating makes it suitable for protecting motor feeders, branch circuits, or other demanding loads in commercial or light‑industrial environments where reliable electrical protection is essential.

Use cases

• Protect three‑phase motor feeders and distribution circuits operating at 240 V
• Serve as a main or feeder protection device in panels designed to accept Q2M series breakers
• Provide predictable, repeatable tripping behavior for critical equipment in service rooms, workshops, or light industrial spaces

Why this model stands out

The Q2M3110MB variant is a precise fit for systems requiring a 110 A, 3‑pole solution at 240 V. By matching the exact amperage and pole configuration, you ensure consistent protection characteristics, ease of replacement, and streamlined stocking for maintenance and repairs.

Installation and safety notes

Confirm compatibility with your panel and local electrical codes before installation. Follow the panel manufacturer’s instructions for mounting and wiring, apply proper torque to connections, and verify correct trip operation after installation to maintain safe, reliable service.