Square D | Q2M3175MB | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On

Meet the Square D Q2M3175MB circuit breaker — a purpose-built solution for demanding electrical systems that demand reliable protection. Rated at 175A, this 3-pole unit operates at 240V and features a bolt-on mounting design for secure, field-ready installation in compatible Square D panels. When you need a precise match for maintenance, retrofit, or replacement, this breaker delivers a trusted, industrial-grade performance.

Key specifications and design advantages

• Amperage: 175A — robust protection for high-load circuits in commercial or light-industrial applications.
• Poles: 3-pole configuration — designed to protect 3-phase systems commonly found in motors, compressors, and other multi-phase equipment.
• Voltage: 240V — appropriate for standard 3-phase service in compatible panels.
• Mounting: Bolt-On — provides a secure, durable connection in panels that require bolt-on style breakers, reducing the risk of vibration or loosening over time.
• Part reference: Q2M3175MB — using the exact part number ensures compatibility with the intended Square D panel family and minimizes dock-to-desk guesswork during replacement.
• Best-use scenarios: Ideal for maintenance, retrofit, or replacement projects where the exact spec, mounting method, and form factor matter for continued reliability.

Why this breaker stands out

• Precise compatibility with Square D bolt-on panel architectures, reducing installation time and potential electrical gaps that can occur with generic substitutes.
• Clear, unambiguous reference to the exact part number (Q2M3175MB), giving you confidence in fitment and long-term reliability.
• Designed for proactive maintenance and retrofit projects, helping facilities minimize downtime by using a breaker that mirrors the original protection profile.

Ideal use cases and applications

• Replacing a failed or aging 3-pole 240V 175A breaker in compatible Square D enclosures.
• Retrofit projects where an exact 175A, 3-pole, 240V bolt-on unit is required to maintain system protection and trip characteristics.
• Spare-part planning for service fleets that manage Square D panels and seek to standardize replacements around a single part reference.

Installation and compatibility notes

Before ordering, verify fit and ratings to ensure seamless integration with your panel. The part number Q2M3175MB is the best reference for compatibility, helping you avoid mismatches in form factor, mounting method, or electrical characteristics. For uncertain installations, work with a licensed electrician or consult your panel’s installation guide to confirm that the bolt-on configuration aligns with your enclosure’s design and bus connections.

Practical tips for best results

• Keep a small inventory of the exact part number Q2M3175MB on hand for planned maintenance windows to minimize panel downtime.
• Document the panel model and breaker reference in your maintenance records to facilitate future replacements without guesswork.
• Handle all installations with the power fully shut off and follow standard electrical safety practices; bolt-on mounting requires secure hardware and proper torque according to the panel’s specifications.