Square D | Q2M3125MTH | Circuit Breaker | 125A | 3-Pole | 240V

When your Square D panel needs dependable protection for a 125-amp circuit, the Q2M3125MTH circuit breaker delivers precise, reliable performance. Designed for maintenance, retrofit, and replacement projects, this 3-pole, 240V unit ensures your electrical system stays safe and compliant while minimizing downtime.

Key specifications

• Amperage: 125 A
• Poles: 3-Pole
• Voltage: 240 V
• Part number: Q2M3125MTH

Why this model matters

• Direct compatibility with Square D panels that require the Q2M3125MTH reference, eliminating guesswork during replacements.
• A three-pole design ideal for protecting 3‑phase circuits or multi-hot configurations common in commercial and industrial settings.
• 125 A protection threshold provides robust interrupt capability for demanding load profiles without sacrificing safety margins.

Ideal use cases

• Maintenance cycles where a precise, in-spec replacement is essential to keep panels up and running.
• Retrofit projects updating older installations to current 125 A, 3‑pole, 240 V protection.
• New installations in systems that rely on three hot conductors in 240 V configurations.

Fit, compatibility, and practical tips

Always verify fit and ratings before ordering. The Q2M3125MTH part number is the most reliable reference for compatibility with Square D panels and assemblies. To ensure a smooth install, match the breaker to the panel’s rated voltage, pole configuration, and amperage, and confirm that the panel supports a 3‑pole, 240 V device in your circuit arrangement.

With the right part in hand, you can reduce downtime, simplify maintenance schedules, and keep your electrical distribution running smoothly. This 125 A, 3‑pole, 240 V Square D breaker stands out for precise compatibility and reliable performance in demanding environments.