Square D | Q2LH2125 | Circuit Breaker | 125A | 2-Pole | 240V

Meet the Square D Q2LH2125 circuit breaker—a dependable, 125-amp, 2-pole solution engineered for 240-volt panels. Built to integrate with existing Square D installations, it simplifies maintenance, retrofit, and replacement projects by delivering the exact specifications your system requires.

Designed for real-world electrical distribution, this 125A, 2-pole, 240V breaker helps you protect circuits with precision and confidence. When your panel calls for a matching part, the Q2LH2125 is the right reference to ensure proper trip characteristics and reliable performance.

Key specifications

• Amperage: 125 A
• Poles: 2-Pole
• Voltage: 240 V
• Part number: Q2LH2125
• Compatibility note: Confirm fit and ratings before ordering—the part number is the best reference for compatibility.

Why choose this Square D breaker

Unlike generic replacements, the Q2LH2125 is lineage-matched to Square D panels, ensuring consistent trip curves and reliable performance in daily operation. Its design minimizes downtime during service and reduces the guesswork involved in retrofits or panel upgrades. If you’re maintaining an aging distribution system or upgrading to a higher-capacity breaker within a compatible Square D lineup, this model provides a precise, safe fit.

Ideal use cases

• Maintenance: replace worn or nuisance-tripping breakers without compromising panel integrity.
• Retrofit: upgrade or reconfigure circuits in Square D panels that require a 125A, 2-pole, 240V device.
• Replacement: restore protection quickly after a fault event using a compatible part number for seamless compatibility.

Practical installation tips

Before ordering, double-check the panel’s labeling and the system’s voltage and current requirements. Follow local electrical codes and have a qualified electrician perform installation. Always shut off main power and verify absence of voltage on the circuit before handling the breaker.

For a reliable, compatible solution that aligns precisely with your Square D panel specifications, the Q2LH2125 125A 2-Pole 240V circuit breaker is a straightforward choice that keeps electrical systems safe and compliant.