Square D QOB250-1021 50A 2-Pole 240 V Circuit Breaker

Square D QOB250-1021 50A 2-Pole 240 V Circuit Breaker is a two-pole protective device designed to shield 240-volt branch circuits from overloads and faults. With a 50-amp rating, this Square D breaker handles higher-current loads while keeping your electrical system within safe limits. Part number QOB250-1021 denotes an exact replacement that preserves the original electrical characteristics and mounting compatibility of compatible Square D panels.

In practice, it interrupts current on both hot legs when an overload or short occurs, isolating the affected circuit and preventing damage to wiring, outlets, and connected devices. This is essential for safely powering 240V appliances and equipment in residential or light commercial settings.

• Part Number: QOB250-1021
• Current rating: 50 A
• Poles: 2
• Voltage rating: 240 V

Ideal for 240V branch circuits such as air conditioning units, electric water heaters, heat pumps, or other high-current loads in homes and small businesses where dedicated 240V protection is required.

Ensure your panel accepts a QOB-series two-pole breaker and that the bus connections align with the unit's contact points. When installing, follow local electrical codes and panel manufacturer guidelines. Turn off the main power and verify there is no voltage present before replacement. Use proper mounting practices to ensure reliable operation and to minimize nuisance trips.

Choosing the Square D QOB250-1021 means precise fit and reliable performance with your existing Square D components, reducing the risk of compatibility issues that often come with aftermarket replacements. It preserves the electrical characteristics needed to protect 240V circuits, helping you maintain safe, code-compliant protection for your loads.