Need to replace a breaker in your Square D QO electrical panel? This is the one. It's a brand new, never-installed 20-amp, 2-pole circuit breaker (model QO220). Perfect for 240-volt circuits like those for air conditioners, water heaters, or dryers. Always make sure your panel is compatible and turn off the main power before doing any electrical work. If you're not sure, it's best to call an electrician. Keep your home's electrical system running safely with a genuine Square D replacement.