The Cutler Hammer HACR 2 Pole 40A Circuit Breaker CH240R is a standard circuit breaker made of copper, with a current rating of 40 Amps and a voltage of 240 Volts. It is certified by CSA and NEMA standards, and has a compact size of 1.5 x 3.4 x 3.2 inches. This product is designed for home improvement projects, specifically in building and hardware, and is suitable for use in drywall construction. With a customer review rating of 4.6 out of 5 stars, this circuit breaker is reliable and efficient for various electrical work in residential settings.