PowerPacT M, P, and R-Frame circuit breakers offer a whole range of field installable accessories, allowing modifying the circuit breaker at any time in the design and build cycle. This handle mechanism is a 4 inch handle depth for NEMA 1/3/3R/4/12. This handle is for use with 30-200A 9422 switches and all circuit breaker mechanisms. This product complies with UL standards.