Sealey compressors belt drive 3hp with cast cylinders sealey sac2203b our top of the range single phase compressors are suitable for the professional workshop and are fitted with a genuine 3hp motor twin capacitors and a centrifugal switch aid trouble free starting on a good 13amp supply however on these models we recommend fitting a 16amp plug and connecting to a 20amp supply protected by a type c circuit breaker pumps feature heavy duty full cast cylinders capped by alloy heads for impr