I have a defective cut out with part # ESB716C1L on it. It's made of clear glass and it's about 1 inch long and about 1/4 inch diameter and cylindrical. It has 2 leads coming out of one end of it. It very closely resembles a neon lamp in shape and size. It looks like it has set of contacts inside like a switch. The company logo on this device is a white triangle with a letter "s" inside the triangle and a lightning bolt diagonally on both sides of the triangle. It is used in a fuel transfer pump made by GPI that runs on 120VAC. The motor actually runs on DC as there is a bridge rectifier inside the pump assembly and this cut out is mounted inside the motor next to the brushes. Power has to flow through this cut out to run the motor. I cannot find any reference to this part number anywhere online.