Rule SuperSwitch Float Switch [37A]SuperSwitch Float Switch Now backed by a 5 year warranty, the non mercury SuperSwitch is designed for the toughest applications. Design includes marine grade 14 gauge blocked wire, larger float for increased buoyancy, removable base for easy servicing and a snap switch design capable of handling pumps drawing up to 20 Amps. WARNING: This product can expose you to chemicals including STYRENE which is known to the State of California to cause cancer.