Rule Industries 37A SuperSwitch Mercury Free Bilge Pump Float Switch without Fuse Holder

Rule brand OEM SuperSwitch Float Switch P/N 37A delivers automatic bilge pump control. This float switch monitors water levels in your boat's bilge and triggers your electric pump to start when water rises above a preset threshold, then stops automatically once the bilge drains to the lower level. Engineered for reliable, hands-free operation—your pump runs only when needed, protecting your vessel