Built-in thermal overload protection with automatic reset upon cooling. Ideal for systems with tank monitoring for overfill and protection against dry-run while emptying. Retrofit ready for existing wake and watersport boats with approved electrical and plumbing specifications. Improved impeller compounds designed for short-duration dry-run events to keep you on the water longer. High performance and high output for intermittent duty cycles. Connection: External thread: 1-1/2″ NPTF. F45-12. 12 volt.