Marketing InformationFranklin electric 1 phase controls are designed and optimized specifically for Franklin electric motors. Controls are an integral part of a submersible motor power system. Rigorous component testing ensures the most robust products in the industry. These highly engineered control boxes are designed for use with Franklin electric three-wire, 1 phase submersible motors 1/3 to 1 hp. Quick-disconnect (QD) boxes make troubleshooting simple by automatically disconnecting the control components from the system when the lid is removed. Solid state switching, with the QD relay, provides longer life than voltage relays and improves the operation of the system. QD and capacitor run control (CRC) boxes offer the same functionality, but CRC boxes feature a run capacitor for smoother motor operation.