Description
The Siemens Industrial Controls 3RV2021-4BA10 Screw MSP SO is a manual motor starter and protection system that used to protect electric motors against overload and short-circuit conditions. The unit has an adjustable protection of 14 to 20 amperes to enable the internal trip mechanism to cut off the circuit in case the current is more than the set value applied in HVAC systems. It is located in the equipment control panel and is a combination of manual switching and thermal and magnetic protection to control and protect the equipment that is driven by a motor during operation.
