MBS 3000-2021-A1AB08-0 is part of the Danfoss MBS 3000 series of pressure switches. This specific model is a compact pressure switch with NPT thread on both the inlet and outlet sides. It is suitable for use with hydraulic fluids, low viscosity air, and water up to a pressure of 100 Bar. It features a range from 0.2-6 Bar, an adjustable differential, and a single contact on the output. The part is switchable, so it can be used to enable/disable equipment or open and close valves.