The Atlas Copco 1091-0394-01 Rotary Screw Pressure Switch is a replacement pressure switch for Square D controlled Atlas Copco rotary screw compressors. It monitors system pressure and provides a control signal to the compressor’s control circuit to regulate operation. The part number 1091-0394-01 identifies a compatible replacement for Atlas Copco equipment using Square D interfaces. Verify compatibility with your exact compressor model and control setup before installation.
