The standard IS10M pressure switch cannot be set to 0.4 to 0.45 MPa because 0.4 MPa is the upper limit of the set pressure range.
For AC-A/AC-B series modular F.R.L units with a white body, the pressure switch must be replaced with an IS10M-□-6-A pressure switch (set pressure: 0.1 to 0.6 MPa).

IS10M is a pressure switch with a linear mechanical set point indicator, for modular installation with SMC's FRL units.  The switch housing attaches to a spacer that clamps inline with the FRL.  The housing assembly includes a reed switch activated by a piston-mounted magnet.  A screw adjusts the spring loading the piston to set the switch point. 

IS10M is a pressure switch with a linear mechanical set point indicator, for modular installation with SMC's FRL units.  The switch housing attaches to a spacer that clamps inline with the FRL.  The housing assembly includes a reed switch activated by a piston-mounted magnet.  A screw adjusts the spring loading the piston to set the switch point. 

Style: Pressure Switch, Body Size: 20 (AC20), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 50 (AC40-06), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 60 (AC50, AC60), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: AC20, Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: AC30, Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: AC40-06, Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: AC50, AC60, Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 20 (AC20), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard

Style: Pressure Switch, Body Size: 20 (AC20), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard

Style: Pressure Switch, Body Size: 20 (AC20), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 6 (0.1 to 0.6 MPa), Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: MPa, Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: L (3m), Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard

Style: Pressure Switch, Body Size: 30 (AC30), Set Pressure Range: 0.1 to 0.4 MPa, Lead Wire Length: 0.5m, Pressure Unit of the Scale Plate: P (MPa/psi Dual Scale), Body Type: Standard