Schneider Electric Xb4Fw35B5.
5mm; Contact Configuration:SPST-NO, SPST-NC; Switch Operation:Momentary Spring Return; Pushbutton Actuator Style:Round Flush.PB SW, SPST-NO/NC, 6A, 120V, ORG, PANEL; Product Range:Harmony XB4 Series; Panel Cutout Diameter:30.