Siemens, Yellow, Pull-To-Unlatch Round Head Emergency Button. Mounting Type: Panel Mount. Normal State Configuration: NC/NO. Cutout Diameter: 22mm. Supply Current: 10 A. Auxiliary Contacts: 2. IP Rating: IP66, IP67, IP69, IP69K. Push Button Actuation: Latching. Supply Voltage: 500 V ac/dc. Series: SIRIUS ACT. Depth: 85mm. Dimensions: 85 x 119 x 85 mm. Push Button Material: Plastic. MPN: 3SU1801-2NG00-2AA2