3SB3403-1RD is a 22mm pushbutton switch that is part of the Siemens Sirius series. It features a round flush button design, a flush black ring, 1 NC contact, and a red button flag. It is rated IP69K for protection against water, dust and other contaminants and has a front panel depth of 18.5 mm. The switch has a soldering or fast-on connection type, and is designed to be used in many different applications such as industrial and commercial equipment, machines, and HMI systems. The 3SB3403-1RD is UL and cULus certified, and is compliant with EN 60947-5-1 and EN 61058-1 standards.