The 3SB3403-1QC is a three-pole pushbutton switch from Siemens. This switch is designed with a vertical operating direction, square flush actuator, and light gray color. It is designed to be used with the Siemens SIRIUS 3SB3 series control system and has a mechanical life expectancy of 500,000 cycles. It has a weather-resistant polyester casing, making it suitable for use in harsh environmental conditions. The 3SB3403-1QC is also UL- and CSA-listed. In addition, it has a built-in rotary knob for ease of use, a on/off function, and a latching action. The 3SB3403-1QC is ideal for applications such as controlling lights, machines, and other basic electrical systems.