Siemens SIRIUS ACT Complete Pushbutton Unit, Plastic, Red, 22mm, 1NO+1NC, Screw Terminals 3SU1100-0AB20-1BA0

Machine builders and panel technicians use this red momentary pushbutton as a start or stop command in control panels and operator stations. The flat red actuator sits in a black plastic front ring for a 22 mm mounting hole.

Key specifications

• Series: SIRIUS ACT
• Actuator type: Momentary pushbutton, flat button
• Actuator colour: Red
• Front ring material: Plastic, black
• Mounting diameter: 22 mm
• Contact configuration: 1 NO + 1 NC
• Terminal type: Screw terminals
• Illumination: No
• Degree of protection (front): IP66, IP67, IP69K
• NEMA rating (front): 1, 2, 3, 3R, 4, 4X, 12, 13
• Operating temperature: -25 to +70 °C
• Rated insulation voltage: 500 V
• Rated impulse withstand voltage: 6 kV
• Mechanical endurance: 10 million switching cycles
• Electrical endurance: 10 million switching cycles
• Material of enclosure: Plastic
• Standards: IEC 60947-5-1, UL, CSA, CE, CCC, EAC

Why choose it

The SIRIUS ACT range offers high mechanical and electrical endurance, making it suitable for frequent switching in industrial environments. The IP69K front protection allows use in washdown areas.

Ideal use cases

• Start/stop control in industrial machinery
• Operator panels and control stations
• Washdown environments requiring high ingress protection

Good to know

The unit is non-illuminated and uses screw terminals for secure wiring. The red colour is commonly used for stop or emergency stop functions, but this is a standard momentary pushbutton, not an emergency stop device.