Siemens SIRIUS ACT blanking plug 3SU1950-0FA80-0AA0

Panel builders and maintenance technicians use the Siemens SIRIUS ACT blind plug to close unused 22.3 mm mounting holes in control panels, pushbutton enclosures and operator stations. The flat black plastic cover keeps the front of the panel clean and prevents accidental contact with live parts behind the opening.

Key specifications

• Product type: Blind plug
• Series: SIRIUS ACT
• Design: Flat
• Mounting type: Front plate mounting
• Mounting diameter: 22.3 mm
• Material: Plastic
• Colour: Black
• Front protection rating: IP66, IP67, IP69K
• Front protection rating (NEMA): NEMA 1, 2, 3, 3R, 4, 4X, 12, 13
• Operating temperature: -25 to +70 °C
• Storage temperature: -40 to +80 °C
• Shock resistance: 10g / 11 ms
• Vibration resistance: 5 ... 500 Hz: 5g
• Standards: IEC 60947-5-1, EN 60947-5-1, UL 508, CSA C22.2 No. 14

Why choose it

The blind plug matches the SIRIUS ACT range and maintains the high protection rating of the enclosure. It snaps into the standard 22.3 mm hole without tools and stays secure under vibration and shock.

Ideal use cases

• Closing spare holes in control panels during commissioning
• Reserving positions for future switches or indicators
• Replacing damaged or missing plugs in existing installations

Good to know

The plug is made of black plastic and is suitable for industrial environments. It complies with relevant IEC, EN, UL and CSA standards.