3SU1130-0AB20-1CA0
ActiveSIRIUS ACT Red Flush Push Button (1NC)
Red flush momentary push button, Siemens SIRIUS ACT series. 22mm cutout, IP66/IP67/IP69K, metal housing, with 1NC contact.
Common Applications
Red stop button from the SIRIUS ACT range. Paired with the green 3SU1130-0AB40-1BA0 on Siemens-controlled machinery. The 1NC contact is standard for stop functions. Found on Siemens-automated lines in automotive manufacturing, pharmaceutical filling lines, and semiconductor fab equipment. The metal front ring matches the premium aesthetic expected in clean-room and pharmaceutical environments.
Commonly Found On
Specifications
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Actuator Shape
The physical shape of the pressable surface.
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Round
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Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
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Flush
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE, ATEX, IECEx
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Red
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Contact Configuration
Normally Closed — circuit is on until you press. Standard for stop/emergency functions. Wire in series with safety circuits.
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1NC
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Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
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22mm
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IP Rating
IP69K: Dust-tight and withstands high-pressure, high-temperature steam jets. Built for food processing washdown environments.
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IP66/IP67/IP69K
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Material
The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.
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Metal
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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Panel
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Max Operating Temp
Highest temperature the button is rated to operate in.
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70°C
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Min Operating Temp
Lowest temperature the button is rated to operate in.
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-25°C
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Specs with this icon are linked to the manufacturer's original source page
You'll Also Need
This is a modular component. For a complete assembly, you may also need:
Compatible Alternatives
These products are functionally equivalent cross-references from other manufacturers.
Installation Quick Reference
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Dimensions
Wiring Diagram
Troubleshooting
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Where to Buy
Price range
$2.01 — $65.59
across 4 distributors
Quick Specs
- Actuator Shape
- Round
- Actuator Type
- Flush
- Certifications
- UL, CSA, CE, ATEX, IECEx
- Color
- Red
- Contact Configuration
- 1NC
What People Are Saying
“Yes, they cost 30-40% more than Eaton or Schneider equivalents. But the IP69K rating is standard, not an upcharge. The metal housing is noticeably more solid. For food & bev or pharma where washdown is daily, the math works out.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
3SU1130-0AB20-1CA0 Siemens Product Page
https://sieportal.siemens.com/en-ww/products-services/detail/3SU1130-0AB20-1CA0
Accessed March 28, 2026