3SU1130-2BF40-1BA0
ActiveSIRIUS ACT 2-Position Key Switch
Siemens SIRIUS ACT 2-position key-operated selector with metal front ring.
Common Applications
Key switch for Siemens panels. Prevents unauthorized mode changes. Metal front ring matches the premium SIRIUS ACT aesthetic. TIA Portal configurable with AS-Interface.
Specifications
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Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
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Maintained, key removable
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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
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Contact Configuration
1NO + 1NC: One circuit closes and one opens when pressed. Common for start buttons that also signal 'running' state.
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1NO+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
IP67: Dust-tight and survives temporary water submersion (1m for 30 min). Handles oil splashes, steam cleaning, and rain.
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IP67
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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 front ring
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Installation Quick Reference
Panel cutout: 22mm. Align the selector positions with the desired panel markings before tightening.
Contact blocks: Attach one contact block per position. Wire each to a separate PLC input for position feedback. A 2-position switch needs 1-2 blocks; 3-position needs 2-3.
Dimensions
Wiring Diagram
Troubleshooting
Not responding to input
Check wiring continuity with a multimeter. Verify the contact block is properly seated. Inspect terminals for loose connections.
Where to Buy
Price range
$4.08 — $14.05
across 2 distributors
Quick Specs
- Actuator Function
- Maintained, key removable
- Certifications
- UL, CSA, CE
- Contact Configuration
- 1NO+1NC
- Cutout Diameter
- 22mm
- IP Rating
- IP67
What People Are Saying
“Key switch for Siemens panels. Prevents unauthorized mode changes. Metal front ring matches the premium SIRIUS ACT aesthetic. TIA Portal configurable with AS-Interface.”