Siemens 3SU SIRIUS ACT replacement guide
Siemens 3SU SIRIUS ACT operator-control parts should be sourced by exact article number. Similar-looking pushbutton, selector, contact, LED, and accessory parts can vary by voltage, color, terminal style, mounting, holder compatibility, and panel assembly.
Start with the complete Siemens article number
Record the full article number from the installed component or machine bill of materials. Outdwella examples include 3SU1400-1AA10-1PA0, 3SU1401-1BF20-1AA0, 3SU1401-1BH00-1AA0, and 3SU1900-0AC81-0AA0.
Electrical and mechanical checks
- Confirm voltage rating, AC or DC circuit requirements, and wiring diagram.
- Check LED color or operator function against the machine standard.
- Verify screw or spring terminal style, holder compatibility, actuator pairing, and front-plate or enclosure mounting.
- Confirm panel cutout, environmental rating, and clearance before installation.
Condition selection
Outdwella uses New and Used in Great Condition where available. Most Siemens 3SU control-device pages currently use New when unused replacement hardware is required. Used in Great Condition may be used for appropriate legacy replacement stock when tested hardware is acceptable.
Regional sourcing
For North America, Europe, Australia, and the Middle East, check landed cost, import documentation, taxes, and lead time. European pricing may sit above baseline USD because VAT, duties, import handling, and regional fulfillment assumptions differ from other regions.
FAQ
Can I choose by button or lens color only? No. Color matters, but the full article number, voltage, terminals, mounting, and assembly fit determine the replacement.
Why are compact and hyphenated Siemens numbers both shown? Buyers may search either format. Both formats help connect search intent to the correct exact-part page.
Where should I browse related parts? Start with the Operator Interface collection.