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Siemens 3SB3201-0AA21 Flat Pushbutton - 22mm Red, 1NO+1NC

Siemens 3SB3201-0AA21 22mm round flat red pushbutton, 1NO+1NC, with holder.

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ManufacturerSiemens

Part number3SB3201-0AA21

Mounting Diameter 22mm

Shape Round

Actuator Type Flat Pushbutton

Actuator Color Red

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22mm standard mounting Flat red actuator 1 NO + 1 NC contact block Screw terminal connections Includes holder Phased-out Siemens product

Product description

The Siemens 3SB3201-0AA21 is a 22mm round pushbutton with a flat red actuator. It is equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) contact block and features screw terminals for wiring. The unit includes a holder.

This red pushbutton is commonly used for emergency stop functions, critical start/stop operations, or other signaling requirements on machinery and control panels. Its flat design and 22mm mounting size are standard in industrial automation.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, ensures you can find critical components like the Siemens 3SB3201-0AA21. We help keep your operations running smoothly with reliable parts sourcing.

Technical specifications

Mounting Diameter	22mm
Shape	Round
Actuator Type	Flat Pushbutton
Actuator Color	Red
Contacts	1 NO + 1 NC
Terminal Type	Screw Terminal
Included	Holder
Series	SIRIUS 3SB3

Common applications

Emergency Stops

Control Panels

Machine Operation

Industrial Signaling

HMI Stations

Compatible systems

Designed for Siemens 3SB3 series mounting; fits standard 22mm panel cutouts.

Also known as

Siemens 3SB3 Red Button 3SB3 Flat Red Pushbutton Siemens 22mm Red Button

Replaces / compatible with

This is a phased-out product. The preferred successor is the SIRIUS ACT 3SU1 series, specifically the 3SU1100-0AB20-1FA0 pushbutton unit.

Technical note

Expert tip

The 1 NO + 1 NC contact configuration provides both normally open and normally closed circuits, offering flexibility for various control logic requirements.

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Frequently asked questions

What is the successor to the Siemens 3SB3201-0AA21 red pushbutton?

The Siemens 3SB3201-0AA21 is a discontinued part. The SIRIUS ACT 3SU1 series is its successor. The recommended replacement is the 3SU1100-0AB20-1FA0 pushbutton unit, which offers similar functionality and fits the 22mm standard.