Siemens
Siemens 3SB1203-1AC01 22mm Mushroom Pushbutton - Red
Siemens 3SB1203-1AC01 22mm maintained mushroom pushbutton unit with 1 NC.
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12-Mo Warranty
Same-Day Dispatch
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🎖 Veteran-Owned
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Response within 1 business hour
12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
40mm mushroom-shaped actuator
Maintained contact operation
1 Normally Closed (NC) contact
Yellow backing plate
Red actuator
22mm standard mounting
Product description
The Siemens 3SB1203-1AC01 is a complete 22mm pushbutton unit designed with a 40mm mushroom-shaped pushbutton. This maintained-contact type unit includes one Normally Closed (NC) contact, a yellow backing plate, and a red actuator, all housed within a molded plastic front ring.
This unit is ideal for applications such as emergency stops or safety interlocks where a maintained function and a normally closed circuit are required, commonly found in manufacturing, assembly lines, and industrial machinery.
As a veteran-owned surplus parts distributor, Stanlo Automation offers the Siemens 3SB1203-1AC01, ensuring you can source reliable industrial control components.
Technical specifications
| Actuator Type | Mushroom Pushbutton (40mm) |
| Contact Configuration | 1 NC |
| Actuator Color | Red |
| Backing Plate Color | Yellow |
| Mounting Size | 22mm |
| Contact Type | Maintained |
Common applications
Emergency Stops
Safety Interlocks
Machine Control
Industrial Safety
Control Panels
Automation Systems
Compatible systems
Siemens 22mm control system components
Also known as
Siemens 3SB1203-1AC01 Mushroom Button
Replaces / compatible with
Compatible with Siemens 3SB12 series accessories.
Technical note
Expert tip
The maintained contact functionality requires a secondary action to return the pushbutton to its unactuated state.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What is the operation and contact type of the Siemens 3SB1203-1AC01 pushbutton?
The Siemens 3SB1203-1AC01 is a maintained-contact pushbutton unit featuring one Normally Closed (NC) contact. The button stays in the pressed position until actuated again, and the NC contact breaks when pressed.