Siemens
Siemens 3SU1100-0AB20-3CA0 Red Flat Momentary Pushbutton - 1 NC
Siemens 22mm red flat momentary pushbutton with 1 NC contact.
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12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
22 mm mounting diameter
Flat pushbutton actuator
Momentary contact function
1 NC contact
Spring-type terminals
Red actuator color
Product description
The Siemens 3SU1100-0AB20-3CA0 is a 22mm round, flat, momentary pushbutton with a red plastic actuator. It is equipped with a 1 Normally Closed (NC) contact and utilizes spring-type terminals for quick and reliable wiring.
This red momentary pushbutton is frequently used for stop functions, emergency stops, or disabling operations in control systems across industries like chemical processing, water treatment, and power generation.
Stanlo Automation, a veteran-owned distributor of industrial automation surplus, offers the Siemens 3SU1100-0AB20-3CA0. We are dedicated to providing dependable components to keep your systems running efficiently.
Technical specifications
| Actuator Type | Pushbutton |
| Shape | Round |
| Size | 22 mm |
| Material | Plastic |
| Color | Red |
| Actuation | Flat |
| Contact Type | Momentary |
| Number of Contacts | 1 NC |
| Terminal Type | Spring-type |
Common applications
Stop buttons
Emergency stops
Control panels
Industrial safety
Chemical plants
Water treatment
Compatible systems
SIRIUS ACT 3SU1 series
Safety control systems
Also known as
Siemens 3SU11
SIRIUS ACT 3SU1
Red momentary push button 22mm NC
Replaces / compatible with
This component belongs to the Siemens SIRIUS ACT 3SU1 series, designed for modern, flexible control panel solutions. Compatible with other SIRIUS ACT components.
Technical note
Expert tip
Spring-type terminals offer vibration resistance and tool-free connection, making installation faster and more secure in demanding environments.What happens next?
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Frequently asked questions
What is the function of the 1 NC contact on the Siemens 3SU1100-0AB20-3CA0?
The 1 NC (Normally Closed) contact on the Siemens 3SU1100-0AB20-3CA0 is closed in its normal state and opens when the pushbutton is pressed. This is commonly used for stop or safety functions.