The Siemens 3SU10004CF110AA0 is a RONIS key-operated switch from the Siemens SIRIUS ACT 3SU1 series, designed for industrial control panels, machine operator stations and automation equipment where controlled operation through a key is required. It features a 22 mm round plastic design, lock number 455, 2 keys, and 2 switch positions O-I with a latching operating principle.
The switch has a 90° actuating angle, with the two positions located at 10:30h and 13:30h. The key can be removed in both O and I positions, providing flexibility for applications where the machine's operating mode needs to be selected and then secured against unintended operation.
The Siemens 3SU10004CF110AA0 RONIS key-operated switch is used to provide controlled operator access to a machine or electrical control function.
Unlike a standard pushbutton that can generally be operated without a key, a key-operated switch requires the appropriate key to change the switch position. This makes it useful for applications where a machine function should only be changed by an authorized operator or where an operating mode needs to be intentionally selected.
The two positions are designated O-I, commonly representing an OFF/ON or inactive/active function depending on the machine's control philosophy.
The latching mechanism keeps the selected position mechanically maintained until the key is turned again.
The Siemens 3SU10004CF110AA0 key-operated switch provides a compact method of controlling machine functions through a key-operated interface.
Its 22 mm round design allows it to be integrated into standard industrial control-panel layouts alongside compatible Siemens SIRIUS ACT pushbuttons, selector switches, indicator lights and emergency-stop devices.
The use of a key provides an additional level of operator control. For example, a machine builder may use a key-operated selector to control access to a particular operating mode or enable a function that should not be changed accidentally.
The actual safety or access-control function must be determined by the complete machine design.
This model has two switch positions, O and I.
The 90° actuating angle provides a defined movement between the two positions. The positions are arranged at 10:30h and 13:30h, as specified for the product.
Because the switch uses a latching operating principle, the selected position remains mechanically maintained after the key is turned.
This makes it suitable for applications where the operator needs to select and maintain a particular operating state.
A notable feature of the 3SU10004CF110AA0 is that the key can be removed in both O and I positions.
This can be useful where the machine designer wants the selected operating condition to remain physically maintained while preventing unauthorized or unintended changes.
For example, after selecting the required position, an authorized operator can remove the key. The switch remains in the selected position until the appropriate key is inserted again.
The exact purpose of key removal should be established according to the machine's operating and access-control requirements.
The product uses RONIS lock number 455 and is supplied with 2 keys.
The lock configuration is important when replacing an existing key-operated switch because the key and lock arrangement must match the intended application.
For replacement projects, verify the complete Siemens ordering number and lock number before purchasing.
The latching operating principle means that the switch does not automatically return to another position after the key is released.
Instead, the selected O or I position remains mechanically maintained.
This is useful for machine-control functions where a persistent operating-mode selection is required rather than a temporary command.
Possible applications include:
The actual electrical function depends on the compatible contact modules and the machine's control circuit.
The Siemens 3SU10004CF110AA0 RONIS key switch can be considered for:
OEM machine manufacturers and panel builders can use the 3SU10004CF110AA0 to create controlled operator interfaces.
The SIRIUS ACT platform provides a modular family of operator controls, including key-operated switches, pushbuttons, selector switches, indicator lights and emergency-stop devices.
The 22 mm format allows the key switch to be incorporated into compact operator panels while maintaining a consistent Siemens SIRIUS ACT appearance.
For a new installation, verify the required contact modules, holder and electrical configuration separately because the front actuator/key-operated element may need additional components to create the complete switching device.
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The Siemens 3SU10004CF110AA0 is a RONIS key-operated switch from the SIRIUS ACT 3SU1 series with two switch positions, O-I, and a latching operating mechanism.
The product is specified with 2 keys.
The specified RONIS lock number is 455.
It has 2 switch positions: O and I.
Yes. It has a latching operating principle, so the selected position remains mechanically maintained.
The specified actuating angle is 90°, with the positions located at 10:30h and 13:30h.
Yes. The product specification indicates key removal in both O and I positions.
The switch is designed for a 22 mm round panel mounting format.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS ACT 3SU1 |
| Model Number | 3SU10004CF110AA0 |
| Product Type | LED Module |
| Mounting Size | 22 mm modular system |
| Function | Visual status indication / illumination |
| Technology | LED |
| Voltage Range | System dependent (AC/DC variants available) |
| Material | Industrial-grade plastic housing |
| Protection Class | IP66 / IP67 / IP69 / IP69K |
| Operating Temperature | -25°C to +70°C |
| Mounting Type | Snap-on modular system |
| Application | Control panels, automation systems |
| Brand | Siemens |
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