Why Choose the ABB M3SS3-21R Selector Switch?
The ABB M3SS3-21R is a three-position maintained/momentary illuminated selector switch designed for industrial control panels, machinery and automation systems. Part of ABB's modular 22 mm pilot device range, it features a red short-handle rotary actuator with a chrome-plastic bezel for clear manual control and visual indication.
The M3SS3-21R combines maintained and momentary functions across its three positions: A and B are fixed, while position C provides spring return to B. This arrangement allows a maintained selection to be combined with a temporary command that automatically returns to the centre B position when the operator releases the handle.
Designed for standard 22 mm panel mounting, the M3SS3-21R is an illuminated modular selector switch operator supplied without a contact block. Its combination of fixed and spring-return positions makes it particularly useful for industrial machinery functions requiring both persistent mode selection and temporary operator commands.
Key Advantages
- Combined maintained/momentary operation provides two control behaviours from one selector.
- A and B positions are fixed for maintained selection.
- Spring return from C to B provides a temporary command from the third position.
- Red illuminated short-handle actuator combines operator control with visual indication.
- Chrome-plastic bezel provides a clean industrial operator interface.
- Standard 22 mm panel mounting supports straightforward control-panel integration.
- Modular ABB construction allows compatible contact and illumination components to be selected for the required circuit.
Key Features
- ABB M3SS3 modular selector switch series.
- Three-position maintained/momentary operation.
- A and B fixed positions.
- Spring return from C to B.
- Short-handle rotary actuator.
- Red actuator colour.
- Illuminated selector switch design.
- Chrome-plastic bezel.
- Supplied with no contact block.
- 22 mm modular pilot-device format.
- Product weight of approximately 0.015 kg.
Flexible Maintained and Momentary Control for Industrial Machinery
Selector switches combining maintained and momentary positions allow different operator commands to be handled through a single control device. On the ABB M3SS3-21R, positions A and B remain fixed after selection, while position C automatically returns to B when released, providing a practical interface where both persistent and temporary commands are required.
The M3SS3-21R forms part of ABB's modular pilot-device system, allowing machine builders and panel designers to configure the illuminated operator with compatible contact and illumination components. Its red short-handle actuator, chrome-plastic bezel and standard 22 mm format provide a compact operator interface for industrial machinery and automation equipment.
Typical Applications
- Industrial machinery control panels.
- Maintained mode selection with a temporary command function.
- Machine setup and operating controls.
- Jogging and temporary machine commands.
- Manufacturing and production equipment.
- Material handling and conveyor systems.
- OEM machinery and industrial automation systems.
