Why Choose the ABB M2SSK2-302 Key Selector Switch?
The ABB M2SSK2-302 is a 2-position maintained key-operated selector switch designed for controlled operator access in industrial machinery, automation systems and electrical control panels. Supplied under ABB order code 1SFA611281R3002, it forms part of ABB’s modular 22 mm pilot device range and provides secure manual selection between two fixed operating positions.
The M2SSK2-302 features a black/key operator, non-illuminated construction and a durable chrome-metal bezel. Its maintained B-C operating arrangement keeps the selected state active until deliberately changed, while the key is configured to be removable in position B only.
This version uses ABB key code 72 / Ronis 421, providing a defined key configuration for controlled-access applications. The selector operator is supplied without a contact block, allowing compatible ABB modular contact blocks and holders to be selected separately according to the required electrical switching function.
Key Advantages
- 2-position maintained key selector switch for controlled industrial operation.
- Key removable in position B only, helping control the state in which the key can be withdrawn.
- Key code 72 / Ronis 421 provides a defined key configuration.
- Robust chrome-metal bezel for industrial control-panel applications.
- Maintained B-C operation keeps the selected state active until deliberately changed.
- Modular ABB construction allows compatible contact blocks to be selected according to the required control circuit.
Key Features
- ABB M2SSK2 modular key-operated selector switch.
- 2-position maintained operation.
- B-C position arrangement.
- Key-operated actuator.
- Key removable in B position only.
- Key code 72 / Ronis 421.
- Black/key operator.
- Non-illuminated design.
- Chrome-metal bezel.
- Designed for ABB modular 22 mm pilot device applications.
- Supplied without a contact block.
- ABB order code 1SFA611281R3002.
Key-Controlled Selection for Industrial Automation
Key-operated selector switches provide a practical way to restrict changes to machine or process operating states to personnel holding the appropriate key. The ABB M2SSK2-302 provides two maintained B-C positions and permits key removal in position B only, making the withdrawal state clearly defined within the control scheme.
The key 72 / Ronis 421 configuration makes the M2SSK2-302 suitable for equipment requiring a known keyed-access arrangement. ABB’s modular pilot device architecture allows compatible contact blocks and holders to be configured according to the required electrical function, while the chrome-metal bezel provides a robust interface for industrial control panels and operator stations.
Typical Applications
- Industrial machinery control panels.
- Restricted machine operating-mode selection.
- Authorised enable and disable functions.
- Maintenance and service mode selection.
- Factory automation systems.
- Process and motor control panels.
- Key-controlled machinery and operator stations.
- OEM equipment requiring controlled access to operating functions.
