Why Choose the ABB M2SSK2-201 Key Selector Switch?
The ABB M2SSK2-201 is a two-position maintained key-operated selector switch designed for industrial machinery, automation systems and electrical control panels where access to a control function needs to be restricted. Part of ABB’s modular pilot-device range, it features a black key-operated actuator with a chrome plastic bezel.
The M2SSK2-201 provides maintained two-position operation without spring return, so the selected state remains engaged until deliberately changed with the key. It uses key code 455, with the key removable in position B only, providing a defined key-release position for controlled machine functions and operating modes.
ABB order code 1SFA611281R2001 identifies this exact M2SSK2-201 key selector switch. The non-illuminated operator uses a standard 22 mm mounting hole, provides IP66 front protection and is designed for ABB’s modular contact system, allowing the required contact arrangement to be selected separately.
Key Advantages
- Two-position maintained key selector for controlled industrial switching.
- Key code 455 provides a defined keyed operating interface.
- Key removable in position B only for controlled key-release procedures.
- No spring return, allowing the selected state to remain engaged.
- Chrome plastic bezel provides a clean and durable panel finish.
- 22 mm mounting and IP66 front protection suit industrial control-panel applications.
Key Features
- ABB M2SSK2 modular key selector switch.
- Two operating positions.
- Maintained switching function.
- No spring return.
- Key-operated actuator.
- Key code 455.
- Key removable in position B only.
- Black actuator.
- Non-illuminated construction.
- Chrome plastic bezel.
- 22 mm mounting-hole diameter.
- IP66 front protection.
- NEMA 4X classification.
- Approximate operator weight of 0.045 kg.
Controlled Key-Operated Selection for Industrial Machinery
Key-operated selector switches provide a practical way to restrict changes to machine functions or operating modes to personnel holding the appropriate key. The ABB M2SSK2-201 provides two maintained positions and allows the key to be removed in position B only, establishing a clearly defined key-release state within the operating procedure.
The M2SSK2-201 combines a black key-operated actuator with a chrome plastic bezel and standard 22 mm panel mounting. ABB’s modular construction enables compatible contact blocks to be selected separately according to the electrical switching requirements of the machinery or control system.
Typical Applications
- Industrial machine control panels.
- Authorised operating-mode selection.
- Factory automation equipment.
- Key-controlled machine functions.
- Production and process machinery.
- Conveyors and material handling systems.
- Industrial operator stations.
- OEM machinery and electrical control systems.
