Why Choose the ABB M2SSK2-104 Key Selector Switch?
The ABB M2SSK2-104 is a two-position maintained key-operated selector switch designed for industrial machinery, automation systems and electrical control panels where controlled access to switching functions is required. Part of ABB’s modular plastic pilot-device range, it features a black key-operated actuator with a black plastic bezel.
The M2SSK2-104 provides maintained two-position operation with no spring return, so the selected state remains engaged until deliberately changed with the key. The key can be removed in position B only, providing a defined key-release position for machine-control and operating-mode applications.
ABB order code 1SFA611281R1004 identifies this exact M2SSK2-104 key selector switch. This variant uses random key selection, with each selector supplied with a unique key code, and the order code covers a package of 25 key-operated selector switches.
Key Advantages
- Two-position maintained key selector for controlled industrial switching.
- Key removable in position B only for defined access-control procedures.
- Random key selection provides individual key coding across supplied switches.
- No spring return, allowing the selected state to remain engaged.
- 22 mm mounting-hole format suits standard industrial control panels.
- IP66 front protection and NEMA 4X classification support demanding environments.
Key Features
- ABB M2SSK2 modular key selector switch.
- Two operating positions.
- Maintained switching function.
- No spring return.
- Key-operated actuator.
- Random key selection.
- Key removable in position B only.
- Black control element.
- Non-illuminated construction.
- Black plastic front ring.
- 22 mm mounting-hole diameter.
- IP66 front protection.
- NEMA 4X classification.
- Supplied without contact block.
Controlled Key-Operated Selection for Industrial Machinery
Key-operated selector switches provide a practical way to restrict machine functions or operating-mode changes to personnel holding the appropriate key. The ABB M2SSK2-104 provides two maintained positions and allows key removal in position B only, helping establish a clearly defined key-release state within the operating procedure.
This random-selection variant is intended for applications requiring individually keyed selectors. Each switch within the ordered set has a unique key code, while ABB’s modular construction allows compatible contact blocks to be selected separately according to the electrical switching requirements of the application.
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.
