Why Choose the ABB M3SSK4-101 Key Selector Switch?
The ABB M3SSK4-101 is a three-position maintained/momentary key selector switch from ABB's modular plastic 22 mm pilot-device range, designed for industrial machinery, control panels and automation systems. Its key-operated interface provides controlled access to machine functions while combining stable and spring-return selector positions in a single operator.
The M3SSK4-101 provides A-B-C selector positions, with A and B maintained and spring return from C to B. It uses key code 455, and the key can be removed in position A only, providing a defined key-retention arrangement for controlled machinery and process functions.
This non-illuminated selector features a black key-operated actuator and black plastic bezel. Holders and contact blocks are not included, allowing compatible ABB modular components to be selected according to the required electrical switching arrangement.
Key Advantages
- Three-position A-B-C operation supports versatile machine and process control functions.
- A and B maintained positions provide stable operating-state selection.
- Spring return from C to B provides a temporary command from the third position.
- Key removable in position A only provides controlled key-retention behaviour.
- Key code 455 provides a defined key configuration for the operator.
- ABB modular construction allows compatible holders and contact blocks to be selected for the required control circuit.
Key Features
- ABB M3SSK4 key selector switch.
- Three-position A-B-C operation.
- Maintained/momentary operating principle.
- Positions A and B maintained.
- Spring return from C to B.
- Key code 455.
- Key removable in position A only.
- Black key-operated actuator.
- Black plastic bezel.
- Non-illuminated construction.
- Part of ABB's modular 22 mm pilot-device range.
- Holder and contact blocks not included.
Controlled Maintained and Spring-Return Operation for Industrial Machinery
The ABB M3SSK4-101 combines maintained and momentary functions within one three-position key selector. Positions A and B remain mechanically selected, while moving the key from B to C provides a temporary command that automatically returns from C to B when released.
The 455 key code and key removal in position A only provide a defined operating arrangement for machinery requiring controlled access to its selector functions. ABB's modular architecture allows compatible holders and contact blocks to be selected separately to create the electrical contact configuration required by the application.
Typical Applications
- Industrial machinery control panels.
- Key-controlled machine mode selection.
- Operator control stations and consoles.
- Maintained mode selection with a temporary command function.
- Production and process automation equipment.
- Material handling and conveyor control systems.
- Machine setup and operating-mode controls.
- OEM machinery and electrical control assemblies.
