Description

The ABB M2SSK3-301 is a 2-position momentary-return key selector switch with a chrome metal bezel and non-illuminated actuator, forming part of ABB’s M2 22 mm modular operator component system. The key-actuated momentary-return mechanism requires both the correct key and deliberate operator action to produce a momentary output pulse, providing a high level of security for controlled or safety-critical switching operations. The chrome metal bezel delivers superior mechanical durability and a premium appearance compared to plastic variants, making this device suitable for high-specification panel front installations in industrial and process environments.

Designed to comply with IEC 60947-5-1, the M2SSK3-301 is constructed for 22 mm panel mounting and is supplied without a contact block, enabling the user to configure the required contact arrangement using compatible ABB MCB or MCBH contact block modules. The momentary-return action means the switch springs back to its home position when released, generating a pulse output signal rather than a maintained state, which is important for functions such as jog enable, machine cycle initiation, safety acknowledge, or access-controlled panel unlock commands.

The M2SSK3-301 is widely applied in machine tool control panels, industrial automation systems, process plant control consoles, and security access point controls where key-operated momentary command switching is required. Its membership in ABB’s M2 modular family ensures dimensional compatibility with other M2 operator components and full compatibility with ABB’s contact block accessories. This product provides machine builders and panel builders with a reliable, secure, and professionally finished key selector switch suitable for demanding industrial operator interface applications.