The Schmersal TD 422-01Y is a mechanical end and position switch of medium-duty design, intended for use in industrial applications where reliable and robust position detection is required. The switch features lever actuation and is equipped with a single NC contact (Normally Closed), which interrupts the electrical circuit when the lever is actuated. The enclosure is made of metal, ensuring high mechanical stability and resistance to external influences. The IP65 protection rating provides protection against dust and splashing water, allowing the switch to be used even in humid or dusty environments.

Applications
This switch is suitable for use in machine and plant engineering, particularly in manufacturing and packaging technology. It is used to detect end or intermediate positions of moving components, such as swing arms, doors, or slides. The medium-duty design makes it suitable for applications with moderate actuation loads, where high service life and reliability are required.

Functions and Features in Detail
The switch’s actuator head is repositionable in 4 × 90° increments, allowing flexible adaptation to different actuation directions. The lever itself is continuously adjustable over 360° and can additionally be offset by 180°, enabling it to be mounted and actuated in various positions. This increases installation flexibility and allows optimal alignment with the specific machine construction. The two cable entries with M20 x 1.5 threads facilitate secure and durable wiring, with the entries integrated into the metal enclosure.

Technology Explained Simply
The switch operates mechanically: when the lever is actuated, the integrated NC contact opens, interrupting the electrical current flow. This state is evaluated in control systems, for example, as a signal indicating that an end position has been reached. The IP65 protection rating means the device is fully protected against dust and is safe against splashing water from any direction, making it suitable for indoor use and in slightly damp outdoor environments. The metal enclosure provides additional protection against mechanical damage and corrosion.

Compatibility and Accessories
The switch is designed as a standalone unit and can be connected to standard wiring and control systems. The M20 x 1.5 cable entries allow the use of standard cable glands or conduit systems. No specific accessories are mentioned in the sources, so installation is carried out using common mounting and connection components.

Mounting and Installation
Mounting is typically done on a fixed machine surface, with the lever aligned to the actuating motion. The repositionable actuator head and the 360° adjustability of the lever allow precise adaptation to the specific actuation geometry. The two M20 cable entries simplify wiring and ensure secure mechanical fixation of the cables.

Operational Advantages
The switch offers high mechanical robustness due to its metal enclosure and medium-duty design. The IP65 protection rating ensures reliable operation in dirty or humid environments. The flexible actuator head arrangement and the 360° adjustability of the lever enable easy and adaptable installation. The use of an NC contact is common in industrial safety and control applications and ensures clear signal transmission upon actuation.