Cam switch 20A, Dahlander's two-speed switch with direction of rotation change, panel mounting, front gray knob black SK20-7.8538\P03

Dahlander Switch for Industrial Applications

This two-speed Dahlander switch with reversing function, designed for panel mounting, offers reliable control of electric motors. The construction with a black knob and gray housing ensures convenient operation and a clear position indicator. The switch is particularly useful in applications requiring precise speed and direction control, such as machine drives, transport systems, or lifting devices.

Construction and Functionality

The SK20-7.8538\P03 cam switch is distinguished by its solid plastic construction, ensuring durability and resistance to mechanical damage. The IP65 protection rating guarantees safe operation in harsh industrial conditions, protecting against dust and water jets. Panel mounting is done with four self-tapping screws (P03 version), which simplifies installation and ensures stable mounting. The switch allows for reversing the direction of rotation and selecting two operating speeds, allowing for optimization of efficiency and adaptation to specific application needs. The 0 position provides additional safety during maintenance or repair.

User Parameters and Applications

The switch is characterized by a rated continuous current of 20A and a rated power of 4kW for AC-3 at 400V. This makes it suitable for controlling medium-power motors in various industries. The lack of auxiliary contacts makes the switch ideal for simple control applications where additional signaling of switching states is not required. The possibility of indirect mounting increases installation flexibility, allowing adaptation to different machine and device configurations. The cross-section of the connection wires is 1...4 mm², which ensures compatibility with a wide range of installation cables. The rated conditional short-circuit current is 10kA, which provides a high level of safety in the event of a short circuit in the installation.