40A rotary switch, direction of rotation changeover switch L-0-P, base rail mounting front yellow-grey knob red SK40-3.8368\BS04

Cam switch for busbars – reliable load switching

This cam switch, with a rated current of 40A, is a robust solution for frequent load switching in electrical installations. Designed for mounting on busbars, it provides convenience and safety of use. Model SK40-3.8368\BS04 is distinguished by its versatility – it is ideal for use in industry, commercial construction or workshops. Characteristic C allows it to react more slowly to short current surges, making it well suited for starting devices with a motor.

Design and application

The cam switch with a red knob and a yellow-gray housing is an element used to change the direction of rotation of three-phase motors or switch between different circuits. Made of durable plastic, it is resistant to mechanical damage and external factors. The IP65 protection class guarantees safety in dusty and humid conditions. The switch has three poles and a "0" position, which allows for complete disconnection of the circuit. Mounting on a busbar (front) is quick and intuitive, which translates into time savings during installation.

Parameters and benefits for professionals and end users

This switch not only meets safety standards (IP65), but also offers high reliability thanks to its solid construction and precise workmanship. The rated operating power for AC-3 is 12 kW at 400V, making it suitable for servicing various devices. The lack of auxiliary contacts (both normally open and normally closed) simplifies the installation diagram, and the inability to return to the "0" position ensures setting stability. Indirect mounting provides flexibility in choosing the installation location. The continuous rated current at 40A guarantees safe operation even under heavy loads. In addition, high mechanical durability (3 million switching cycles) ensures a long service life of the device – it is an investment for years!