Cam switch 40A, Dahlander two-speed switch, in OB4 enclosure. ŁK40-4.8390\OB4

Rotary cam switch for demanding applications

This 40A rotary cam switch, also known as a Dahlander two-speed switch, is a reliable solution for switching electrical circuits on and off. It is used in industrial and construction installations where frequent changes in motor rotation direction or switching between different circuits are required. The OB4 housing design provides additional protection against external factors and facilitates installation.

Construction and application

Rotary cam switches, such as this model, are used as isolators, disconnectors, switches and control switches in low-voltage circuits. The segmented design with double cams allows for flexible configuration of the switching program according to needs. The ability to obtain different knob stroke angles (30°, 45° or 90°) increases the functionality of the device. Designed for use in enclosed spaces, it is perfect for industrial plants and workshops.

Parameters and resistance to external conditions

The switch is characterized by high resistance to harsh working conditions. It is adapted to temperatures from -40°C to +70°C and meets the requirements of PN-EN60947-3 and IEC 60947-3 standards. Additionally, it has passed tests confirming resistance to vibrations, shocks, damp heat and salt mist in accordance with IEC 60068-2-6, IEC 60068-2-27, IEC 60068-2-30 and IEC 60068-2-52 standards. The rated continuous current is 40A, and the rated operating power for AC-3 at 400V is 20kW. The IP65 degree of protection guarantees safe use even in dusty and humid environments. Connection cables should have a cross-section of 4 to 10 mm².

This switch is a solid and durable solution for professionals and users looking for reliable electrical equipment. Thanks to its wide range of technical parameters and resistance to external factors, it will find application in many different industrial and construction applications.