Cam switch 40A, Dahlander two-speed switch, in OB3 enclosure. ŁK40-4.8390\OB3

Universal cam switch for demanding applications

This two-speed Dahlander switch in an OB3 housing is a robust solution for controlling motors and other AC loads. Designed for both professional and end-user applications, it provides reliable operation and safety. The housing construction increases resistance to external conditions, and the possibility of mounting on a panel simplifies integration with existing installations.

Construction features and operating parameters

The switch is characterized by high mechanical strength – it withstands up to 3 million switching cycles. Made of plastic, it is resistant to corrosion and mechanical damage. The IP65 protection class guarantees protection against dust and water jets, allowing it to be used in harsh industrial conditions. Adapted to work in a wide temperature range – from -40°C to +70°C – it will perform well in various environments. The continuous rated current is 40A, and the rated operating power for AC-3 at 400V is 20kW, making it suitable for controlling most standard motors. The use of screw connection ensures a secure and durable connection of wires with a cross-section from 4 to 10 mm².

Application and benefits

The Dahlander switch finds wide application in low-voltage electrical circuits, especially as a control element for electric motors. It allows changing the direction of rotation or the rotational speed of the motor, which is crucial in many industrial and automation applications. Thanks to its construction and technical parameters, this switch is ideal for:

• Controlling motors in HVAC systems (heating, ventilation, and air conditioning).
• Applications in machines and industrial equipment.
• Electrical installations in public and industrial buildings.
• Solutions requiring reliable switching of loads.

It is worth emphasizing compliance with PN-EN 60947-3 and IEC 60947-3 standards, which confirms its safety and quality of workmanship. Additionally, the presence of the "0" position increases safety by allowing complete disconnection of the circuit. The availability of technical documentation (data sheets, instructions) facilitates the installation and servicing of the device.