Cam switch 40A, Dahlander two-speed switch, in OB2 enclosure. SK40-4.8390\OB2

Cam switch – reliable motor control

This cam switch, with a rated current of 40A, is designed to control electrical circuits, particularly motors. The cam mechanism provides precise and reliable switching of the load. This model is particularly popular in applications requiring changes in motor rotation direction or selection of different operating speeds. Made in a durable OB2 housing, it guarantees safety and durability even in harsh industrial conditions.

Construction and application

The cam switch SK40-4.8390\OB2 is a component mainly used in electric motor control systems. Specifically, it is a Dahlander two-speed switch, which means it allows changing the motor's rotational speed by changing the connection of the windings. This solution allows adapting the machine's operation to specific needs, increasing efficiency and saving energy. It finds wide application in agricultural machinery, industrial equipment, and building automation systems.

Advantages and characteristic features

• Durable construction: The OB2 housing provides high resistance to mechanical damage and external factors, which translates into a long service life of the device.
• Designed for motors: Specifically designed for controlling electric motors, it offers optimal performance and reliability.
• Two-speed Dahlander switch: Allows changing the motor speed without the need for additional control elements. This solution is particularly useful in applications requiring flexible adjustment of machine parameters.
• Wide voltage range: Adapted to work with a rated insulation voltage of 690V and an impulse voltage of 4kV, making it a universal solution for various electrical installations.
• High resistance to environmental conditions: IP65 protection degree guarantees protection against dust and water jets, enabling operation in harsh industrial conditions.
• Mounting: Various mounting methods are available – with two or four self-tapping screws (P03, P04, P23, P24).

Technical parameters (for the user)

The switch is characterized by a continuous rated current of up to 16A and a rated switching current of up to 10A (depending on the AC-21A/AC-22A category). It can be used with wires with a cross-section adapted to the load current. The rated switching power is 2kW at 230V and 4kW at 400V (for category AC-23A). The device is vibration resistant according to IEC 60068-2-6. The short-circuit withstand current is 0.25kA (for 1 second), and the short-circuit making current is 0.34kA.