Cam switch 32A, Dahlander two-speed switch, in OB2 enclosure. ŁK32R-4.8390\OB2

Two-speed Dahlander switch – reliable motor control

This cam switch, also known as a two-speed Dahlander switch, is a robust solution for controlling electric motors. Designed to operate in demanding conditions, it provides safe and efficient gear changes in industrial and commercial applications. The OB2 housing guarantees high resistance to mechanical damage and external factors.

Construction and application

The Dahlander switch allows you to change the motor speed by changing the connection of the windings. This model is particularly useful in applications requiring two operating speeds, such as fans, pumps or conveyors. The design with a knob ensures intuitive operation, and the screw connection of the main contacts guarantees secure and durable electrical connections. The housing made of plastic provides good insulation and corrosion resistance.

Key features and benefits

• High resistance to external conditions: IP65 protection class protects against dust and water jets, allowing it to be used in harsh industrial conditions.
• High rated power: The rated power for AC-3 is 17 kW at 400V, making it suitable for a wide range of applications.
• Safety of use: It has a rated insulation voltage U i at 690 V and withstands an impulse voltage of up to 6 kV.
• Durability and reliability: Designed for intensive use, with a mechanical durability of 3 million switching cycles.
• Versatility: Possibility of mounting on a panel or in an enclosure (complete device in an enclosure).
• Adapted to work in a wide temperature range: From -40°C to +70°C, both during operation and storage.
• No auxiliary contacts: Simplified design without unnecessary elements, which translates into greater reliability.
• Position 0: It has a clearly marked "0" position, which increases operating safety.

Technical parameters in practice

The rated continuous current Iu is 32 A, which means that the switch can safely operate with a load of this value for a long time. The housing material – plastic – provides good electrical insulation as well as resistance to mechanical damage and chemical factors. The lack of the possibility of indirect mounting simplifies installation in some applications, but at the same time ensures the stability of direct mounting. The cross-section of the connection cables is 4-6 mm², which allows you to connect cables of the appropriate thickness to ensure a safe electrical connection.