Cam switch 25A, Circuit switch 0-1-2-3, in OB2 enclosure. ŁK25R-2.8445\OB2

Rotary cam switch – reliable circuit switching

This 25A rotary cam switch, in a robust OB2 housing, is designed for safe and convenient switching of electrical circuits. Model ŁK25R-2.8445\OB2 offers a 0-1-2-3 configuration, making it a versatile solution for both domestic and industrial installations. It is a complete device, ready for mounting, which significantly simplifies and speeds up installation work.

Construction and application

A rotary cam switch is a mechanical switch that allows for manual switching of circuits on and off. The design with double cams enables the creation of various connection programs depending on the knob position. In this model, the knob allows you to choose between three positions (0-1-2-3), which is particularly useful in applications requiring precise load control. The OB2 housing made of plastic provides protection against mechanical damage and external factors. The IP65 protection rating guarantees resistance to dust and moisture, allowing the switch to be used in harsh environmental conditions.

Key features and benefits

• Versatility: The 0-1-2-3 configuration makes the switch applicable in many different electrical circuits.
• Durability: Made of high-quality materials, it ensures long-lasting and reliable operation.
• Safety: Rated continuous current of 25A and high resistance to environmental conditions (IP65) guarantee safe operation.
• Easy installation: The complete device in the OB2 housing is ready for immediate installation, saving time and installation costs.
• Wide range of applications: Ideal for installation in enclosed (industrial) premises and in places exposed to moisture and dust.
• Compliance with standards: Meets the requirements of PN-EN60947-3 and IEC 60947-3, confirming its quality and safety.
• Adapted to work in difficult conditions: Withstands temperatures from -40°C to +70°C and meets standards for vibration, shock, damp heat and salt mist.
• Solid connections: The type of connection of the main contacts – screw connection – ensures secure and durable electrical connections.

Technical parameters for professionals

The switch is characterized by a rated operating power for AC-3 of 13 kW at 400 V and a rated continuous current Iu of 25 A. It withstands a short-circuit current of 1 kA for 1 second and has a short-circuit making capacity Icm of 1.4 kA. The rated insulation voltage Ui is 690 V and the impulse withstand voltage Uimp is 6 kV. The cross-section of the connection cables should be from 2.5 mm² to 6 mm². The lack of auxiliary contacts (both normally open and normally closed) simplifies the device's design and reduces the risk of failure. The tightening torque of the terminals is 1.2 Nm and the mechanical durability is as much as 3 million switching cycles.