Cam switch disconnector 20A, 0-1 switch (3-pole), in OB2 enclosure. SK20-2.8211\OB2

Rotary switch – reliable switching in your installation

This three-pole rotary switch from Spamel, in OB2 housing, is a solid and functional solution for switching electrical circuits. Designed to operate at voltages up to 690V and currents of 20A, it is perfect for both industrial installations and public buildings. The housing construction provides high resistance to mechanical damage and external factors, and the high IP65 protection rating guarantees safe use even in harsh conditions.

Construction and application

The rotary switch SK20-2.8211\OB2 is a device used for manual switching of electrical circuits. Its construction based on a cam mechanism ensures reliable and dependable operation. The 0-1 switch allows easy switching on and off of the power supply, which is particularly useful in applications requiring frequent load control. The possibility of mounting on a panel or in distribution boards increases its versatility. The cross-section of the connection cables 1…4 mm² allows connection of various cables.

Key features and benefits

• Durability and reliability: Made of high-quality materials, resistant to mechanical damage and atmospheric factors.
• Safety: IP65 protection rating protects against access to live parts and the effects of dust and water.
• Versatility: Possibility of indirect and flat mounting expands the range of applications.
• High short-circuit resistance: The conventional rated short-circuit current is 10 kA, which ensures protection of the installation in the event of a short circuit.
• Wide operating temperature range: The ability to operate at temperatures from -40°C to +70°C makes it suitable for use in various environments.
• Long service life: Mechanical durability of 3 million switching cycles guarantees long-term use without the need to replace the device.
• Compliance with standards: Meets safety requirements, confirmed by the certificates held (CE, RU, UA).
• Adapted to various applications: thanks to the possibility of choosing the number of poles (from 1 to 6) it can be adapted to specific installation needs.

Technical parameters – what you should know

The switch is characterized by high electrical parameters: the rated continuous current Iu is 20A, and the rated switching power P e in AC-3 category is 4 kW at 400V. It withstands a short-time current I cw(1s) at 0.25 kA and a peak withstand current I cm of 0.34 kA. The rated insulation voltage Ue is 690V and the impulse withstand voltage Uimp is 4kV. These parameters ensure safe and efficient operation of the device in various operating conditions. The tightening torque of the terminals is 0.5 Nm, which facilitates the mounting of cables with a cross-section from 1mm² to 4mm².