Disconnect switch 20A, Isolator 0-1 (3-pole), in OB12 enclosure with yellow/red lockable front SK20-2.8211\OB12ZC

Universal cam switch for reliable circuit switching

This three-pole cam switch SK20, housed in a robust OB12 enclosure with a yellow-red locking front, is a solid solution for switching electrical circuits. Designed for both professional and home use, it provides safe and convenient operation. The locking front construction enhances user safety by minimizing the risk of accidental contact.

Construction and application

This switch is designed for frequent switching of AC and DC circuits. It finds application in controlling motors, lighting, heating devices, and other applications requiring reliable disconnection or circuit change. Made of high-quality plastic, it provides good insulation and resistance to mechanical damage. The possibility of mounting on a panel or in a distribution box (although not intended for this purpose) increases its versatility. The switch has a "0" position, which allows for complete disconnection of the circuit.

Key features and benefits

• High reliability: Rated continuous current of 20A guarantees stable operation even under heavy loads.
• Safety of use: OB12 enclosure with a locking front (IP65) protects against electric shock and against external factors such as dust and moisture.
• Versatility: Can be used in various electrical installations – both in industry and in residential construction.
• Durability: Made of high-quality materials ensures a long service life (3 million switching cycles).
• Easy installation: Screw connection of wires facilitates and speeds up installation.
• Wide voltage range: Suitable for operation at an insulation voltage of 690V and an impulse voltage of 4kV.
• Optimized switching power: Rated operating power for AC-3 is 4 kW at 400V, making it suitable for many industrial and domestic applications.
• Resistance to external conditions: Withstands temperatures from -40°C to +70°C, allowing it to be used in harsh environmental conditions.

Technical parameters in practice

This cam switch stands out with its solid construction and well-thought-out technical solutions. For example, high resistance to vibration (2-13 Hz / ±1mm) and shock (15g / 11ms) makes it perfect for industrial applications exposed to vibrations and shocks. The use of plastic as the enclosure material provides good electrical insulation and corrosion resistance. Additionally, the IP65 protection rating guarantees safe use even in damp rooms or outdoors (provided adequate protection against direct atmospheric influences).