Disconnect switch 40A, Isolator 0-1 (3-pole), in OB4 enclosure with yellow/red front ŁK40-2.8211\OB4C

Universal cam switch for demanding applications

This three-pole cam switch with a rated current of 40A is a reliable solution for manual switching of electrical circuits. It is suitable for both industrial installations and workshops, allowing safe control of higher-power devices. The design with a 0 position provides additional safety during maintenance and repairs.

Solid construction and high resistance

The switch is housed in a durable housing made of plastic, which guarantees its durability and resistance to mechanical damage. The IP65 protection class protects against dust and water ingress, enabling operation in harsh environmental conditions. The yellow-red front panel ensures good visibility and easy identification. Screw terminals provide a secure and stable connection of wires with a cross-section of 4-10 mm².

Key features for professionals and users

• Suitable for motor operation: C characteristic allows smooth starting of devices with motors, without the risk of unnecessary tripping.
• Safety first: The 0 position allows complete disconnection of the circuit during maintenance or repair work.
• Durability confirmed by tests: Mechanical endurance of 3 million switching cycles guarantees long-term trouble-free operation.
• Wide range of applications: Ideal for controlling motors, transformers, heaters and other electrical devices requiring manual switching on/off.
• Resistance to external conditions: IP65 protection class ensures safe operation even in wet or dusty environments.
• Easy installation: Designed for indirect mounting, which facilitates integration with existing electrical infrastructure.

Technical parameters in practice

The switch is characterized by high electrical parameters, which translate into its reliability and safety of use: the rated power for AC-3 at 400V is 20 kW, and the continuous rated current is 40A. The short-circuit withstand current (1s) is 0.85 kA, which provides protection against the effects of sudden overvoltages. The rated insulation voltage Ui is 690V, and the impulse withstand voltage Uimp is 6kV – parameters guaranteeing safe operation in various electrical installations.