Cam switch disconnector 40A, 0-1 (3-pole), in OB3 enclosure with yellow/red lockable front ŁK40-2.8211\OB3ZC

Universal cam switch for demanding applications

This three-pole cam switch with a rated current of 40A is a robust solution for disconnecting and connecting electrical circuits. It is suitable for both industrial installations and workshops where reliability and safety are required. The design with a yellow-red closed front provides good visibility of the switch status and protection against accidental contact.

Construction and application

The switch is designed for indirect mounting, which simplifies its integration with various types of enclosures and control panels. Made of durable plastic, it provides resistance to mechanical damage and external factors. The IP65 protection class guarantees protection against dust and water jets, allowing operation in harsh environmental conditions. Designed for use in AC-3 circuits, it can handle a load of up to 20 kW at 400V. The cam mechanism enables quick and reliable switching between positions 0 and 1.

Key features and benefits

• Durable construction: The housing made of high-quality plastic ensures long-term operation even in demanding conditions.
• High resistance to external factors: IP65 protection class protects against dust and water, increasing safety.
• Suitable for working with various loads: Rated power for AC-3 at 20 kW (400 V) allows handling a wide range of devices.
• Safety of use: The yellow-red closed front provides good visibility of the switch status and minimizes the risk of accidental contact with energized parts.
• Easy installation: Designed for indirect mounting, which simplifies integration with existing installations.
• High mechanical durability: Provides over 3 million switching cycles, guaranteeing long-term reliability.
• Versatility: Suitable for both professional (installers) and domestic (end users) applications.

Technical parameters in practice

The rated continuous current of 40A means that the switch can safely operate with loads of this intensity for a long time. The short-circuit current withstood by the switch is 0.85 kA (1s), which provides protection against the effects of short circuits in the installation. A wide range of connection wire cross-sections (4...10 mm²) allows connection of wires of different thicknesses, adapting to the needs of a specific installation. The rated insulation voltage Ui is 690V and the impulse voltage Uimp is 6kV – these parameters ensure safe operation in various electrical networks.