Cam switch 40A, 1-0-2 switch (3-pole), in OB4 enclosure. ŁK40-3.8380\OB4

Cam switch – reliable switching in your installation

This three-pole cam switch with a rated current of 40A is a solid solution for frequent circuit switching. The 1-0-2 disconnecting switch design allows you to choose between three positions, making it ideal for applications requiring flexibility and control. The OB4 housing provides high resistance to external conditions and mechanical damage, guaranteeing long-lasting and safe operation.

Construction and application

A cam switch is a device used to manually switch electrical circuits. This model, thanks to its design, finds application in industrial installations, workshops, and in public buildings. The switch with the "0" position allows for complete disconnection of the circuit, which increases safety during maintenance or repair. Made of durable plastic, it is resistant to corrosion and mechanical damage. Screw connection of the main contacts ensures a secure and durable connection of the wires.

Key features and benefits

• High resistance: IP65 protection class guarantees protection against dust and water jets, allowing the switch to be used in harsh environmental conditions.
• Versatility: Three-pole design (3P) and 1-0-2 disconnecting switch provide a wide range of applications in various electrical installations.
• Safety: The "0" position allows for complete disconnection of the circuit, ensuring safety during maintenance work.
• Durability: The housing material – plastic – is characterized by high resistance to mechanical damage and corrosion.
• High switching power: The rated operating power for AC-3 is 20 kW at 400V, allowing it to handle high-power loads.
• Easy installation: Designed for indirect mounting (although not required), which simplifies integration with existing electrical infrastructure.
• Mechanical endurance: Designed for a large number of switching cycles (3 million), which guarantees a long service life.

Operating parameters and compliance with standards

The switch is designed to operate in ambient temperatures from -40°C to +70°C, both during operation and storage. It meets the requirements of IEC standards regarding resistance to vibration, shock and cyclic damp heat, which confirms its reliability in various operating conditions. The rated short-time withstand current is 0.85 kA and the short-circuit making capacity Icm is 1.5 kA – these parameters demonstrate the ability to withstand momentary overloads. The tightening torque of the terminals is 2.0 Nm – this should be observed during installation to ensure a correct connection of the wires.