Cam switch 40A, Three-phase starter switch (0,Y,A), in OB4 enclosure. ŁK40-4.831\OB4

Motor Starter Switch – Reliable Motor Control

The 40A cam switch is a three-phase starter switch designed to control electric motors. It allows changing the connection configuration from star (Y) to delta (A) and off (0), making it an ideal solution in applications requiring flexible motor starting and operation. The OB4 enclosure provides robust protection against external conditions and mechanical damage.

Construction and Application

This cam switch is particularly useful in industrial installations, workshops, and anywhere reliable and safe control of three-phase motors is required. Thanks to the ability to switch between different configurations, it allows for optimizing the motor starting process, reducing inrush currents and extending the life of the device. Rail mounting allows for easy integration with existing electrical infrastructure.

Key Features and Benefits

• Versatility: The switch enables 0-Y-A configurations, allowing it to be adapted to various application needs.
• Durability: Made of high-quality materials, it ensures long-lasting and reliable operation even in harsh industrial conditions.
• Safety: IP65 protection rating guarantees protection against dust and water jets, increasing safety of use.
• Easy Installation: Designed for rail mounting, which simplifies installation and servicing.
• Rated continuous current 40A: Allows operation of motors up to 20 kW at 400V AC-3, providing sufficient performance for most industrial applications.
• Robust OB4 housing: Provides additional protection against mechanical damage and external factors.
• With 0 position: Allows complete disconnection of the circuit, increasing safety during maintenance or repair.

Technical Parameters in Practice

A rated continuous current of 40A means that the switch can safely operate with a load of up to 40 amps for a long time without overheating. A rated power of 20 kW at 400V AC-3 indicates its ability to effectively control motors with significant power. The IP65 protection rating provides resistance to dust and water, which is particularly important in industrial environments exposed to dirt and moisture. Lack of normally open/closed/changeover auxiliary contacts simplifies the design and reduces the cost of the device – if additional contacts are not required in a given application. The housing material – plastic – provides good electrical insulation and corrosion resistance. Screw connection type guarantees a secure connection of wires.