Cam switch 40A, Three-phase starter switch (0,Y,A), in OB4 enclosure with lockable front ŁK40-4.831\OB4Z

Three-Phase Starter Switch – Reliability and Versatility in One

This 40A cam switch, designed for three-phase systems (0, Y, A), is a robust solution for switching electrical circuits on and off. It finds application in both industrial installations and more demanding commercial applications. Thanks to the star-delta configuration option, it is ideal for starting three-phase motors, reducing inrush currents and ensuring a smooth start.

Construction and Application

The cam switch is a key element in control and power distribution systems. The construction based on segments with double cams allows for the creation of various connection programs, tailored to the specific needs of the installation. The angle of rotation of the drive knob, available in 30°, 45° or 90° versions, increases configuration flexibility. This model is supplied in a durable OB4 housing with a lockable front, providing protection against external factors and increasing safety. Rail mounting allows for quick and easy integration with existing electrical infrastructure.

Key Features and Benefits

• Durability and Reliability: Manufactured by the renowned SPAMEL, it guarantees long-lasting and trouble-free operation.
• Versatility: The star-delta configuration option makes it suitable for a wide range of applications, especially for motor starting.
• Safety: IP65 protection rating on the front protects against dust and moisture, ensuring safe operation even in harsh environmental conditions.
• Easy Installation: Rail mounting design simplifies installation and integration with existing systems.
• Suitable for Harsh Conditions: Ensures proper operation in temperatures from -40°C to +70°C (for LK40 and LK63).
• Compliance with Standards: Meets the requirements of PN-EN60947-3 and IEC 60947-3 standards, confirming its quality and safety.
• Designed for Professionals: Ideal for electrical installers and companies involved in industrial automation.

User Parameters

This cam switch is characterized by a continuous rated current of 40A and a rated power for AC-3 at 400V of 20kW. It has three poles and a "0" position, providing full control over the circuit. The main circuit connection type is screw connection, guaranteeing a secure and durable connection of the wires. The housing made of plastic provides electrical insulation and mechanical resistance.