Cam switch 40A, Three-phase starter switch (0,Y,A), in OB3 enclosure with yellow/red front. ŁK40-4.831\OB3C

Three-Phase Starter Switch – Reliable Motor Control

This 40A cam switch from Spamel is a robust solution for controlling motors in a star-delta configuration. Designed for use with loads up to 20 kW (at 400V), it provides safe and efficient starting and switching of three-phase motors. The OB3 enclosure construction guarantees high resistance to environmental conditions, and the yellow-red front panel facilitates identification.

Construction and Application

A cam switch is an element designed for frequent switching of electrical circuits, especially in motor starting applications. The ŁK40-4.831\OB3 model has been designed with durability and reliability in mind, making it an ideal choice for both professional installers and end-users. Made of high-quality plastic, it is resistant to mechanical damage and atmospheric factors (IP65 protection). The switch allows for 0-Y-A (off - star - delta) configuration, which is standard in starting high-power motors.

Key Features and Benefits

• High strength: The plastic housing provides protection against damage and external conditions.
• Versatility: Indirect mounting allows for flexible adaptation to different installations.
• Safety: IP65 protection guarantees protection against dust and water jets, increasing safety in harsh industrial conditions.
• Adapted for star-delta starting: Enables effective limitation of the starting current of three-phase motors.
• Mechanical durability: Designed for 3 million switching cycles, guaranteeing a long service life.
• Clear markings: The yellow-red front panel makes it easy to identify the switch functions.
• Rated continuous current 40A: Allows for handling a wide range of loads.
• Solid connections: Screw connection of the main contacts ensures a secure and reliable connection of the wires.

Technical Parameters – What You Should Know

The switch is characterized by a rated operating power of 20 kW at a voltage of 400 V and a continuous current of 40 A. The three-pole construction makes it ideal for standard three-phase installations. It is worth noting the resistance to vibrations and shocks, which confirms its suitability in demanding industrial environments. Additionally, it meets the requirements of PN-EN60947-3 and IEC 60947-3 standards, guaranteeing compliance with applicable safety standards. Designed for operation at temperatures from -40°C to +70°C (storage) and -40°C to +70°C (operation).