Cam switch 25A, Three-phase starter switch (0,Y,A), in OB2 enclosure. SK25-4.831\OB2

Three-phase starter switch – reliable motor control

This 25A cam switch, designed for star-delta (0-Y-∆) operation, is a robust solution for starting three-phase motors. Housed in a durable OB2 enclosure, it ensures safe and efficient operation in demanding industrial environments. It is a key element of electrical installations that allows for smooth and controlled motor starting, reducing the load on the power supply network and extending the life of the equipment.

Design and application

The SPAMEL ŁK25R-4.831\OB2 cam switch is designed for mounting on a panel or in a distribution box. Its cam mechanism-based design guarantees precise switching between star and delta configurations, which is essential for the correct starting of high-power motors. This switch finds application in motor controllers, electrical switchboards and all kinds of industrial installations requiring changes in motor power supply circuits. The robust IP65 enclosure protects against external factors such as dust and moisture, ensuring reliable operation even in harsh conditions.

Key features and benefits

• Durable construction: The OB2 enclosure made of high-quality materials provides resistance to mechanical damage and weather conditions.
• For star-delta connection: Enables efficient starting of three-phase motors with high power, reducing starting currents.
• High reliability: The cam mechanism guarantees precise and stable switching between circuits.
• IP65 protection: Provides protection against dust and water jets, allowing operation in harsh industrial conditions.
• Rated current 25A: Suitable for most industrial applications requiring motor control of medium power.
• Rated switching power AC-3: 8 kW at 400 V – allows control of significant loads.
• Safety: Compliance with safety standards ensures safe operation of the device.
• Universal mounting: Possibility of mounting on a panel or in a distribution box increases installation flexibility.

Technical parameters (for professionals)

The device is characterized by a continuous rated current of 25A and a rated switching power of 8 kW at 400V (AC-3). It withstands a short-circuit current of up to 13 kA, providing additional safety for the installation. The IP65 degree of protection guarantees resistance to dust and water ingress, and the wide operating temperature range (-40°C to +70°C) allows it to be used in various industrial environments. The cross-section of the connecting wires ranges from 2.5 mm² to 6 mm², which facilitates integration with the existing electrical infrastructure. The rated insulation voltage is 690V and the impulse withstand voltage 6kV.