Cam switch 25A, three-phase starter switch (0,Y,A), in OB2 enclosure with yellow/red front plate ŁK25R-4.831\OB2C

Universal star-delta starter for three-phase motors

This three-phase star-delta starter, with a rated current of 25A, is a reliable solution for controlling electric motors. Designed for star-delta (0-Y-∆) connection, it enables smooth motor starting, reducing the load on the power supply network. The OB2 enclosure provides high resistance to environmental conditions and mechanical damage.

Construction and application

A star-delta starter is a switching device that allows for manual changing of electrical circuits. In this model, thanks to the "0" position, it is possible to safely disconnect the power supply. This is particularly important during servicing or maintenance of equipment. Made of durable plastic, it is resistant to corrosion and mechanical damage. The IP65 protection rating guarantees protection against water jets and dust – an ideal solution for both dry and humid environments.

• Purpose: Controlling three-phase motors in star-delta connection.
• Application: Industry, workshops, construction – anywhere that requires reliable switching of electrical circuits.
• Mounting: The starter is a complete device in an enclosure, which simplifies installation and ensures safe operation. It does not require additional covers or protection.
• Wire cross-section: Supports wires with a cross-section of 2.5 mm² to 6 mm², providing installation flexibility.

Parameters and benefits

This model stands out with its solid construction and high technical parameters: the rated operating power for AC-3 is 13 kW at 400V, and the continuous rated current is 25A. Mechanical endurance at 3 million switching cycles guarantees a long service life even with intensive use. Additionally, high resistance to vibrations and shocks (compliant with IEC standards) ensures stable operation in harsh industrial conditions. Screw connection of the main contacts facilitates wire connection and provides a secure electrical connection. It is also worth noting the wide operating temperature range (-40°C to +70°C), which allows the starter to be used in various climates.