Cam switch 80A, three-phase starter switch (0,Y,A), in OB18 enclosure SK80-4.831\OB18

Cam switch for demanding applications

The SK80 cam switch, which also functions as an isolating switch, is a robust solution for switching three-phase circuits with a rated current of up to 80A. The design with double cams allows for flexible creation of connection programs, tailored to the specific needs of the installation. Thanks to the adjustable knob stroke angle (45° or 90°), precise control over the switching process is achieved. This model, supplied in a durable OB18 housing, is ideal for use in enclosed spaces with a high degree of contamination – typical of an industrial environment.

Functionality and application

This switch is a versatile tool for installers and end-users. It will be useful in many applications, including:

• Motor starters: as a star-delta (0-Y-∆) switch, allowing to limit the starting current and smoothly start three-phase motors.
• Load switching: connecting resistive loads, heating elements and transformers.
• Change of direction of rotation: switching the direction of rotation of three-phase motors.
• Welding machines: use in the range of switches in welding machines.
• Power switches: as power switches for switching motors with AC3 and AC23 loads.

Design and product features

The SK80 switch is distinguished by its high quality and durability. The use of silver-plated contacts and active elements made of copper minimizes transition resistance, ensuring reliable operation for a long time. Steel fastening pins running the entire length of the switch guarantee its solidity and resistance to mechanical damage. Additionally:

• Complies with the requirements of PN-EN 60947-3 and IEC 60947-3, confirming its safety and compliance with applicable standards.
• Tunnel terminals and external insulated bridges ensure IP20 protection regardless of the connection configuration.
• Drive mechanisms effectively limit the formation of electric arc during switching.
• The possibility of building a switch consisting of up to 7 segments (14 pairs of contacts) allows for the implementation of even the most complex connection programs.
• Metal drive shaft as standard ensures reliable operation.
• OB18 housing provides IP65 protection, protecting against external factors (dust, moisture).
• Complies with the requirements of RoHS Directive 2002/95/WE – does not contain substances harmful to the environment.