Cam switch 100A, three-phase starter switch (0,Y,A), in OB18 enclosure. SK100-4.831\OB18

Three-phase cam switch – reliable switching in your installation

This SK100 cam switch, with a starting switch (0,Y,A), is a robust solution for controlling three-phase motors and other loads. Designed for both professional installers and end-users, it combines durability, safety and ease of installation. The OB18 housing provides protection against external factors, and the high rated continuous current value (100A) guarantees stable operation even under heavy loads.

Construction and application

The SK100 cam switch is a versatile device, finding application in many areas of industry and construction. It is used to switch electrical loads on and off, change the direction of rotation of motors, and implement starting programs (e.g., star-delta). Thanks to its segmented construction, it can be configured to different needs, creating individual connection programs. Made of plastic, it provides good electrical insulation and resistance to mechanical damage. Designed for mounting on TH35 rail or directly on the panel.

Key features and benefits

• High durability: Rated continuous current of 100A and rated short-time withstand current of 1.7kA ensure reliable operation in demanding conditions.
• Versatility: The ability to configure segments allows the switch to be adapted to specific application needs.
• Safety: IP65 protection class (front part) protects against dust and water, ensuring safe operation.
• Durability: Made of high-quality materials guarantees a long service life – withstands millions of switching cycles.
• Easy installation: Mounting on TH35 rail or directly on the panel simplifies installation and integration with existing infrastructure.
• Compliance with standards: Meets the requirements of PN-EN 60947-3 and IEC 60947-3 standards, confirming its safety and quality.
• For motors: Ideal for AC3, AC23 motor circuit breakers and three-phase motor direction switches.
• Wide range of applications: Can be used in transformers, welding machines and as switching elements in various electrical systems.

Technical parameters in practice

The rated operating power for AC-3 at 400V is 25 kW – this is sufficient power for most typical industrial applications. The housing material (plastic) provides good electrical insulation and corrosion resistance. Screw connection type guarantees a secure connection of wires with a cross-section from 16 to 35 mm². Lack of normally open and normally closed auxiliary contacts simplifies the design and reduces the cost of the device without losing functionality in typical applications. The switching angle is from 45° to 90°, which allows for precise control of the load.