Cam switch 80A, Direction of rotation changeover switch L-O-P, in OB18 housing SK80-3.8368\OB18

Cam switches SK – a versatile solution for professionals

SK80 cam switches are advanced devices combining the functions of an isolator and a switch. Their wide range of applications, from motor disconnectors to direction-of-rotation switches, makes them indispensable in industrial and electrical installations. The SK80-3.8368\OB18 model is a cam switch with a rated current of 80A, equipped with an L-O-P direction-of-rotation switch, housed in a robust OB18 enclosure.

Construction and application

The construction of SK80 switches is based on a segmented design with double cams, allowing for the creation of individual connection programs tailored to specific needs. The ability to set the knob stroke angle to 30°, 45° or 90° (in the SK63 model) ensures precise control over the circuits. The wide range of applications includes:

• Motor disconnection under load (AC3, AC23).
• Connection of resistive loads and heating elements.
• Switching in transformers and welding machines.
• Changing the direction of rotation of three-phase motors.
• Construction of starting switches (star-delta).
• Switching elements in various electrical installations.

Features and benefits

SK80 cam switches are distinguished by a number of features that translate into reliability and safety of use:

• Compliance with standards: They meet the requirements of PN-EN 60947-3 and IEC 60947-3 standards, guaranteeing safety and compliance with applicable regulations.
• High protection: Tunnel terminals and insulated external bridges provide an IP20 degree of protection regardless of the connection configuration. The OB18 enclosure increases protection to IP65.
• Durability and reliability: Silver-plated contacts and copper components minimize transition resistance, and steel pins ensure a solid connection of the segments. Drive mechanisms effectively reduce the formation of electric arc.
• Flexibility: The ability to build a switch consisting of up to 7 segments (14 pairs of contacts) allows for the implementation of even the most complex connection programs.
• Resistance to external conditions: Metal elements protected by electrolytic protective coating eliminate oxidation, and a wide range of operating temperatures (-40°C to +70°C) enables use in harsh industrial conditions.
• Safety: They meet the requirements of RoHS Directive 2002/95/EC, which means no harmful substances in the composition of materials.

The rated insulation voltage is 690 V, the continuous rated current is 80 A, the rated switching current is also 80 A, and the conventional thermal current in air is also 80 A. The rated short-time withstand current is 1.5 kA. These parameters guarantee stable and safe operation of the device in demanding industrial applications.

Thanks to these features, SK80 cam switches are an optimal solution for both installers looking for reliable components and end-users expecting safe and efficient operation of electrical installations.