Cam switch 20A, direction of rotation changeover switch L-0-P, in OB11 housing. SK20-3.8368\OB11

Rotary cam switch with direction of rotation changeover – reliability and versatility

This rotary cam switch, complete with OB11 housing, is a robust solution for switching and disconnecting electrical circuits. Designed for both industrial applications and low-voltage electrical installations, it combines functionality, safety and durability. Ideal as a switch, isolator, changeover switch or control switch.

Construction and application

The SK20 rotary cam switch with direction of rotation changeover switch L-0-P is a three-pole (3 poles) device designed for panel mounting. Its construction based on double cams allows for the creation of various connection programs depending on the position of the drive knob. The ability to obtain knob stroke angles of 30°, 45° or 90° provides flexibility in adapting to specific installation needs. The OB11 housing made of plastic (PA6) provides protection against external factors and facilitates cleaning.

Key features and benefits

• Durability and safety: Rated continuous current of 20 A and high resistance to environmental conditions (ambient temperature from -40°C to +70°C) guarantee reliable operation even in harsh industrial conditions. IP65 protection on the front side increases safety by protecting against access to live parts and against moisture and dust.
• Versatility: The L-0-P direction of rotation changeover switch expands the possibilities of using the switch, allowing control of devices requiring a change in the direction of operation.
• Easy installation and connection: Screw connection of the main contacts facilitates quick and secure connection of wires with a cross-section of 1…4 mm². The OB11 housing is equipped with M20 cable glands allowing the introduction of power cables.
• Compliance with standards: Rotary cam switches meet the requirements of PN-EN60947-3 and IEC 60947-3 standards, confirming their high quality and safety.
• Durable construction: The PA6 housing material is resistant to mechanical and chemical damage and is recyclable.

Technical parameters in practice

The rated power for AC-3 at 400 V is 4 kW, which means that this switch can effectively control motors up to 4 kW. Resistance to vibrations (IEC 60068-2-6) and shocks (IEC 60068-2-27) makes the device resistant to damage during transport and operation in demanding industrial conditions. Thanks to this, the installer can be sure that the device will operate without failure for a long time.