40A reversing starter, direction of rotation changeover switch L-0-P, in OB3 enclosure. SK40-3.8368\OB3

Cam switch for demanding applications

This 40A cam switch, designed for reversing the direction of rotation (L-0-P), is a robust solution for both professional installers and end users. The device, housed in a durable OB3 enclosure, ensures reliable operation in harsh industrial conditions. It is ideal for applications where frequent changes in the direction of rotation of electric motors are required.

Characteristics and application

The SK40-3.8368\OB3 switch is an element used for safe and efficient control of motors. Designed to operate with a rated current of 40A, it enables effective change of the direction of rotation, which is crucial in many industrial applications – from controlling drives to production machines. The solid construction and high resistance to external conditions guarantee long-lasting and trouble-free operation. The OB3 enclosure provides protection against moisture and dust (IP41/IP65), increasing safety in demanding environments.

Key features and benefits

• Durable construction: The switch is made of high-quality materials, resistant to mechanical damage and weather conditions.
• Wide range of applications: Ideal for controlling electric motors in industry, workshops and other applications requiring frequent changes in the direction of rotation.
• Safety of use: The OB3 enclosure provides protection against electric shock and damage caused by external factors (IP41/IP65 protection class).
• High reliability: The switch is designed for intensive use, with a mechanical durability of 3 million switching cycles.
• Resistance to extreme conditions: Operation in a wide range of ambient temperatures (-40°C to +70°C) guarantees reliable operation even in difficult conditions.
• High switching power: The rated switching power in category AC-3 is up to 20 kW (at 400V), allowing operation of devices with significant power.
• Adapted to wires of different thicknesses: Possibility to connect wires with a cross-section from 4 mm² to 10 mm².
• Compliance with standards: The device meets the requirements of IEC and PN-EN standards, guaranteeing safety and quality.

Technical parameters in practice

The rated insulation voltage Ui at 690V and the rated impulse withstand voltage Uimp equal to 6kV ensure a high level of installation safety. The short-time withstand current Icw (1s) of 0.85 kA and the rated conditional short-circuit current Icm of 1.5 kA demonstrate the switch's ability to withstand overloads and short circuits. The tightening torque of the terminals of 2.0 Nm ensures a secure connection of the wires. Resistance to vibrations and shocks confirms its suitability in industrial environments exposed to such influences.