Sigma Elektrik Low Voltage Contactors are designed in accordance with IEC/EN 60947-4-1. They are used remotely to control and protect (only in combination with thermal Overload Relays) electrical motors and other electrical loads such as lamps, capacitors, transformers, pumps etc. The contactors are used together with thermal Overload relays so as to protect the circuits likely to be overloaded in operation.
7.1) 3 and 4 Phase Contactors up to 800A, are suitable for AC-1 and AC-3 application
7.2) Capacitor Switching Contactors
Sigma Elektrik Capacitor Switching Contactors are specially produced for compensation systems and equipped with damping resistors to suppress the high switching currents.
In addition, thanks to the special V0 non-flammable tubing used on the outer surface of the current limiting resistors, it does not allow any fire risk during the flow of high currents.
7.3) Reversing Contactors
Reversing contactor is the product built by combining two standard magnetic contactors by use of a highly reliable mechanical interlock unit. Reversing contactors are used in applications such as changing the polarity of the motor and transferring the energy between two energy sources. Change of polarity reverses the rotation direction of the motor.
7.4) Mini Type Contactors
Mini Type contactors have smaller in size than power contactors therefore it provides suitable usage when the space is limited