Main contactors are mechanical contactors with a high switching capacity that are used for controlling motors. Solid state contactors, however, work with faster switching times and avoid possible wear because they operate electronically and not mechanically. Solid-state reversing contactors are suited to reverse the direction of three-phase current motors. All types of main contactors are available with AC and DC control voltage. The three-phase contactors are equipped with auxiliary contacts to return the signals to the controller.
Applications of main contactors in industry
Main contactors are typically used in automation and control technology. Examples are:
Main contactors, solid-state contactors and solid-state reversing contactors from Siemens are in the product range of Automation24 with an operating power of up to 18.5 kW. All contactors are available in the two sizes S0 and S00 for different control voltages and current intensities. No matter whether they are main contactors, solid-state relays, contactor relays or auxiliary switch blocks.
Alongside solutions from Siemens, at Automation24 you will also find main contactors from Schneider Electric's TeSys Deca series within the product range. While you can of course purchase models in the standard TeSys D size, with an operating performance ranging from 4 to 18.5 kW, main contactors in the smaller TeSys K size, with an operating performance ranging from 2.2 to 5.5 kW, are also available.
If you require switches and contactors for three-phase motors, then Automation24 again has you covered – with the Schneider Electric motor protection circuit breakers from the TeSys Deca series and the SIRIUS circuit breakers for motors and starters from Siemens.
Discover the other SIRIUS series modules available in the range: easy, easier – SIRIUS modular system.
At Automation24, you will find a large selection of main contractors from Siemens and Schneider Electric, for reliable motor control at very affordable prices. Select the appropriate main contactor for your application now!