from 115 to 900 A in 3P and 4P configurations. They have SCCRs up to 100 kA 480 V, and their modular design speeds maintenance. The programmable overload relays have wide operating current ranges, enabling a small number of devices to satisfy the needs of many applications. Finally, bidirectional motion control can be realized by connecting two TeSys Giga contactors with a mechanical interlock system.
conditions damage the controller. Control modules can also be replaced to adapt to different coil voltages, and the switching module can be switched out to replace worn-out poles. A cable memory function can be implemented with an optional kit to facilitate rapid maintenance. Once installed, the control or switching module can be replaced quickly without removing the cables. Going in reverse Reversing contactors are used to change the direction of rotation of AC motors in applications like conveyors, elevators, and packaging lines. They work by reversing the polarity of the connections, causing the motor to rotate in the opposite direction. A reversing contactor can be made using two mechanically interlocked standard contactors. The interlock prevents the contactors from turning on simultaneously (Figure 6). For example, the following components can be used to build a reversing contactor rated for 200 HP at 460 V with a 100-250 V AC/ DC coil (Figure 6): ■ LC1G265KUEN, TeSys Giga motor controller, two required
■ LA9G3612, spreaders
■ LA9G3761, reverser bars
■ LA9G970, mechanical interlock
Summary TeSys Giga contactors and overload relays are highly versatile devices that can maximize resilience and uptime in a wide range of applications. The contactors have ratings
Figure 4: Two TeSys Giga contactors interlocked to form a reversing contactor for AC motors. (Image source: Schneider Electric)
■ DZ2FJ6, contactor lug kit
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