Varistor suppression module 110...250 V AC LA4DE2U

Surge protection in electrical installations

This Schneider Electric varistor surge suppressor, with an operating voltage of 110…250 V AC, is a key element in protecting electrical circuits from harmful overvoltages. Its function is to limit the transient voltage to a maximum of 2 Uc, protecting connected devices – contactors, relays, sensors and other automation elements – from damage. This simple solution significantly extends the life of equipment and minimizes the risk of failure.

Application and compatibility

The LA4DE2U module is designed to work with TeSys Deca LC1D80-D150 (3P) and LC1D80-D115 (4P) contactors. It is ideal for use in control circuits with a voltage of 110-250 V AC. Mounting is done on top of the contactor using screws, and connection is made to the coil terminals – ensuring quick and easy installation. This module finds application in a wide range of industrial and commercial installations where power supply stability is crucial.

Design and product features

A varistor is an electronic component characterized by non-linear resistance. This means that at normal operating voltage it behaves like an insulator, but when an overvoltage occurs, its resistance drops sharply, dissipating excess energy to ground. This module is made of high-quality materials by the renowned manufacturer Schneider Electric, which guarantees reliability and durability. In addition, the product meets the Green Premium requirements – it is compliant with RoHS and REACH standards, demonstrating a commitment to environmental protection. The use of a varistor allows protection against the effects of induced overvoltages generated, for example, by electric motors.