Surge Suppressors are used to suppress the high voltage spike that is generated when a
relay or contactor coil is de-energized. The electromagnetic field collapsing across the coil
generates a voltage spike in the wires of the control system. Without the suppressor, the
surge can reach value, which is many times greater that rated coil voltage and can
propagate through the system causing electronic controls to go to unwanted operations. In
addition using surge suppressors increases life time of the contactor and control system.

Released for: Schneider Electric India