UKC1 Capacitor Contactor 3-Pole 9A~85A 24V 110V 220V 400V ac Coil

UKC1-9C~85C Capacitor Contactor is an electrical switching device specifically designed for controlling the switching of power capacitors. Primarily used in low-voltage reactive power compensation systems, it precisely manages the connection and disconnection of capacitors to regulate grid power factor, reduce line losses, and improve overall power system efficiency.

Comprising an electromagnetic coil, main contacts, an arc suppression device, and auxiliary contacts, its core design focuses on suppressing inrush current during capacitor switching. When the grid power factor drops below a set value, the control system sends a signal to energize the contactor coil. The armature pulls in, closing the main contacts and connecting the capacitor to the circuit for reactive power compensation.

When the power factor meets requirements or the capacitor needs to be disconnected, the coil de-energizes, and the main contacts open via spring action, disconnecting the capacitor from the grid. The pre-charging design ensures smooth current flow at the moment of contact closure, extending equipment service life.