The SPST Contactor is a series of DC Contactor with contact arrangement of single pole single throw, including SPST-NO (one normally open), SPST-NC (one normally closed) and SPST latching relay. Single pole single throw contactor is widely used in electrical control systems, such as communication power supply equipment, frequency converters, engineering machinery, electromobiles, electric forklifts, automobiles, trains, ships, uninterruptible power supplies, etc. It is developed for both interrupted and uninterrupted loads, and suitable for switching resistive, capacitive and inductive loads. Due to the diversity of product structures, different installation requirements can be met.