This document stipulates the basic requirements, product classification, characteristics, product information, normal use conditions, technical requirements, test methods, inspection rules, packaging, transportation and storage, and quality commitment of AC contactors (hereinafter referred to as contactors). This document applies to contactors with frequencies of 50 Hz, 60 Hz or 50 Hz/60 Hz, rated operating voltage not exceeding AC 1 140 V, and rated operating current up to 630 A.