目录简介 | Contents Foreword 1 Scope 2 Definitions 3 Classification 4 Characteristics 5 Product information 6 Normal service, mounting and transport conditions 7 Constructional and performance requirements 8 Tests Annex A (Normative) Equipment for direct switching of a single motor Annex B (Informative) Items subject to agreement between manufacturer and user Annex C (Normative) Single pole operated three pole switches |