Descriptors | All-or-nothing relays, Relays, Switches, Switchgear, Electronic equipment and components, Electrical equipment, Quality control, Quality assurance systems, Assessed quality, Dimensions, Medium-duty, Light-duty, Working range, Ratings, Environment (working), Rated voltage, Rated frequencies, Electrical insulation, Electrical resistance, Electrical properties and phenomena, Electrical impedance, Performance, Marking, Inspection, Electric contacts, Numerical designations, Statistical quality control, Qualification approval, Approval testing |