Descriptors | Controllers, Control systems, Automatic control systems, Process control, Control equipment, Electric control equipment, Test equipment, Interfaces (data processing), Programming, Computer peripheral equipment, Industrial, Low-voltage equipment, Rated voltage, Classification systems, Environment (working), Safety measures, Electric wiring systems, Marking, Alternating current, Direct current, Instructions for use, Electrical testing, Environmental testing, Mechanical testing, Thermal testing, Withstand voltage, Dielectric strength, Electromagnetic fields, Conformity, Protected electrical equipment, Electric enclosures, Earthing, Portable, Electromagnetic compatibility |