BS 5424-2:1987

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Low-voltage controlgear. Specification for semiconductor contactors (solid state contactors)|Electrical testing, Circuits, Graphic representation, Temperature-rise limit, Testing conditions, Electronic equipment and components, Electric control equipment, Switches, Switchgear, Type testing, Semiconductor devices, Test equipment, Ratings, Contactors, Electric load, Grades (quality), Marking, Electrical equipment, Verification, Low-voltage equipment

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