This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of flameproof electrical equipment low-voltage terminal blocks (hereinafter referred to as terminal blocks) made of Class A arc-resistant insulation materials. This standard is applicable to low-voltage terminal blocks of dⅠ and dⅡB flameproof electrical equipment with rated voltage up to 1140V, rated current up to 630A, and frequency up to 50Hz. This standard does not apply to terminal blocks of directly introduced flameproof electrical equipment.
MT/T 412-1995 history
1995MT/T 412-1995 Low voltage connectors of flameproof electrical equipments