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Standard
| JB/T 7121-1993 Modulized terminal combination electric appliances (English Version) |
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Detail of JB/T 7121-1993
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Introduction of JB/T 7121-1993
本标准规定了模数化终端组合电器（以下简称组合电器）的使用条件，结构和性能要求，试验和检验规则等内容。
本标准适用于交流50Hz，额定电压到380V户内固定式组合电器，其额定电流不超过250A，每个短路保护电器的额定电流不超过125A。
对某些特殊用途的组合电器，除应符合本标准有关要求外，其特殊要求应由用户制造厂协商。
Contents of JB/T 7121-1993