This section applies to the electrical types specified in 1.1 and 1.2, with the main contact used to connect circuits with a rated voltage of AC not exceeding 1000 V or DC not exceeding 1500 V. The starters and/or contactors involved in this section are generally not used to break short-circuit currents. So appropriate short-circuit protection appliances (see 9.3.4) form a part of the equipment, but are not necessary for contactors or starters. This section applies to the following contactors and starters: - - Contactors equipped with overload and/or short circuit protection appliances; - Starters equipped with separate short circuit protection appliances and/or separate short circuit protection appliances with their own overload protection appliances--- After assembling a contactor or starter with a short-circuit protection device according to specified conditions, such as a comprehensive starter or protective starter, it is considered as an integral unit. In integrated starters and protective starters, circuit breakers or fuse combinations used as short-circuit protection devices should correspondingly meet the requirements of GB14048.2 and GB 14048.3
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