GB/T 14048.4-2010 in English

本部分适用于1.1和1.2所规定的电器型式,其主触头用于连接额定电压交流不超过1000V 或直流不超过1500V 的电路。
本部分涉及的起动器和(或)接触器一般不用于分断短路电流。所以适当的短路保护电器(见9.3.4)构成了设备的一部分,但并不是接触器或起动器必需的。
本部分适用于下列接触器和起动器:
―――配有过载和(或)短路保护电器的接触器;
―――配有分立的短路保护电器和(或)配有分立的短路保护电器且自身具有过载保护电器的起动器;
―――接触器或起动器按规定的条件与短路保护电器组装后,例如综合式起动器或保护式起动器,被视为一个整体单元。
在综合式起动器和保护式起动器中,作为短路保护电器的断路器或熔断器组合电器,相应地应满足GB14048.2和GB14048.3的要求。

Scope

This standard applies to the types of appliances specified in 1.1 and 1.2, the main contacts of which are used for connection to circuits with a rated voltage not exceeding 1000 V a.c. or 1500 V d.c. The starters and (or) contactors involved in this section are generally not used for breaking short-circuit currents. So proper short circuit protective devices form part of the equipment, but are not required for contactors or starters. This section applies to the following contactors and starters: contactors equipped with overload and (or) short-circuit protective devices; with separate short-circuit protective devices and (or) with separate short-circuit protective devices and their own overload protective devices Starter; After the contactor or starter is assembled with the short-circuit protective device according to the specified conditions, such as an integrated starter or a protective starter, it is regarded as an integral unit. In the integrated starter and protective starter, the circuit breaker or fuse combination as a short-circuit protection device should meet the requirements of GB 14048.2 and GB 14048.3 accordingly.