-400A
设计选购注意
Design and purchase attention
现在的配电系统要求断路器除了能通断电流实现电路控制和简单的短路、过载保护外，还要能提供隔离和安全保护功能，特别是在针对人身、设备安全与配电系统的可靠性方面都提出了新的要求。因此，产品的开发设计与选购也都重点考虑以下3个方面：
The current distribution system requires that the circuit breaker can provide isolation and safety protection in addition to the circuit control and simple short circuit and overload protection, especially in the reliability of the personal, equipment and distribution systems. Therefore, the development, design and purchase of products also focus on the following 3 aspects:
(1)人身安全；
(1) personal safety;
(2)电气线路与设备的保护；
(2) protection of electrical lines and equipment;
(3)可靠的、不间断的电力供应。
(3) reliable and uninterrupted power supply.