ZMM1L系列塑料外壳式断路器(以下简称漏电断路器)，适用于交流50Hz(或60Hz)，其额定绝缘电压为800V，额定工作电压400V，额定工作电流至630A(800A)的电路中作不频繁转换及电动机不频繁起动之用。断路器具有过载、短路和欠电压保护功能，能保护线路和电源设备不受损坏；同时，可对人提供间接接触保护，还可以对过电流保护不能检测出的长期存在的接地故障可能引起的火灾危险提供保护。在其他保护装置失灵时，额定剩余动作电流为30mA的ZMM1L漏电断路器可直接起附加保护。

断路器按照其额定极限短路分断能力，分为L型(标准型)、M型(高分断型)。

该断路器具有体积小、分断能力高、飞弧短、抗振动等特点。

断路器可垂直安装(即竖装)，亦可水平安装(即横装)。

断路器具有隔离功能，其相应符号为：“    /   l   X   ”。

断路器符合标准：IEC60947-2及GB/T14048.2及附录B带剩余电流保护的断路器。

断路器不可倒进线，即只允许1、3、5接电源线，2、4、6接负载线。

如需倒进线可定做。

能保护线路和电源设备不受损坏，断路器保护特性齐全、精确，能提高供电可靠性

The ZMM1L series plastic-enclosed circuit breakers (hereinafter referred to as "leakage circuit breakers") are designed for use in circuits operating at AC 50Hz (or 60Hz), with a rated insulation voltage of 800V, a rated operating voltage of 400V, and a rated operating current up to 630A (800A); they are suitable for non-repeated switching operations and non-repeated motor starting applications. These circuit breakers feature overload, short-circuit, and undervoltage protection functions, enabling them to safeguard electrical circuits and power equipment from damage; additionally, they provide indirect contact protection for personnel and offer protection against fire hazards potentially caused by long-term grounding faults that may elude detection by overcurrent protection devices. When other protective devices fail, the ZMM1L leakage circuit breaker, with a rated residual operating current of 30mA, can serve as an additional protective measure.

Circuit breakers are classified into L-type (standard type) and M-type (high-breaking capacity type) based on their rated maximum short-circuit breaking capacity. These circuit breakers feature a compact size, high breaking capacity, short arc duration, and excellent vibration resistance.

Circuit breakers can be installed vertically (i.e., upright installation) or horizontally (i.e., horizontal).

The circuit breaker has an isolation function; its corresponding symbol is:"    /   l   X   ”。 

The circuit breaker complies with the following standards: IEC 60947-2, GB/T 14048.2, and Appendix B for residual current protective circuit breakers. 

The circuit breaker cannot be configured for reverse wiring; specifically, only terminals 1, 3, and 5 may be connected to the power supply line, while terminals 2, 4, and 6 may be connected to the load line. 

If reverse wiring is required, custom fabrication can be arranged.

It protects power lines and power supply equipment from damage; the circuit breaker's protection characteristics are comprehensive and precise, thereby enhancing power supply reliability.