电动机断路器是一个断路器。

紧凑而简洁，TeSys GV2电动机断路器只有45mm宽，并根据控制类型，分断能力，电动机保护元件及配件等不同性能和功能进行分类。

电动机控制与保护性能符合IEC 947-2 and IEC 947-4-1标准；

方便地安装在任何设备上，采用螺钉固定或夹紧安装在导轨上。

Performance Description

When the motor circuit breakers operate on their own can be manually controlled (controlled by the button or knob control), the connection may then access the remote control device;

Integrated thermal motor protection by the following - electromagnetic devices to provide circuit breaker;

All live parts are protective, not from the front panel directly from the finger touch;

With undervoltage release module, so you can switch off voltage conditions;

With SHT module, disconnect the device can use the remote control;

Superiority

Compact and concise, TeSys GV2 motor circuit breaker is only 45mm wide, and according to type of control, breaking capacity, motor protection devices and accessories, performance and functions of different categories.

Applications

Motor control and protection performance in line with IEC 947-2 and IEC 947-4-1 standards;

Easily installed on any device, fixed or clamped by screws installed in the rail.

使用断路器来保护电动机，必须注意电动机（主要是交流感应电动机）的两个特点：其一是具有一定的过载能力；其二是起动电流通常是额定电流的几倍（可逆运行或反接制动时甚至可达十几倍）。所以，为了保证电动机可靠地运行和顺利地起动，在选择断路器时应遵循以下原则：

（1）按电动机的额定电流来确定断路器的长延时动作电流整定值。

（2）断路器的6倍长延时动作电流整定值的可返回时间要长于电动机的实际起动时间。

（3）断路器的瞬时动作电流整定值：笼型电动机应为8～15倍脱扣器额定电流；绕线型电动机应为3～6倍脱扣器额定电流。

当然，对于需要频繁起动的电动机，如果断相运行机率不高或者有断相保护装置，采用熔断器与磁力起动器结合的方式来控制和保护，也是比较合适的，因为这种保护方式便于远距离控制。