産品優勢
緊湊而簡潔，TeSys GV2電動機斷路器隻有45mm寬，并根據控制類型，分斷能力，電動機保護元件及配件等不同性能和功能進行分類。
應用範圍
電動機控制與保護性能符合IEC 947-2 and IEC 947-4-1标準；
方便地安裝在任何設備上，采用螺釘固定或夾緊安裝在導軌上。
英文說明
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;
Open and closed motor circuit breakers installed in the control device can be used three padlocks locked in "N / C" position.
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.
選擇原則
使用斷路器來保護電動機，必須注意電動機（主要是交流感應電動機）的兩個特點：其一是具有一定的過載能力；其二是起動電流通常是額定電流的幾倍（可逆運行或反接制動時甚至可達十幾倍）。所以，為了保證電動機可靠地運行和順利地起動，在選擇斷路器時應遵循以下原則：
（1）按電動機的額定電流來确定斷路器的長延時動作電流整定值。
（2）斷路器的6倍長延時動作電流整定值的可返回時間要長于電動機的實際起動時間。
（3）斷路器的瞬時動作電流整定值：籠型電動機應為8～15倍脫扣器額定電流；繞線型電動機應為3～6倍脫扣器額定電流。
當然，對于需要頻繁起動的電動機，如果斷相運行機率不高或者有斷相保護裝置，采用熔斷器與磁力起動器結合的方式來控制和保護，也是比較合适的，因為這種保護方式便于遠距離控制。
