一般：

它适用于交流50 / 60Hz，额定绝缘电压高达800V，额定工作电压400 / 690V和额定工作电流高达1250A的电路，用于偶尔的转换以及电机的不频繁启动（I≤630A及以下） 。它具有防止过载，短路或欠压的保护功能，保护电路和电源设备免受损坏

技术参数：

*型号：hkkm1-63
*机架尺寸额定电流Inm（A）：63
*额定电流In（A）：40
*额定极限短路分断能力等级：L，M
*极数（P）：3，3，4
*额定极限短路分断能力Icu（KA）：AC400V，25，50
*额定功率短路分断能力Ics（KA）：AC400V，18，35
*额定工作电压Ue（V）：AC 400
*额定绝缘电压Ui（V）：500,800
*额定冲击耐受电压Uimp（V）：400,800
*闪络距离（mm）：≤50
*适用性：隔离

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General:

It is suitable for circuitries of AC 50/60Hz, rated insulation voltage up to 800V, rated working voltage of 400/690V and rated working current up to 1250A, used for infrequent changover as well as motor's infrequent startup (I≤630A and below). It has protective functions against overload, short circuit or under voltage, protects the circuitries and power equipment from being damaged

Technical parameters:

* Model: HKKM1-63
* Frame size rated current Inm(A): 63
* Rated current In(A): 40
*Class of rated ultimate short-circuit breaking capacity: L, M
* Pole number (P): 3, 3, 4
* Rated ultimate short-circuit breaking capacity Icu (KA): AC400V , 25 , 50
* Rated services short-circuit breaking capacity Ics (KA): AC400V ,18 , 35
* Rated operating voltage Ue(V): AC 400
* Rated insulation voltage Ui (V): 500 , 800
* Rated impulse withstand voltage Uimp (V): 400 , 800
* Flashover distance (mm): ≤ 50
*Applicability: Isolation

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