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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