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AM3 series

Main technical Specifications

Type	Rated Cureent(A)	Pole number	Rated Insultating Voltage(V)	Rated Opreating Voltage(V)	Ultimate Short circuit breaking capacity(KA)			Servies short circuit breaking capacity(KA)		Operation performance (endurance)		Operation performance
					AC380V (400)	AC660V (690)	DC250	AC380V (400)	AC660V (690)	Load	Unload	L	W(3P/4P)	H
AM3-125E	12.5,16,20, 25,32,40,50, 63,80,100,125	Two three four pole	660V	≯30	15	-	-	7.5	-	3000	7000	120	76/101	70
AM3-125S					25	-	20	16	-
AM3-160S	16,20,32, 40,50,63,80, 100,125,160			380V 660V	35	8	20	18	-	4000	6000	120	90/120	70
AM3-160H					50	10	40	25	-
AM3-250S	100,125, 160,180,200, 225,250				35	10	40	18	-	2000	6000	170	105/140	103.5
AM3-250M					50	16	40	30	-
AM3-250H	200,225,250 315,350,400				65	18	40	48	-	1000	4000	254	140/184	103.5
AM3-400S					35	16	40	18	-
AM3-400M					50	20	40	20	-
AM3-400H					65	25	40	48	-
AM3-630S	400,500,630				50	20	40	30	-	1000	4000	268	210/280	103.5
AM3-630M					65	25	40	48	-
AM3-630H					80	30	40	60	-
AM3-800S	500,630 700,800				50	20	40	30	-	1000	4000	268	210/280	103.5
AM3-800M					65	25	40	48	-
AM3-800H					80	30	40	60	-

Motion characteristic

The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breakers).

Table 2

Rated current of release(A)	Thermodynamic Release (ambient templand +40℃ marine +45℃)		Operational current of magnetic release(A)
Rated current of release(A)	1.05In(cold state) inoperative time(h)	1.30In(heat state) operative time(h)	Operational current of magnetic release(A)
10≤In≤63	≥1	< 1	10-50In±20%
63<In≤250	≥2	< 2	10In±20% 5-10In±20%
250<In≤800	≥2	< 2	10In±20% 5-10In±20%

Table 3

Rated current of release(A)	Thermodynamic Release (ambient templand +40℃ marine +45℃)				Operational current of magnetic release(A)
Rated current of release(A)	1.0In(cold state) inoperative time(h)	1.20In(heat state) operative time(h)	1.50In(heat state) operative time(h)	7.2In(cold state) operative time(h)	Operational current of magnetic release(A)
12.5≤In≤400	2	2	4min	2s<Tp≤10s	12In±20%

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AM3 series

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