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AM8 series

AM8 Series Moulded Case Circuit Breakers

AM8 series MCCB is one of our new products developed and manufactured by adopting international advanced technology. It is supplied with rated insutaling voltage 690V and used for circuit of A.C.50/60Hz, rated operating voltage A.C. 415V or below, rated operating current from 16A to 250A. It is designed for protection of electric circuit, motors, transformers and other equipments. The products conforms to GB14048.4, IEC60947-1, IEC60947-2 & VDE0660 stardands.

Main technical Specifications

Type	Rated Cureent(A)	Pole number	Rated Insultating Voltage(V)	Rated Opreating Voltage(V)	Arcing Over Distance(mm)	Ultimate Short Circuit Breaking Capacity(KA)	Servies Short Circuit Breaking Capacity(KA)	Operation performance
								ON	OFF
AM8-160D	16,20,25,32, 40,50,63,80, 100,125,160	Three four pole	690V	380V/415V	100	25	25	4500	10000
AM8-160N						30	30
AM8-160H						70	70
AM8-160L						100	100
AM8-250N	200,225,250					35	35
AM8-250H						70	70
AM8-250L						100	100	4000	8000

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	10In±20%
63<In≤100	≥2	< 2	10In±20% 5In±20%
100<In≤800	≥2	< 2	10In±20% 5In±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%

Motion characteristic

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	10In±20%
63<In≤100	≥2	< 2	10In±20% 5In±20%
100<In≤800	≥2	< 2	10In±20% 5In±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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