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AM3 Series Moulded Case Circuit Breaker

AM3-400L/3P

Table 2

Type	Thermal magnetic release		Electronic release
Type	Rated current In(A)	Note	Rated current In(A)	Note
AM3-125	12.5,16,20,25,32,40, 50,63,80,100,125	T fixed M fixed	-
AM3-160	16,20,25,32,40,50, 63,80,100,125,160	T adjustable (0.7~1In) M fixed	-
AM3-250	100,125,160,180, 225,250	T adjustable (0.7~1In) M fixed	-
AM3-400	225,250,315, 350,400	T fixed or adjustable (0.7~1In) M fixed	320,400	I1=0.4…1 ×In AM3 PR211(L-LI) I1=0.4…1 × In AM3 PR212(LSI-LSIG) Tripping between 1.05…1.3 × I1 (IEC60947-2) I²t=constant (Long-time overload protection) I2=1-2-3-4-6-8-10 × In t2=0.05s, 0.1s, 0.25s, 0.5s adjustable (Short-circuit short time delay protection) I3=1.5-2-4-6-8-10-12 × In (Instantaneous short-circuit protection) I4=0.2-0.3-0.4-0.6-0.8-0.9-1 × In t4= 0.1s, 0.2s, 0.4s, 0.8s adjustable (Earth fault protection)
AM3-630	400,500,630	T fixed M fixed	630
AM3-800	630,700,800	T fixed M fixed	800
AM3-1250	-	-	800,1000, 1250
AM3-1600	-	-	1000,1250, 1600

Note: T-thermal M-magnetic L-long time S-short time relay I-instantaneous G-earth fault AM3-125/160 In=12.5,16,20,32,40 magnetic protection that is fixed at 500A.

4. Accessories
4.1 The external accessories of the breaker
· Motor-driven operation device
1) Wiring diagram of type CDM electromagnetic operation device(fitting AM3-125,160,250) see the following drawing (wiring diagram of the external accessories of the breaker in the dotted frame)

Code description: SB₁‚SB₂ stand for push button.(provided by users themselves)
Number "1" ‚"2"‚"3" stand for number of wiring terminals.
Voltage rating: AC50Hz 230V‚400V, DC 220V

2) Wiring diagram of type CD motor-driven operation device (fitting AM3-400‚630‚800) see belows (wiring diagram of the external accessories of the breaker in the dotted frame)

AM3-400L/3P

Plug-in base

Electromagnetic operation device

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