Circuit Breaker>>Mould Case Circuit Breaker>>AM3 Series
1.Application
AM3 series moulded case circuit breaker , it's applicable circuit of AC 50Hz(or 60Hz),ratedinsulation voltage 690V(AM3-125 500V),rated operating voltage AC 690V or below ,rated oper-ating current 12.5-1600A, for distribute energy of electric and infrequent making and breakingcircuit in normal condition. The circuit-breakers are provided with the function of the protectionagainst overload and short circuit and under-voltage. The circuit breakers comply with standardof IEC60947-2.The circuit-breakers are double insulating (Inm=250A or above), the controlcircuit of the accessories is set apart with the main circuit , and doesn't need to open the coverof the circuit-breaker when install the accessories.
2. Specification
Type |
Pole |
Rated insulating voltage(V) |
Rated operating voltage(V) |
Ultimate short circuitbreaking capacity Icu(KA) |
Rated short-circuitserrice breakingcapocity Ics(%icu) |
|
AC380V (400) |
AC660V (690) |
|||||
AM3-125L |
1,2,3,4 |
500 |
500 |
25 |
- |
50% |
AM3-160L |
3,4 |
690 |
690 and below |
35 |
8 |
75% |
AM3-160M |
50 |
10 |
75% |
|||
AM3-250L |
800 |
35 |
14 |
100% |
||
AM3-250M |
65 |
18 |
75% |
|||
AM3-250H |
85 |
20 |
75% |
|||
AM3-400L |
35 |
18 |
100% |
|||
AM3-400M |
65 |
22 |
100% |
|||
AM3-400H |
100 |
30 |
75% |
|||
AM3-630L |
35 |
20 |
100% |
|||
AM3-630M |
50 |
22 |
100% |
|||
AM3-630H |
65 |
25 |
100% |
|||
AM3-800L |
35 |
20 |
100% |
|||
AM3-800M |
50 |
22 |
100% |
|||
AM3-800H |
65 |
25 |
100% |
|||
AM3-1250/1600L |
3 |
50 |
20 |
100% |
||
3. Trip units main technical parameter
Type |
Thermal magnetic release |
Electronic release |
||
Rated currentIn(A) |
Note |
Rated current In(A) |
Note |
|
AM3-125 |
12.5,16,20, 25,32,40,50, 63,80,100,125 |
T fixedM 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 fixedM fixed |
630 |
|
AM3-800 |
630,700,800 |
T fixedM 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.