3 poles 4 poles Cm1 MCCB (molded case circuit breaker)

1250A 3 pole 4 pole CM1 Moulded Case Circuit Breaker CM1 MCCB SM1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 550 and 800V and used for circuit of AC 50/60Hz, rated operating voltage AC 400V (or

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1250A 3 pole 4 pole CM1 Moulded Case Circuit Breaker CM1 MCCB3 Pole 4 Pole Cm1 MCCB (Moulded Case Circuit Breaker)

 

SM1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 550 and 800V and used for circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operating current up to 1600A for infrequent changing over and starting of the motors.The products conforms to IEC60947-2 standard.
 3 Pole 4 Pole Cm1 MCCB (Moulded Case Circuit Breaker)
3 Pole 4 Pole Cm1 MCCB (Moulded Case Circuit Breaker)
3 Pole 4 Pole Cm1 MCCB (Moulded Case Circuit Breaker)

Specification
 

Type
Rated
current (A)
Polenum-berRatedinsui-atingvolt-age(V)Rated
operat-ingvolt-age(V)
Arcing-
over
distance
(mm)
Ultimate
short
circuit
breaking
capacity
(KA)
Servies
short
circuit
breaking
capacity
(KA)
Operation
perform-
ance
Utiliza-tioncat-egory
LoadUnload
SM1-63L(6),10
16,20
25 ,32
40,50
63
3, 4500V400V0251815008500A
SM1-63M05035
SM1-100L(10),16
20,25
32,40
50,63
80,100
800V0(≤50)3522
SM1-100M0(≤50)5035
SM1-100H0(≤50)855010007000
SM1-225L100,125
160,180
200,225
≤503522
SM1-225M≤505035
SM1-225H≤50855010004000
SM1-400L225,250
315,350
400
≤505035
SM1-400M≤1006542
SM1-630L400,500
630
≤1005035
SM1-630M≤1006542
SM1-630H≤10010065
SM1-800M630,700
800
3≤1007550
SM1-800H≤10010065
SM1-1250M1000,1250≤10010065
SM1-1250H≤10012575
SM1-1600M1600≤10015080


Note: 6A without thermal protection
The N-pole of four-poles breaker is sited at the right side of the product has four types:
Type A: Without current trip-lease on N pole which making all the time, not closing and opening with the other three poles.
Type B: Without current trip-release on N pole which closing and opening with the other poles.
Type C: With current trip-release which closing and opening with the other three poles.
Type D: With current trip-release which making all the time not closing and opening with the other three poles.
 

Protection 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 breaker).
 

Rated current of release (A)
Thermodynamic release( ambient temperature ) land +40°C marine +45°COperating current of magnetic release (A)
1.05In(cold state) Inoperative time(h)1.30In(heat state) Operative time(h)
10≤In≤63≥ 1< 110In±20%
63<In≤100≥ 2< 2
100≤In≤800≥ 2< 25In±20% 10In±20%
 

Rated current
Thermodynamic release ( ambient temperature ) land +40°C marine +45°COperating current of magnetic release (A)
of release (A)1.0In(cold state) non-trip time(h)1.20In(heat state) trip time (h)1.50In(heat state) trip time (h)7.2In(cold state) trip time(h)
10 ≤ In ≤ 225≥ 2<2≤ 4min4s < Tp ≤ 10s12In±20%
225 ≤ In ≤ 630≤ 8min6s < Tp ≤ 20s

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