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Quick Details

Type: Air
Model Number: CM1
Brand Name: CHIQI
Place of Origin: China (Mainland)

Specifications

CMI Moulded Case Circuit Breaker (mccb)

Application
CM1 series moulded case circuit breaker(MCCB) is one of products developed and manufactured by Adopting international advanced technology. It is supplied with rated insulating voltage 800V and used for circuit of A. C. 50Hz, rated operating voltage AC 400V (or below), rated operating Current up to 800A for infrequent changing over and starting of the motors. The products conforms to IEC60947-2 standard.

Type Rated
current (A) 		Polenum-ber Ratedinsui-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
Load Unload
CM1-63L (6), 10
16, 20
25, 32
40, 50
63 		3, 4 500V 400V 0 25 18 1500 8500 A
CM1-63M 0 50 35
 CM1-100L (10), 16
20, 25
32, 40
50, 63
80, 100 		800V 0(≤ 50) 35 22
CM1-100M 0(≤ 50) 50 35
CM1-100H 0(≤ 50) 85 50 1000 7000
 CM1-225L 100, 125
160, 180
200, 225 		≤ 50 35 22
AM1-225M ≤ 50 50 35
CM1-225H ≤ 50 85 50 1000 4000
CM1-400L 225, 250
315, 350
400 		≤ 50 50 35
CM1-400M ≤ 100 65 42
CM1-630L 400, 500
630 		≤ 100 50 35
CM1-630M ≤ 100 65 42
CM1-630H ≤ 100 100 65
CM1-800M 630, 700
800 		3 ≤ 100 75 50
CM1-800H ≤ 100 100 65
CM1-1250M 1000, 1250 ≤ 100 100 65
CM1-1250H ≤ 100 125 75
CM1-1600M 1600 ≤ 100 150 80


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.

3. 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).



Table2
Rated current of release (A) Thermodynamic release( ambient temperature ) land +40° C marine +45° C Operating current of magnetic release (A)
1.05In(cold state) Inoperative time(h) 1.30In(heat state) Operative time(h)
10≤ In≤ 63 ≥ 1 < 1 10In± 20%
63< In≤ 100 ≥ 2 < 2
100≤ In≤ 800 ≥ 2 < 2 5In± 20% 10In± 20%


Table3
Rated current Thermodynamic release ( ambient temperature ) land +40° C marine +45° C Operating 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 ≤ 4min 4s < Tp ≤ 10s 12In± 20%
225 ≤ In ≤ 630 ≤ 8min 6s < Tp ≤ 20s