DAM2(CM1) Moulded Case Circuit Breaker
DAM2(CM1) series the rated insulation voltage of the circuit breaker is 800V,it is suitable for the distribution network of AC 50Hz / 60Hz, rated working voltage of 690V and rated current of 1250A, to distribute power and protect circuit and power equipment from being damaged caused by overload , short-circuit, under-voltage and other fault. Also for protection infrequent conversion of the circuits and infrequent start of motor and overload, short circuit, under voltage. DAM2(CM1) circuit breaker can be mounted vertically (upright) or horizontally (transverse). DAM2(CM1) MCCB is suitable for isolation and the symbol is ” “. DAM2(CM1) MCCB meets the standard: IEC60947-2 “low-voltage switchgear and control equipment
Specifications
| Model | Pole | Rated current (A) | Rated operating voltage (V) |
Rated insulation voltage (V) |
Rated ultimate short – circuit breaking capacity (Icu) | Flashover distance(mm) |
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| Test voltage (V) | Icu (kA) | Ics (kA) | ||||||
| DAM2(CM1)L-63 | 3 | 10、16、20、25、 32、40、50、63 |
400 | 500 | 400×1.10 | 25 | 18 | 0 |
| DAM2(CM1)M-63 | 3、4 | 50 | 35 | |||||
| DAM2(CM1)L-100 | 3、4 | 16、20、25、32、40、 50、63、80、100 |
400 | 800 | 30 | 22 | ≤50 | |
| DAM2(CM1)M-100 | 2、3、4 | 50 | 35 | |||||
| DAM2(CM1)H-100 | 3 | 85 | 50 | |||||
| DAM2(CM1)L-100 | 3、4 | 690 | 10 | 5 | ||||
| DAM2(CM1)M-100 | 2、3、4 | 20 | 10 | |||||
| DAM2(CM1)L-225 | 3、4 | 100、125、140、 160、180、200、225 |
400 | 800 | 35 | 25 | ||
| DAM2(CM1)M-225 | 2、3、4 | 50 | 35 | |||||
| DAM2(CM1)H-225 | 3 | 85 | 50 | |||||
| DAM2(CM1)L-225 | 3、4 | 690 | 10 | 5 | ||||
| DAM2(CM1)M-225 | 2、3、4 | 20 | 10 | |||||
| DAM2(CM1)L-400 | 3 | 225、250、315、 350、400 |
400 | 800 | 50 | 35 | ≤100 | |
| DAM2(CM1)M-400 | 3、4 | 65 | 42 | |||||
| DAM2(CM1)H-400 | 3 | 100 | 65 | |||||
| DAM2(CM1)L-400 | 3 | 690 | 15 | 8 | ||||
| DAM2(CM1)M-400 | 3、4 | 20 | 10 | |||||
| DAM2(CM1)L-630 | 3 | 400、500、630 | 400 | 800 | 50 | 35 | ||
| DAM2(CM1)M-630 | 3、4 | 65 | 42 | |||||
| DAM2(CM1)H-630 | 3 | 100 | 65 | |||||
| DAM2(CM1)L-630 | 3 | 6910 | 15 | 8 | ||||
| DAM2(CM1)M-630 | 3、4 | 20 | 10 | |||||
| DAM2(CM1)M-800 | 3 | 630、700、800 | 400 | 800 | 75 | 50 | ||
| DAM2(CM1)H-800 | 3 | 100 | 65 | |||||
| DAM2(CM1)M-800 | 3 | 4690 | 30 | 15 | ||||
| DAM2(CM1)-1250 | 3 | 800、1000、1250 | 400 | 800 | 85 | 42 | ||
| DAM2(CM1)-1250 | 3 | 690 | 25 | 12.5 | ||||
Rated value of the circuit break
Note: 2-poles, 4-poles circuit breakers, divided into L, M, H, they have the same breaking index as M-type.
Characteristics of inverse time breaking action of circuit breakers over-current release for power distribution when every pole is power-on at the same time
| No. | Test current | I/In | Set time | Initial state |
| 1 | Conventional non-tripping current | 1.05 | 2h(In>63A)，1h(In≤63A) | Cold |
| 2 | Conventional non-tripping current | 1.30 | 2h(In>63A)，1h(In≤63A) | Immediately after Test 1 |
Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, and instantaneous action characteristic setting value of the circuit breaker for motor protection is 12In±20%.
Characteristics of inverse time breaking action of circuit breakers over-current release for motor protection when every pole is power-on at the same time
| No. | I/In | Set time | Initial state | Remark |
| 1 | 1.0 | >2h | Cold | |
| 2 | 1.2 | ≤2h | Immediately after Test 1 | |
| 3 | 1.5 | ≤4min | Cold | 10≤n≤225 |
| ≤8min | 225 < in ≤ 630 | |||
| 4 | 7.2 | 4s≤T≤10s | Cold | 10≤In≤225 |
| 6s≤T≤20s | 225 < in ≤ 630 |
Accessories
Inverse time protection characteristic curve
Derating factors table of temperature changes
| Model/Coefficient/Temperature | +40℃ | +45℃ | +50℃ | +55℃ | +60℃ |
| DAM2(CM1)-63 | 1 | 0.94 | 0.88 | 0.80 | 0.72 |
| DAM2(CM1)-100 | 1 | 0.95 | 0.89 | 0.84 | 0.76 |
| DAM2(CM1)-225 | 1 | 0.96 | 0.91 | 0.87 | 0.82 |
| DAM2(CM1)-400 | 1 | 0.94 | 0.84 | 0.80 | 0.73 |
| DAM2(CM1)-630 | 1 | 0.93 | 0.88 | 0.83 | 0.76 |
| DAM2(CM1)-800 | 1 | 0.93 | 0.88 | 0.83 | 0.76 |
| DAM2(CM1)-1250 | 1 | 0.88 | 0.83 | 0.79 | 0.76 |
| Model | H | H1 | H2 |
| DAM2(CM1)-63L/3P | 74 | 89 | 19 |
| DAM2(CM1)-63M/3P | 82 | 98.5 | 28.5 |
| DAM2(CM1)-63H/3P | 82 | 98.5 | 28.5 |
| DAM2(CM1)-63L/4P | – | – | – |
| DAM2(CM1)-63M/4P | – | – | – |
| DAM2(CM1)-63H/4P | – | – | – |
Product Features
● Ambient air temperature: -5℃~+40℃, and average temperature in 24h is below +35℃.
● Altitude: The altitude of the installation site is not more than 2000m.
● Atmospheric conditions: The air relative humidity in the highest temperature +40℃ is not more than 50%; In the low temperature can have higher relative humidity. The maximum average relative humidity is 90%, while the average monthly minimum temperature is +25℃, and consider the temperature changes in product on the surface of the gel.
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