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

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Product Description

Specifications

Model	Pole	Rated current (A)	Rated operating voltage (V)	Rated insulation voltage (V)	Rated ultimate short - circuit breaking capacity (Icu)			Flashover distance(mm)
Model	Pole	Rated current (A)	Rated operating voltage (V)	Rated insulation voltage (V)	Test voltage (V)	Icu (kA)	Ics (kA)	Flashover distance(mm)
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	10、16、20、25、 32、40、50、63	400	500		50	35	0
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		690			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		690			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		690			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		6910			20	10
DAM2(CM1)M-800	3	630、700、800	400	800		75	50
DAM2(CM1)H-800	3		400			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	800、1000、1250	690	800		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
3	1.5	≤8min	Cold	225 < in ≤ 630
4	7.2	4s≤T≤10s	Cold	10≤In≤225
4	7.2	6s≤T≤20s	Cold	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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DAM2(CM1) Moulded Case Circuit Breaker

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