DAM2 Moulded Case Circuit Breaker
DAM2 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.
Product Description
DAM2 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).
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.
Specifications
According to the pole, it classifies four types:
Type A: N-pole without over-current release components, and N-pole has been connected all along, and does not act with other three poles to turn on or off;
B-type: N-pole without over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);
Type C: N-pole fixed with over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);
Technical parameters
1, Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, DAM2(CM1)-1250 is 7In±20%; Instantaneous action characteristic set value of the circuit breaker for motor protection is 12In ± 20%.
2, The rated value of the circuit breaker in Table 2.3, In the ambient temperature of +40℃, the circuit breaker for distribution over-current release action characteristics shown in Table 3, the circuit breaker for motor protection over-current release action characteristics shown in Table 4.
| Model | Pole | Rated current (A) | Rated operating voltage (V) | Rated insulation voltage (V) | Rated ultimate short - circuit breaking capacity (Icu) | Flashover distance(mm) | ||
| 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、2025、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.
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 | 0.8 | 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 | 0.8 | 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 |
Outline and installation dimensions Dimension
of wiring in front of the board
| 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 | – | – | – |
| Model | H | H1 | H2 |
| DAM2(CM1)-100L/2P | 86 | 104 | 24 |
| DAM2(CM1)-100L/3P | 68 | 86 | 24 |
| DAM2(CM1)-100M/3P | 86 | 104 | 24 |
| DAM2(CM1)-100H/3P | 86 | 104 | 24 |
| DAM2(CM1)-100M/4P | 86 | 104 | 24 |
| DAM2(CM1)-100H/4P | 86 | 104 | 24 |
| Model | H | H1 | H2 |
| DAM2(CM1)-225L/2P | 104 | 127 | 24 |
| DAM2(CM1)-225L/3P | 86 | 110 | 24 |
| DAM2(CM1)-225M/3P | 103 | 127 | 24 |
| DAM2(CM1)-225H/3P | 103 | 127 | 24 |
| DAM2(CM1)-225M/4P | 103 | 127 | 24 |
| DAM2(CM1)-225H/4P | 103 | 127 | 24 |
| Model | H | H1 | H2 |
| DAM2(CM1)-400L/3P | – | – | – |
| DAM2(CM1)-400M/3P | – | – | – |
| DAM2(CM1)-400H/3P | – | – | – |
| DAM2(CM1)-400L/4P | – | – | – |
| DAM2(CM1)-400M/4P | – | – | – |
| DAM2(CM1)-400H/4P | – | – | – |
| Model | H | H1 | H2 |
| DAM2(CM1)-630M/3P | – | – | – |
| DAM2(CM1)-630H/3P | – | – | – |
| DAM2(CM1)-630M/4P | – | – | – |
| DAM2(CM1)-630H/4P | – | – | – |
| Model | H | H1 | H2 |
| DAM2(CM1)-800H/3P | – | – | – |
| DAM2(CM1)-800H/4P | – | – | – |
1、Internal accessory of circuit breakers
1.1 Shunt release
Rated control supply voltage of the shunt release: AC50Hz, 230V, 400; DC110V, 220V, 24V; When between 70%~110%, can break the circuit breaker reliably.
When rated control supply voltage of the shunt release is DC24V, the maximum length of copper wire should meet the following requirement
1.2 Under-voltage release
When the power supply voltage drops to under-voltage release rated voltage of 70% to 35% of the range, the under-voltage release circuit breaker reliable break; when the supply voltage is below the rated voltage undervoltage release 35%,Under-voltage release to prevent the circuit breaker is closed; when the supply voltage is higher than 85% of the rated voltage of the under-voltage release, the under-voltage release ensures that the circuit breaker is closed. The undervoltage releases are rated at AC50Hz, 230V,400V.
Special Note: The circuit breaker with undervoltage release, only in the under-voltage with rated voltage, which can open and close normally.
1.3 Pre-paid meter dedicated release
| Classification | Conventional thermal current (Ith) | Rated current when AC 400V Ie(AC-15) | Rated current when DC 220V Ie(DC-13) |
| Auxiliary contact | 3 | 0.4 | 0.15 |
| Alarm contact | 3 | 0.3 | 0.15 |
1.4 The auxiliary contacts and alarm contacts
a. Auxiliary contact
b. Alarm contact
Alarm contacts don’t act when the circuit breaker opens and closes normally, alarm contacts switch between normal opening and normal closing only after free tripping or fault tripping.
2、External Accessory for Circuit Breakers
2.1 Motor operating mechanism. The rated value and code are shown in Table 6.
| Category/Model | DAM2(CM1)-63. 125. 250 | DAM2(CM1)-400. 630. 800. 1250 |
| Structure type | Electromagnet | Motor |
| AC voltage code | AC50Hz、230V、400 | AC50Hz、230V、400 |
| DC voltage code | DC110V、220V | DC110V、220V |
NOTE: After the tripping of circuit-breaker with electric operating mechanism, the electric operating mechanism must make the circuit-breaker buckle again, then it can close.
The principle diagram of the opening and closing of DAM2(CM1)-400、630、800、1250 electric operating mechanism(AC)
2.2 Installation dimensions of manual operating mechanism shown in Table 10
Diagram of handle mounting hole of DAM2(CM1)-63~800
How to fast Selection Table of DAM2(CM1) Series Molded Case Circuit Breaker
DAM2(CM1)-225 L P/3 3 10 2 T 200A
| Corresponding letters | Function name | Function corresponding to the model |
| a | Model features | DAM2(CM1) Molded CaseCircuit Breaker |
| b | Frame rated current code | 63A、100A、225A、400A、630A、800A、 1250A |
| c | Breaking capacity characteristic | L-standard breaking type;M-second high breaking type; |
| code | H-high breaking type | |
| d | Operation mode code | No code for handle operation;P for electric operation; |
| Z for turning handle operation | ||
| e | Pole | 2-two poles;3-three poles; 4-four poles |
| f | Release name | 2 Electromagnetic release;3 Double release |
| g | Accessory | 00 Without accessory 08 Alarm contact 10 Shunt release 20 Auxiliary contact 30 Undervoltage release 40 Shunt release, Auxiliary contact 50 Shunt release, Undervoltage release 60 Two sets of auxiliary contacts 70 Auxiliary contact, Undervoltage release 18 Shunt release, Alarm contact 28 Auxiliary contact, Alarm contact 38 Undervoltage release, Alarm contact 48 Shunt release, Auxiliary contact, Alarm contact 58 Shunt release, Undervoltage release, Alarm contact 68 Two sets of auxiliary contacts, Alarm contact 78 Auxiliary contact, Undervoltage release, Alarm contact 10Y Pre-paid meter dedicated release 40Y Pre-paid meter dedicated release, Auxiliary contact 50Y Pre-paid meter dedicated release, Auxiliary contact, Undervoltage release 18Y Pre-paid meter dedicated release, Alarm contact 48Y Pre-paid meter dedicated release, Auxiliary contact, Alarm contact 58Y Pre-paid meter dedicated release, Undervoltage release, Alarm contact |
| h | Application | No code for distribution;2 for motor protection |
| i | Conventional products | No code;T for transparent cover products |
| j | Amperage | 10、16、20、25、32、63、80、100、125、160、180、200 、225、250、315、350、400、500、630、700、800、1000 、1250 |
Product Features
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