| Breaking Capacity: | Low Voltage Circuit Breakers |
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| Operation: | Manual Type |
| Speed: | Normal Type Circuit Breaker |
| Installation: | Fixed |
| Structure: | MCCB |
| Poles Number: | 4 |
| Samples: |
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| Customization: |
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Audited Supplier CM1LE Molded Case Circuit Breaker is one of the new breakers which have been designed and developed by the company using international advanced technology. Suitable for the circuits of AC 50Hz, rated voltage of 400V, rated current of 16A to 800A.
Application
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 circuit breaker can be mounted vertically (upright) or horizontally (transverse). DAM2 MCCB is suitable for isolation and the symbol is " ". DAM2 MCCB meets the standard: IEC60947-2 "low-voltage switchgear and control equipment, Part 2: circuit breakers."
Normal operating conditions
1.Ambient air temperature: -5ºC~+40ºC, and average temperature in 24h is below +35ºC.
2.Altitude: The altitude of the installation site is not more than 2000m.
3.Atmospheric conditions: The air relative humidity in the highest temperature +40ºC 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 +25ºC, and consider the temperature changes in product on the surface of the gel.
4.Pollution Degree: 3.
Selection of instructions
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);
Classification according to rated current of over-current release:
DAM2-63 MCCB has nine: 6,10,16,20,25,32,40,50,63 A;
DAM2-100 MCCB has nine: 16,20,25,32,40,50,63,80,100 A;
DAM2-250 MCCB has seven: 100,125,140,160,180,200,225 ,250A;
DAM2-400 MCCB has five: 225,250,315,350,400 A;
DAM2-630 MCCB has three: 400,500,630 A;
DAM2-800 MCCB has three: 630,700,800A;
DAM2-1250 MCCB has three: 800,1000,1250A.
Remark: 6A only has electromagnetic (instantaneous) type, is not recommended specifications.
According to the wiring method: wiring in front of board, wiring on back of board, insertion type of the board.
According to over-current release pattern: thermodynamic-electromagnetic (double) type, electromagnetic (instantaneous) type.
According to the outfit, it has two types: with or without outfit.
The outfit include inner accessories and outside accessories: The inner accessories have shunt release, under-voltage release, auxiliary contact and alarm contact. The outside accessories are turning handle operation mechanism, power-driven operation mechanism and so on.
According to the breaking capacity: L-standard breaking type; M-second high breaking type; H-high breaking type
Technical parameters
1, Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, DAM2-1250 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 +40ºC, 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.
Rated value of the circuit break
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Application Its main function is to provide indirect contact protection for personal electric shock of fatal danger. Rated residual operating current does not exceed residual current operated circuit breaker of 0.03A when other protection measures are invalid, also can provide supplementary protection for direct contact, but not as the only direct contact protection. At the same time, CM1LE MCCB ELCB can also prevent electrical fire caused by the contact fault current. And CM1LE MCCB ELCB can protect overload and short circuit of the circuits, can also be used for infrequent conversion of the circuits. According to the pole, it classifies four types: Note: The code with Y in parentheses means the shunt release with delay function. The delay time is 0.5s ~ 2s, control voltage is AC240V / AC400V. Classification of circuit breakers According to the poles of products: two poles, three poles and four poles. Normal operating conditions and installation conditionsAmbient air temperature Technical parameters
Note: There are 4 types of 4P 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 (see Table 3)
Characteristics of inverse time breaking action of over-current release for motor protection when every pole is power-on at the same time (products of 16A~40A without motor protection)
Residual current breaking time of the residual current operated circuit breaker Action characteristics of general residual current operated circuit-breakers of I△n ≤ 30mA should be non time-delay type. Note: a. For circuit breaker of I△n≤30mA, 5I△n can be replaced with 0.25A. b. Using 0.25A by Note a., then 10I△n is 0.5A.
Action characteristic of time delay residual current operated circuit breaker Limit non-driving time of time delay circuit breaker according to regulations of 2I△n, its action characteristic.
Instantaneous action characteristic setting value of the residual current operated circuit breaker for distribution is 10In±20%, and instantaneous action characteristic setting value of the residual current operated circuit breaker for motor protection is 12In±20%. Inverse time protection characteristic curve of residual current operated circuit breaker
Structure and working principleCM1LE series residual current operated circuit breakers are electronic residual current operated circuit breakers, mainly consists of the zero-sequence transformer, Electronic control leakage release and circuit breakers with overload and short circuit protection, all components are installed in a pair of plastic case.
When the protected circuits have overload or short circuit, the thermal magnetic release complete the delay or instantaneous trip action to make the residual current operated circuit breaker act, thereby cutting off the power supply to play the protective role in overload and shout-circuit. Inner accessory of earth leakage circuit breakers a. Undervoltage release When the voltage drops (or even slow down) to the rated voltage range of 70% and 35%, undervoltage release should act; undervoltage release should prevent residual current operated circuit breaker closing when the power supply voltage is below the release voltage of 35%; When the supply voltage is equal to or greater than 85%, undervoltage release should ensure that the residual current operated circuit breaker can be closed. The rated value and code are shown in Table 7.
b. Shunt release Residual current operated circuit breakers can be reliably disconnected at rated voltage of 70% to 110%. Rating and code (see Table 8)
Note: When the voltage specification is DC24V, the rated current is 5A ± 0.5A.
C. Auxiliary contact and alarm contact parameters
Auxiliary contact
Alarm contact
External accessories of earth leakage circuit breakers Electric operating mechanism
Installation dimensions of handle operating mechanism
Wiring diagram of leakage alarm module
Precautions: Selection principle: Outline dimensionsDimension of wiring in front of the board of CM1LE-125,250,400,630,800
Plug-in wiring diagram
Aperture diagram of plug-in wiring
Wiring on back of the board of CM1LE-100, 225
Wiring on back of the board of CM1LE-400, 630, 800
Aperture diagram of wiring o back of the board
Note: Specifications of "*" in the table is the screw-type plug-in of wiring on back of the board. How to fast selection of CBR Earth leakage circuit breaker CM1LE
Example: CM1LE-225M / 4310 150A 50mA 0.4s AC230V, means CM1LE-225 type residual current operated circuit breaker for distribution protection, frame rated current of 225A, rated current of 150A, the second high type breaking capacity, four-poles, rated residual operating current of 50mA, delay type, breaking time <0.4s, thermal magnetic release, with shunt release (AC230V). Structure chart of classification protection coordination of Earth Leakage Circuit BreakerRated current of 400A of the first level protection residual current operated circuit breaker, for example:
First level protection Connecting wires: Second level protection: Connecting wires: Third level protection: Connecting wires: Fourth level protection: Connecting wires: Ordering informationUsers must specify when ordering: 7.1 Type and name of residual current operated circuit-breakers; Example 1: Order CM1LE-1255/3328 40A 50mA <0.1s 80 units. This indicate that you order CM1LE-125/3328 residual current operated circuit breakers, rated current of over-current release is 40A, rated residual operating current is 50mA, breaking time <0.1s, three-poles, with auxiliary contacts and alarm contacts, for power distribution, 80 units. |
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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
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 requirements
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
If the requirements of the above table are not met, it is recommended to design the shunt release control circuit using the following figure
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
The rated operating voltage Ue of the pre-paid meter dedicated release is AC230/50Hz, it can worknormally in the range of (65% ~ 110%) Ue. When the Ctrl is cut off, the circuit breaker will delay 0.5s ~ 2s to be opening.
Wiring diagram of pre-paid meter dedicated release
1.4 The rated value of auxiliary contacts and alarm contacts in Table 5
| 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 |
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 | DAM2-63. 125. 250 | DAM2-400. 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 DAM2-63,100,225 electric operating mechanism(AC)
The principle diagram of the opening and closing of DAM2-400,630,800,1250 electric operating mechanism(AC)
2.2 Installation dimensions of manual operating mechanism shown in Table 10
Diagram of handle mounting hole of DAM2-63~800
Total height of electric/manual operating mechanism of circuit breaker (mm)(shown in Table 12)
| Model | Total height of electric operating mechanism H |
Installation dimensions
of manual operating mechanism H |
| DAM2L-63 | 155 | 49 |
| DAM2M/H-63 | 164 | 49 |
| DAM2L-100 | 152 | 51 |
| DAM2M/H-100 | 170 | 51 |
| DAM2L-225 | 182 | 54 |
| DAM2M/H-225 | 199 | 54 |
| DAM2L/M/H-400 | 255 | 88 |
| DAM2M/H-630 | 262 | 89 |
| DAM2M/H-800 | 261 | 96 |
| DAM2H-1250 | 290 | 103 |
How to fast Selection Table of DAM2 Series Molded Case Circuit Breaker
| Corresponding letters |
Function name | Function corresponding to the model |
| a | Model features | DAM2 Molded Case
Circuit Breaker |
| b | Frame rated current code | 63A,100A,225A,
400A,630A,800A, 1250A |
| c | Breaking capacity characteristic code |
L-standard breaking type;
M-second high breaking type; 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 |
Example: DAM2L-100 / 33102 63A means DAM2-type molded case circuit breaker, frame rated current is 100A, breaking capacity is the standard type, handle operation, 3 poles, double release, with shuntrelease, for motor protection, rated current is 63A.
Selection, installation, use should be consistent with the product manual or the relevant national standards.
Note: N-pole type of 4P circuit breaker is divided into A-type, B-type, which is not specified defaults to B type.
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