| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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Introducing the DAM2 (CM1) series circuit breaker, a powerhouse with a rated insulation voltage of 800V, designed for AC distribution networks at 50Hz/60Hz. It operates confidently with a rated working voltage soaring up to 690V and handles a robust current of up to 1250A. Tailored for power distribution, it ensures protection of circuits and equipment against overloads, short-circuits, under-voltage, and other faults. Additionally, it facilitates infrequent circuit conversions and motor startups with ease. This versatile breaker offers both vertical and horizontal installations and is suitable for isolation as marked by the symbol " ". The DAM2 MCCB proudly complies with the IEC60947-2 standard for low-voltage switchgear and control gear, Part 2: circuit breakers.
1. Ambient air temperature: Maintains optimal performance from -5ºC to +40ºC, with an average daily temperature not surpassing +35ºC.
2. Altitude: Ensures superior functionality at installation sites with altitudes up to 2000 meters.
3. Atmospheric conditions: At a peak of +40ºC, the relative humidity is controlled below 50%. Increased humidity levels are permissible at cooler temperatures, with a maximum average relative humidity of 90% and a minimum average monthly temperature of +25ºC, accommodating condensation due to temperature fluctuations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: N-pole lacks over-current release components, remains persistently connected, and does not operate alongside the other three poles.
Type B: N-pole devoid of over-current release components operates synchronously with other three poles (N-pole engages before disengagement).
Type C: N-pole equipped with over-current release components operates in tandem with the other three poles (N-pole engages prior to disengagement).
Classified by rated current of over-current release:
DAM2-63 MCCB offered in nine distinctive ratings: 6, 10, 16, 20, 25, 32, 40, 50, 63 A.
DAM2-100 MCCB offered in nine distinctive ratings: 16, 20, 25, 32, 40, 50, 63, 80, 100 A.
DAM2-250 MCCB available in seven dynamic ratings: 100, 125, 140, 160, 180, 200, 225, 250 A.
DAM2-400 MCCB available in five powerful ratings: 225, 250, 315, 350, 400 A.
DAM2-630 MCCB available in three superior ratings: 400, 500, 630 A.
DAM2-800 MCCB available in three advanced ratings: 630, 700, 800 A.
DAM2-1250 MCCB available in three elite ratings: 800, 1000, 1250 A.
Remark: Our 6A version is exclusively limited to the electromagnetic (instantaneous) type. Due to specification limitations, this option is generally not recommended for most applications.
Wiring Options: Tailor your setup with our versatile installation choices, including front-of-board wiring, back-of-board wiring, or insertion type wiring, to suit your unique requirements.
Over-Current Release Patterns: Our circuit breakers offer a variety of configurations to meet diverse demands. Choose between the thermodynamic-electromagnetic (dual) type or the electromagnetic (instantaneous) type.
Outfit Options: Customize your circuit breakers by selecting either with outfit or without outfit options to perfectly fit your specific needs and operational environments.
Outfit Details: Enhance functionality with our comprehensive range of accessories. Inner components include shunt release, under-voltage release, auxiliary contact, and alarm contact, while outer components offer turning handle and power-driven operation mechanisms, among others.
Breaking Capacity: Designed to meet varied requirements, choose from our L-standard breaking type, M-second high breaking type, and H-high breaking type for a wide range of applications.
1. Instantaneous Action Characteristics: For distribution circuit breakers, the setting value is 10In±20% and 7In±20% for the DAM2-1250 model. Motor protection circuit breakers have a setting value of 12In±20%.
2. Rated Values: For detailed rated values of our circuit breakers, please refer to Table 2.
3. Ambient Temperature: At +40ºC, the over-current release action characteristics are detailed in Table 3 for distribution circuit breakers and Table 4 for motor protection circuit breakers.
Rated Value: Explore the comprehensive specifications of our circuit breaker's rated value designed to meet your operational standards.
| 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) | ||||||
| DAM2L-63 | 3 | 10,16,20,25, 32,40,50,63 |
400 | 500 | 400×1.10 | 25 | 18 | 0 |
| DAM2M-63 | 3,4 | 50 | 35 | |||||
| DAM2L-100 | 3,4 | 16,20,25,32,40, 50,63,80,100 |
400 | 800 | 30 | 22 | ≤50 | |
| DAM2M-100 | 2,3,4 | 50 | 35 | |||||
| DAM2H-100 | 3 | 85 | 50 | |||||
| DAM2L-100 | 3,4 | 690 | 10 | 5 | ||||
| DAM2M-100 | 2,3,4 | 20 | 10 | |||||
| DAM2L-225 | 3,4 | 100,125,140, 160,180,200,225 |
400 | 800 | 35 | 25 | ||
| TXCM1-225 | 2,3,4 | 50 | 35 | |||||
| DAM2H-225 | 3 | 85 | 50 | |||||
| DAM2L-225 | 3,4 | 690 | 10 | 5 | ||||
| DAM2M-225 | 2,3,4 | 20 | 10 | |||||
| DAM2L-400 | 3 | 225,250,315, 350,400 |
400 | 800 | 50 | 35 | ≤100 | |
| DAM2M-400 | 3,4 | 65 | 42 | |||||
| DAM2H-400 | 3 | 100 | 65 | |||||
| DAM2L-400 | 3 | 690 | 15 | 8 | ||||
| DAM2M-400 | 3,4 | 20 | 10 | |||||
| DAM2L-630 | 3 | 400,500,630 | 400 | 800 | 50 | 35 | ||
| DAM2M-630 | 3,4 | 65 | 42 | |||||
| DAM2H-630 | 3 | 100 | 65 | |||||
| DAM2L-630 | 3 | 6910 | 15 | 8 | ||||
| DAM2M-630 | 3,4 | 20 | 10 | |||||
| DAM2M-800 | 3 | 630,700,800 | 400 | 800 | 75 | 50 | ||
| DAM2H-800 | 3 | 100 | 65 | |||||
| DAM2M-800 | 3 | 4690 | 30 | 15 | ||||
| DAM2-1250 | 3 | 800,1000,1250 | 400 | 800 | 85 | 42 | ||
| DAM2-1250 | 3 | 690 | 25 | 12.5 | ||||
Note: For the range of 2-pole and 4-pole circuit breakers, classified into L, M, and H types, the breaking index matches that of the M-type, ensuring uniformity and reliability.
Inverse Time Breaking Action: Examine the characteristics of over-current release for power distribution when all poles are simultaneously powered, providing superior protection.
| 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 Characteristics: Our distribution circuit breakers feature a setting value of 10In±20%, whereas motor protection circuit breakers are optimized at 12In±20%.
Inverse Time Breaking Action: Delve into the characteristics of over-current release for motor protection when all poles receive simultaneous power, ensuring robust defense.
| 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 Accessories of Circuit Breakers
1.1 Shunt Release
Shunt Release Voltage: Engineered to operate reliably with a rated control supply voltage of AC50Hz, 230V, 400V; DC110V, 220V, 24V, and efficient functionality within a 70%~110% voltage range.
DC24V Shunt Release: Ensure superior performance by adhering to the specified maximum copper wire length requirements for reliable operation.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should specifications not be met, it is advisable to design the shunt release control circuit according to the provided figure for optimal performance.
1.2 Under-Voltage Release
Under-Voltage Operation: The under-voltage release ensures dependable breaker operation when supply voltage falls to 70%-35% of the rated voltage.
Under-Voltage Protection: Provides security by preventing circuit breaker closure below 35% of rated voltage and ensuring closure above 85%.
Closing Mechanism: At supply voltages exceeding 85% of the rated value, the under-voltage release mechanism guarantees the circuit breaker's secure closure.
Under-Voltage Ratings: Rated for AC50Hz, 230V, 400V to assure consistent and reliable performance under various conditions.
400V.
Special Note: Circuit breakers fitted with under-voltage release must operate at the rated voltage, ensuring safety and accuracy in opening and closing.
normally.
1.3 Pre-Paid Meter Dedicated Release
The pre-paid meter dedicated release boasts a rated operating voltage Ue of AC230/50Hz, guaranteeing flawless performance within an impressive range of 65% to 110% of Ue. Exceptionally, when the control (Ctrl) is released, the circuit breaker gracefully initiates a delayed opening, spanning from 0.5 to 2 seconds, ensuring superior safety and unwavering reliability.
Wiring Diagram for Pre-Paid Meter Dedicated Release: Simplified and comprehensive for enhanced understanding and ease of installation.
1.4 Rated Values of Auxiliary Contacts and Alarm Contacts (See Table 5 for detailed specifications)
| 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: Engineered for seamless integration and robust performance.
b. Alarm Contact: Precision-designed for critical performance.
Alarm contacts remain inactive during standard operations of the circuit breaker. They intelligently switch between normally open and normally closed states only during free tripping or fault tripping, ensuring precise and necessary alerts.
2. External Accessories for Circuit Breakers: Enhance functionality and extend capabilities with premium accessories.
2.1 Motor Operating Mechanism: Detailed rated values and corresponding codes are available in Table 6, ensuring clarity and precision.
| 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 tripping with an electric operating mechanism, the circuit breaker requires a reset of the mechanism to be closed again, ensuring readiness for next use.
Principle Diagram for Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC): A clear and concise guide for effortless operation.
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Comprehensive visualization for smooth functionality.
2.2 Installation Dimensions for Manual Operating Mechanism (Refer to Table 10 for precise and easy setup)
Diagram of Handle Mounting Hole for DAM2-63~800: User-friendly guide for accurate installation.
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (See Table 12 for exact measurements and seamless installation)
| 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 |
Quick Selection Table for DAM2 Series Molded Case Circuit Breakers: Your guide to swift and informed decision making.
| 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 is a meticulously designed DAM2-type molded case circuit breaker. It features a frame rated current of 100A, standard breaking capacity, handle operation, 3 poles, double release, with shunt release, offering reliable motor protection with a rated current of 63A.
Ensure optimal performance by adhering to the product manual or relevant national standards for selection, installation, and usage.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. If unspecified, B-type is the default choice for streamlined operations.
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