| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is a formidable powerhouse, featuring a rated insulation voltage of 800V. Tailored for AC distribution networks operating at 50Hz/60Hz, it adeptly manages a rated working voltage of up to 690V and a current capacity reaching 1250A. This exceptional device excels in power distribution while proficiently protecting circuits and equipment from overloads, short-circuits, under-voltage, and other potential hazards. It also facilitates occasional circuit conversions and motor starts, offering unmatched versatility in installation-either vertically or horizontally. Capable of serving as an isolator, denoted by the symbol ' ', the DAM2 MCCB proudly adheres to the stringent standards of IEC60947-2 for low-voltage switchgear and control equipment, Part 2: circuit breakers.
1. Ambient Air Temperature: Ensure ambient air temperature remains between -5ºC and +40ºC, with an average daily temperature not exceeding +35ºC.
2. Altitude: The installation site should not exceed an altitude of 2000 meters.
3. Atmospheric Conditions: At a peak temperature of +40ºC, the relative humidity should not surpass 50%. Higher humidity is permissible at lower temperatures, with a maximum monthly average relative humidity of 90% at a minimum average temperature of +25ºC, considering the impact of temperature-induced condensation on the product's surface.
4. Pollution Degree: Level 3.
Selection of Instructions
Classified by Pole Types:
Type A: N-pole lacks over-current release components, continuously connected, and operates independently from the other three poles.
Type B: N-pole without over-current release components, functions alongside the other three poles (N-pole activates before deactivation).
Type C: N-pole with over-current release components, operates in tandem with the other three poles (N-pole activates prior to deactivation).
Classified by Rated Current of Over-Current Release:
DAM2-63 MCCB Available in an array of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, 63 A, precisely catering to a wide spectrum of requirements.
DAM2-100 MCCB Available in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, 100 A, offering an adaptable solution for diverse applications.
DAM2-250 MCCB Available in seven ratings: 100, 125, 140, 160, 180, 200, 225, 250 A, ensuring comprehensive flexibility for varied needs.
DAM2-400 MCCB Available in five ratings: 225, 250, 315, 350, 400 A, meticulously designed to meet high-performance standards.
DAM2-630 MCCB Available in three robust ratings: 400, 500, 630 A, crafted for those powerful, demanding applications.
DAM2-800 MCCB Available in three robust ratings of 630, 700, and 800 A, our Cdada 250A Fixed Type Moulded Case Circuit Breaker Low Voltage is expertly tailored for your higher capacity needs, ensuring superior performance and reliability.
Discover the DAM2-1250 MCCB, available in three significant ratings: 800, 1000, and 1250 A, engineered for ultimate power and unparalleled protection. Elevate your electrical systems with confidence and durability.
Remark: It is important to note that our 6A version is limited to electromagnetic (instantaneous) type operation. Due to its specification constraints, we do not recommend it for critical applications. Choose wisely to guarantee optimal performance and safety.
Wiring Options: Customize your installation with our extensive selection of wiring choices, including front-of-board, back-of-board, or insertion type. These flexible options ensure seamless and efficient integration into a variety of setups, enhancing your system's adaptability.
Over-Current Release Patterns: Our circuit breakers are meticulously designed in both thermodynamic-electromagnetic (dual) type and electromagnetic (instantaneous) type. They meet diverse application requirements with unparalleled precision and reliability, ensuring peak performance across all scenarios.
Outfit Options: Personalize your circuit breaker to perfectly match your specific requirements by choosing between versions with or without outfit options. This customization ensures the best fit for your unique electrical systems and enhances overall functionality.
Outfit Details: Amplify your circuit breaker's capabilities with our comprehensive range of inner accessories, such as the shunt release, under-voltage release, auxiliary contact, and alarm contact. Opt for outer accessories like turning handle and power-driven operation mechanisms to achieve full control and support.
Breaking Capacity: Choose from our extensive capacity offerings, including L-standard breaking, M-second high breaking, and H-high breaking types. Tailor your selection to perfectly align with the diverse demands of your applications, ensuring exceptional circuit protection at every turn.
1. Instantaneous Action Characteristics: Our distribution circuit breakers feature a precise setting value of 10In±20%. The advanced DAM2-1250 model is meticulously configured at 7In±20%, while motor protection circuit breakers are rigorously set to 12In±20%, guaranteeing optimal performance and safety.
2. Rated Values: For a comprehensive understanding of our circuit breaker's rated values, refer to Table 2. You will find detailed specifications that empower you with the knowledge needed for informed decision-making and enhanced system performance.
3. Ambient Temperature: At an ambient temperature of +40ºC, explore the intricate over-current release action characteristics detailed in Table 3 for distribution circuit breakers and Table 4 for motor protection circuit breakers. This ensures robust performance across diverse conditions.
Rated Value: Uncover the intricate specifics of our circuit breaker's rated value, offering a clear picture of its capabilities. This thorough understanding ensures that it aligns perfectly with your application needs, maximizing performance and reliability.
| 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 our 2-pole and 4-pole circuit breakers categorized into L, M, and H types, you can be confident that the breaking index for all models aligns with the M-type. This consistency ensures reliability and uniformity across our product range.
Inverse Time Breaking Action: Gain a deep understanding of the nuanced over-current release characteristics for power distribution, particularly when all poles are simultaneously energized, providing comprehensive and reliable 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 are expertly engineered with a setting value of 10In±20%, while motor protection circuit breakers are rigorously set at 12In±20%. This design ensures effective and safe operation, consistently delivering on performance.
Inverse Time Breaking Action: Investigate the intricate characteristics of over-current release for motor protection when all poles are equally energized. This ensures that every aspect of your systems is meticulously protected and tailored for safety.
| 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: Explore our range of sophisticated accessories designed to enhance and expand the functionality of your circuit breaker systems, offering comprehensive solutions for your electrical needs.
1. Internal Accessories of Circuit Breakers: Discover the internal accessories available for our circuit breakers, crafted to enhance performance and reliability.
1.1 Shunt Release: Explore the exceptional reliability of our shunt release, designed to operate under a rated control supply voltage for seamless integration into your systems.
Shunt Release Voltage: Experience unparalleled reliability with our shunt release, engineered to perform flawlessly under a rated control supply voltage of AC50Hz, 230V, 400V, and DC110V, 220V, 24V. With dependable performance within a 70%~110% voltage range, your circuit breaker will function seamlessly.
DC24V Shunt Release: To ensure consistent and reliable operation, adhere to specified standards for the maximum length of copper wire. This guarantees that your circuit breaker remains operational and secure, providing peace of mind.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: To ensure the utmost in functionality and safety, if the specified table requirements are not fully satisfied, it is crucial to design your shunt release control circuit in accordance with the provided figure. This will guarantee optimal performance and seamless safety integration.
1.2 Under-Voltage Release
Under-Voltage Operation: Experience unwavering reliability with our under-voltage release, engineered to ensure consistent circuit breaker performance. It adeptly operates when supply voltage dips between 70% to 35% of the rated voltage, upholding both safety and operational efficacy.
Under-Voltage Protection: This innovative system provides robust under-voltage protection by preventing the circuit breaker from closing if voltage levels drop below 35% of the rated value. Once voltage surpasses 85%, it enables closure, delivering assured safety and operational dependability.
Closing Mechanism: For enhanced safety, our under-voltage release ensures the circuit breaker closes securely when supply voltages exceed 85% of the rated value, thus optimizing system security.
Under-Voltage Ratings: Our devices boast ratings of AC50Hz, 230V, 400V, guaranteeing consistent performance that meets the pinnacle of safety and reliability standards.
400V.
Special Note: Our circuit breakers, equipped with sophisticated under-voltage releases, are meticulously designed to perform optimally at the specified rated voltage, ensuring safe and effective opening and closing cycles.
normally.
1.3 Pre-Paid Meter Dedicated Release
Our advanced pre-paid meter dedicated release is a marvel of modern engineering, with a rated operating voltage Ue of AC230/50Hz. It delivers exceptional performance across a versatile spectrum of 65% to 110% of Ue. Ingeniously, when the control (Ctrl) is disengaged, the circuit breaker executes a delayed opening, ranging from 0.5 to 2 seconds. This guarantees maximum safety and reliability, allowing you the ultimate peace of mind.
Wiring Diagram for Pre-Paid Meter Dedicated Release: Your comprehensive guide to achieving seamless and efficient connectivity.
1.4 Rated Values of Auxiliary Contacts and Alarm Contacts (Refer to Table 5 for comprehensive details)
| 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: Designed to boost operational efficiency to new heights.
b. Alarm Contact: Engineered with precision for dependable notifications.
Our expertly crafted alarm contacts are designed to stay inactive during regular operations, shifting between normal open and closed states solely during free or fault tripping. This ensures that precise alerts are activated only when genuinely necessary, enhancing reliability.
2. External Accessories for Circuit Breakers: Elevate functionality and performance to superior levels.
2.1 Motor Operating Mechanism: Discover detailed insights by exploring rated values and their corresponding codes 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: Following a circuit breaker trip using an electric operating mechanism, a reset is required before re-engagement can occur, ensuring the system is operationally ready.
Principle Diagram for the Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC): Visualize the complete process for an enhanced understanding of operations.
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Gain a clear perspective on high-capacity operations.
2.2 Installation Dimensions for Manual Operating Mechanism: Refer to Table 10 to ensure precision installation dimensions that fit perfectly and function seamlessly.
Diagram of Handle Mounting Hole for DAM2-63~800: Your guide to ensuring precise and correct installation.
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12): Ensure an accurate and flawless integration within your systems.
| 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: Streamline your decision-making for perfect selection.
| 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 defines a DAM2-type molded case circuit breaker featuring a frame rated current of 100A. It provides standard breaking capacity, handle operation, 3 poles, double release, and shunt release, expertly crafted for motor protection with a rated current of 63A.
For optimal performance, it is imperative to adhere strictly to the guidelines detailed in our product manual or comply with relevant national standards during the selection, installation, and usage of our products.
Important Notice: In a 4P circuit breaker, the N-pole type can be classified into A-type and B-type. Please note that if no specification is provided, the B-type will be used as the default option.
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