| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker stands as a titan of power management, designed with a formidable rated insulation voltage of 800V. Ideally tailored for AC distribution networks of 50Hz/60Hz, it manages a rated working voltage soaring up to 690V and a current reaching 1250A. It masterfully orchestrates power distribution while offering robust protection to circuits and equipment against overloads, short-circuits, under-voltage, and other potential anomalies. In addition, it adeptly facilitates infrequent circuit conversions and motor initiations, presenting unmatched versatility in installation - whether positioned vertically or horizontally. Perfectly suited for isolation, marked by the symbol ' ', the DAM2 MCCB adheres to the stringent standards of IEC60947-2 for low-voltage switchgear and control equipment, Part 2: circuit breakers.
1. Ambient air temperature: Maintain a range from -5ºC to +40ºC, ensuring the average daily temperature remains within +35ºC for optimal functionality.
2. Altitude: Ensure the installation site does not exceed an elevation of 2000 meters, preserving operational efficiency.
3. Atmospheric conditions: At a maximum temperature of +40ºC, the relative humidity should remain below 50%. Increased humidity levels are permissible at lower temperatures, with a peak average relative humidity of 90% and a minimum average monthly temperature of +25ºC, considering condensation effects on the product's surface.
4. Pollution Degree: Level 3.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components, consistently connected, operates independently of the other three poles.
Type B: N-pole without over-current release components, functions in unison with the other three poles (N-pole activates prior to deactivation).
Type C: N-pole with over-current release components, synchronously operates with the other three poles (N-pole activates before deactivation).
Classified by rated current of over-current release:
DAM2-63 MCCB Available in an impressive array of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, 63 A, accommodating a wide spectrum of requirements.
DAM2-100 MCCB Available in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, 100 A, offering adaptability across applications.
DAM2-250 MCCB Available in seven diverse ratings: 100, 125, 140, 160, 180, 200, 225, 250 A, ensuring flexibility to meet various demands.
DAM2-400 MCCB Available in five robust ratings: 225, 250, 315, 350, 400 A, meticulously designed for high-performance criteria.
DAM2-630 MCCB Available in three powerful ratings: 400, 500, 630 A, tailored for those high-powered, demanding applications.
DAM2-800 MCCB Available in three powerful ratings of 630, 700, and 800 A, this product is meticulously crafted to cater to higher capacity necessities with ease and efficiency.
The DAM2-1250 MCCB stands out with its availability in three robust ratings of 800, 1000, and 1250 A, delivering unparalleled power and protection for your electrical systems.
Remark: Please be aware that the 6A version is limited to electromagnetic (instantaneous) type operation. Due to this constraint, it is not recommended. Make your choice with careful consideration to ensure optimal performance.
Wiring Options: Unleash the potential of your installation with our versatile wiring choices - front-of-board, back-of-board, or insertion type. These options promise seamless integration into diverse setups, offering unparalleled adaptability.
Over-Current Release Patterns: Our circuit breakers, available in thermodynamic-electromagnetic (dual) type and electromagnetic (instantaneous) type, are engineered for precision and reliability, catering to a wide spectrum of application needs.
Outfit Options: Tailor your circuit breaker to your specific needs by choosing from options with or without outfits, ensuring the perfect alignment with your electrical systems.
Outfit Details: Elevate your circuit breaker's capabilities with our comprehensive inner accessories, such as the shunt release, under-voltage release, auxiliary contact, and alarm contact. For outer accessories, select from turning handle operation and power-driven mechanisms, providing thorough control solutions.
Breaking Capacity: Choose from an array of breaking capacities - L-standard, M-second high, and H-high breaking types - to match the diverse needs of your applications, guaranteeing superior circuit protection.
1. Instantaneous Action Characteristics: Our distribution circuit breakers are expertly set with a 10In±20% setting value, while the DAM2-1250 model is finely tuned at 7In±20%. Motor protection circuit breakers are precisely adjusted to 12In±20%, ensuring top-tier performance and safety.
2. Rated Values: For a detailed understanding of the rated values, refer to Table 2. It contains comprehensive specifications for our circuit breakers, equipping you with the essential information for informed decision-making.
3. Ambient Temperature: At an ambient temperature of +40ºC, consult Table 3 for distribution circuit breakers and Table 4 for motor protection circuit breakers to explore detailed over-current release action characteristics, ensuring robust performance in diverse conditions.
Rated Value: Immerse yourself in the detailed specifics of our circuit breaker's rated value, offering a clear understanding of its capabilities and ensuring it meets your application requirements seamlessly.
| 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: Our 2-pole and 4-pole circuit breakers, classified into L, M, and H types, maintain a consistent breaking index aligned with the M-type, delivering reliability and uniformity across models.
Inverse Time Breaking Action: Gain insight into the intricate characteristics of over-current release for power distribution, especially when all poles are energized simultaneously, ensuring comprehensive 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 crafted with a 10In±20% setting value, while motor protection circuit breakers are fine-tuned at 12In±20%, guaranteeing effective and safe operation.
Inverse Time Breaking Action: Explore the characteristics of over-current release for motor protection when all poles are equally energized, ensuring tailored protection for your systems.
| 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: Designed for unwavering reliability, our shunt release functions under a rated control supply voltage of AC50Hz, 230V, 400V, and DC110V, 220V, 24V. It ensures dependable performance within a 70%~110% voltage range, guaranteeing flawless circuit breaker operation.
DC24V Shunt Release: For reliable operation, adhere to specified standards for maximum copper wire length. This ensures your circuit breaker's continued operational integrity and security.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: In scenarios where the specified table requirements are not fulfilled, it is crucial to meticulously design your shunt release control circuit based on the provided schematic. This ensures not only optimal functionality but also maximizes safety standards.
1.2 Under-Voltage Release
Under-Voltage Operation: Experience unparalleled safety with our under-voltage release, engineered to reliably trigger circuit breaker operations even when the supply voltage dips to a range of 70%-35% of its rated voltage. This innovative feature upholds both safety and seamless functionality.
Under-Voltage Protection: Offering exceptional protection, the under-voltage release halts circuit breaker closure if voltage plummets below 35% of its rated value. It also guarantees closure when voltage exceeds 85%, ensuring both safety and dependable operational reliability.
Closing Mechanism: The under-voltage release is designed to enhance system safety, facilitating secure circuit breaker closure at supply voltages exceeding 85% of the rated value.
Under-Voltage Ratings: Our devices, rated at AC50Hz with voltages of 230V and 400V, are crafted to deliver consistent performance, meeting the pinnacle of reliability and safety standards.
400V.
Special Note: With an under-voltage release, circuit breakers are expertly crafted to perform optimally at the rated voltage, ensuring secure and reliable opening and closing cycles that enhance safety.
normally.
1.3 Pre-Paid Meter Dedicated Release
Our cutting-edge pre-paid meter dedicated release, with a remarkable rated operating voltage Ue of AC230/50Hz, offers exceptional performance within a versatile range from 65% to 110% of Ue. Ingeniously, when the control (Ctrl) is disengaged, it initiates a delayed opening from 0.5 to 2 seconds, ensuring elevated safety and reliability, thus offering peace of mind.
Wiring Diagram for Pre-Paid Meter Dedicated Release: Your essential guide to achieving seamless 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: An indispensable component for boosting operational efficiency.
b. Alarm Contact: Expertly crafted for accurate and dependable notifications.
Engineered with precision, our alarm contacts are designed to remain inactive during standard operations, only transitioning between normal open and closed states during free or fault tripping. This guarantees that alerts are precisely triggered only when absolutely necessary.
2. External Accessories for Circuit Breakers: These enhance functionality and boost performance.
2.1 Motor Operating Mechanism: Delve into the rated values and corresponding codes in Table 6 for a detailed understanding and insights.
| 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 a circuit breaker trip with an electric operating mechanism, a reset is required to ensure the system is ready for re-engagement and operational readiness is maintained.
Principle Diagram for the Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC): A visual guide to understanding the process for achieving optimal operation.
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Offers a clear perspective on managing high-capacity operations effectively.
2.2 Installation Dimensions for Manual Operating Mechanism: Consult Table 10 to ensure precision fit and flawless functionality.
Diagram of Handle Mounting Hole for DAM2-63~800: Your precise guide to achieving perfect installation.
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12): Ensure precise integration with your systems for seamless functionality.
| 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 selection process for achieving perfect results.
| 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 specifies a DAM2-type molded case circuit breaker with a frame rated current of 100A. It offers a standard breaking capacity, handle operation, 3 poles, double release, and shunt release. Expertly engineered for motor protection, it boasts a rated current of 63A.
For optimal performance and long-lasting reliability, it is crucial that selection, installation, and usage strictly follow the comprehensive guidelines outlined in the product manual or adhere to the applicable national standards.
Important Note: The N-pole configuration of a 4P circuit breaker is available in two types, A-type and B-type. In the absence of a specific request, B-type is provided as the standard default, ensuring versatility and convenience.
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