| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is masterfully engineered to be a powerful solution, offering a rated insulation voltage of 800V. Specifically designed for AC distribution networks operating at 50Hz and 60Hz, it adeptly manages a rated working voltage up to 690V and a rated current capacity up to 1250A. This makes it an ideal choice for power distribution and circuit protection, providing comprehensive safeguarding against overloads, short-circuits, and under-voltage situations. Its capability for infrequent circuit conversions and motor starts further highlights its impressive versatility. Additionally, the design supports both vertical and horizontal installation, offering exceptional flexibility. Bearing the isolation symbol, the DAM2 MCCB adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, affirming its status as a superior circuit breaker.
1. Ambient air temperature: Must consistently range between -5ºC and +40ºC, with a daily average not exceeding +35ºC.
2. Altitude: To ensure optimal performance and reliability, installations should be at altitudes of 2000 meters or below.
3. Atmospheric conditions: At +40ºC, relative humidity should be under 50%. Higher humidity levels are permissible at reduced temperatures, with a maximum average relative humidity not exceeding 90% and a minimum average monthly temperature of +25ºC, considering potential condensation due to temperature changes.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: The N-pole lacks over-current release components, is continuously connected, and operates independently of the other three poles.
Type B: The N-pole lacks over-current release components but works in coordination with the other three poles, activating before deactivation.
Type C: Enriched with over-current release components, the N-pole operates in harmony with the other three poles, activating prior to deactivation.
Classified by rated current of over-current release:
DAM2-63 MCCB Available in a comprehensive spectrum of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A, catering to diverse requirements.
DAM2-100 MCCB Offered in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring adaptability and outstanding performance.
DAM2-250 MCCB Available in a robust array of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, providing exceptional performance capabilities.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for varied applications.
DAM2-630 MCCB Unveil the pinnacle of dependability with our top-tier circuit breakers, each unit a masterclass in precision engineering and available in an array of potent ratings: 400, 500, and 630 A. Equip your electrical systems with unparalleled strength and performance, ensuring they operate with unmatched reliability and efficiency.
DAM2-800 MCCB Discover our exceptional 250A Fixed Type Circuit Breaker, thoughtfully crafted to present you with unrivaled selection through three prestigious ratings: 630, 700, and 800 A. Fortify your systems with steadfast reliability and power that effortlessly satisfies your most rigorous demands.
DAM2-1250 MCCB: Transform your electrical infrastructure with our intricately engineered circuit breakers, offering tremendous flexibility and prowess. Boasting ratings of 800, 1000, and 1250 A, each model is meticulously crafted to surpass your stringent expectations, delivering performance that consistently exceeds benchmarks.
Remark: For precision-centric applications, our specialized 6A version is designed in the electromagnetic (instantaneous) type. Its distinct features are optimized for precise tasks, rendering it unsuitable for general uses while ensuring exactitude where it is paramount.
Wiring Options: Experience unprecedented ease in installation with our adaptable wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations, providing tailored solutions that flawlessly accommodate your precise requirements.
Over-Current Release Patterns: Our extensive selection of over-current release patterns, featuring thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs, is crafted with unparalleled attention to detail to cater to diverse operational needs, guaranteeing superior reliability and performance.
Outfit Options: Tailor your circuit breaker to perfection with our versatile outfit options. Whether equipped or not, these choices ensure seamless adaptability to your specific application requirements.
Outfit Details: Enhance your circuit breaker with an array of versatile accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer enhancements feature advanced turning handles and power-driven mechanisms for seamless integration and functionality.
Breaking Capacity: Explore a comprehensive range of breaking capacities with our precisely engineered selections: L-standard, M-second high, and H-high breaking types. Each option is crafted meticulously to serve diverse applications, ensuring unmatched precision and dependability.
1. Instantaneous Action Characteristics: Benefit from precise distribution with circuit breakers calibrated at 10In±20%, and for the DAM2-1250 model, 7In±20%. Motor protection breakers assure robust defense with a setting value of 12In±20%.
2. Rated Values: For an exhaustive understanding of our circuit breakers' capabilities, refer to Table 2 for comprehensive insights into rated values, providing key specifications readily at your disposal.
3. Ambient Temperature: At an ambient temperature of +40ºC, detailed over-current release characteristics for distribution circuit breakers are provided in Table 3. For motor protection circuit breakers, see Table 4, ensuring peak performance across varying conditions.
Rated Value: Delve into the detailed specifications of rated values for circuit breakers, each element meticulously crafted to ensure consistent, efficient performance across various applications, promoting unwavering 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 2-pole and 4-pole circuit breakers categorized as L, M, and H types, the breaking index for each category aligns with the M-type, ensuring consistent and uniform performance across all classifications.
Inverse Time Breaking Action: Review the over-current release characteristics specifically designed for power distribution, providing steadfast protection when all poles are activated, assuring unwavering defense.
| 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: Distribution circuit breakers deliver precise setting values of 10In±20%, while motor protection circuit breakers provide robust protection with a 12In±20% setting, ensuring reliable performance in varied scenarios.
Inverse Time Breaking Action: Step into the next era of advanced motor protection technology with our meticulously engineered over-current release characteristics. These cutting-edge features deliver steadfast protection across all poles, ensuring unrivaled reliability and unwavering safety. Trust our solution to keep your operations secure, offering consistent and dependable reliability at every stage.
| 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 comprehensive collection of accessories, each masterfully designed to enhance the functionality and adaptability of our circuit breakers. Our precision-engineered accessories are tailored to elevate your system's performance, offering custom solutions that cater to your unique requirements and maximize versatility.
1. Internal Accessories of Circuit Breakers: Discover a sophisticated selection of internal enhancements for our circuit breakers, thoughtfully crafted to boost operational excellence. These enhancements allow for unprecedented customization to ensure your systems operate at their peak potential, delivering superior performance.
1.1 Shunt Release: Our shunt release is a seamless blend of innovative design and precision engineering. It is crafted to provide unparalleled functionality for circuit breakers, ensuring optimal efficiency and unmatched reliability in every application.
Shunt Release Voltage: Optimized for unmatched efficiency, our shunt release operates with a rated control supply voltage of AC50Hz at 230V and 400V, or DC at 110V, 220V, and 24V. It promises robust functionality across an extensive 70% to 110% voltage range, ensuring seamless and reliable performance every time.
DC24V Shunt Release: To ensure unwavering reliability, adhering to the specified maximum copper wire lengths is vital for the optimal functioning of the shunt release. This meticulous attention to detail guarantees consistent and reliable performance.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: If the recommended table specifications are not met, we strongly advocate designing the shunt release control circuit as detailed. This ensures peak effectiveness and operational assurance, ensuring optimal performance every single time.
1.2 Under-Voltage Release: Experience the pinnacle of reliability with our expertly crafted under-voltage release. It delivers unwavering performance, enhancing operational safety and efficiency to ensure your peace of mind.
Under-Voltage Operation: Embrace exceptional dependability with our precisely engineered under-voltage release. It guarantees steadfast breaker performance amidst voltage fluctuations within the 70% to 35% range of the rated level, offering solid protection and peace of mind.
Under-Voltage Protection: Protect your operations with our state-of-the-art feature that prevents unsafe circuit breaker closures when voltage dips below 35% of the rated level. This robust protection mechanism ensures secure closures above 85%, delivering consistent safety and excellence with every operation.
Closing Mechanism: Our advanced under-voltage release mechanism guarantees robust circuit breaker closure at supply voltages exceeding 85% of the rated value. It acts as a formidable barrier, ensuring seamless operations and providing a superior safety net for your systems.
Under-Voltage Ratings: Rated at AC50Hz for both 230V and 400V, our circuit breakers deliver steadfast performance across diverse applications, providing reassurance and reliability with every use.
400V.
Special Note: Built with meticulous engineering, our circuit breakers equipped with under-voltage release function seamlessly at the rated voltage, ensuring secure and dependable opening and closing actions, thus reinforcing safety in every operation.
normally.
1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release showcases outstanding performance across an impressive 65% to 110% of Ue range. The circuit breaker executes a perfectly timed opening between 0.5 and 2 seconds upon control disengagement, ensuring unparalleled safety, reliability, and peace of mind.
Wiring Diagram for Pre-Paid Meter Dedicated Release
1.4 Rated Values of Auxiliary Contacts and Alarm Contacts (Refer to 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
Our alarm contacts are meticulously crafted to ensure they remain dormant during normal operations, only activating during free or fault tripping events. This precision engineering guarantees timely and accurate alerts, delivering critical information when it's most needed, thus ensuring the highest level of operational reliability.
2. External Accessories for Circuit Breakers - Discover the comprehensive range of external accessories designed to enhance the functionality and adaptability of your circuit breakers. Explore innovative solutions tailored to elevate your electrical systems.
2.1 Motor Operating Mechanism: Dive into the detailed specifications, revealing the thorough rated values and distinctive codes. Our comprehensive overview in Table 6 equips you with all the necessary information to make informed decisions, ensuring optimal performance.
| 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: Post-circuit breaker trip due to the electric operating mechanism, resetting the circuit breaker before any reclosing attempt is imperative. This critical procedure ensures consistent and secure operations, providing unmatched peace of mind and confidence with each and every use.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC) - A detailed blueprint offering profound insights into the complex functions of these mechanisms, epitomizing clarity and understanding for seamless operations.
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC) - Your indispensable guide to mastering the robust operation of these mechanisms, ensuring you harness their full potential.
2.2 Installation Dimensions for the Manual Operating Mechanism (Refer to Table 10 for precise measurements) - Your definitive resource for precise installation, ensuring every setup is carried out with exactitude and meets the highest standards of accuracy.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800 - This comprehensive depiction serves as the ultimate guide for correct handle installation, ensuring optimal functionality and ease of use.
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (See Table 12 for detailed information) - Unwavering accuracy in installations, guaranteeing that your systems meet precise specifications and perform optimally.
| 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 Guide for DAM2 Series Molded Case Circuit Breakers - Your essential pathway to selecting the perfect circuit breaker with confidence and precision, ensuring your electrical systems are robust and reliable.
| 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: The DAM2L-100 / 33102 63A features a DAM2-type molded case circuit breaker. With a frame rated current of 100A, standard breaking capacity, and handle operation across 3 poles, it includes dual and shunt releases, specifically engineered for motor protection with a rated current of 63A.
To unlock remarkable performance, meticulously adhere to every selection, installation, and operation by the product manual or comply with relevant national standards, ensuring exceptional results and enduring reliability.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. In the absence of specific requirements, the default classification is B-type, ensuring standard reliability and performance.
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