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| 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 is expertly crafted to be a formidable solution, offering a superior rated insulation voltage of 800V. Tailored for AC distribution networks at both 50Hz and 60Hz, it efficiently manages a rated working voltage of up to 690V and a rated current capacity of up to 1250A. This makes it an optimal choice for power distribution and circuit protection, delivering comprehensive safeguarding against overloads, short-circuits, and under-voltage conditions. Its capability for infrequent circuit conversions and motor starts further underscores its remarkable versatility. Additionally, the design supports both vertical and horizontal installation, providing exceptional flexibility. Marked by the isolation symbol, the DAM2 MCCB aligns with the rigorous IEC60947-2 standards for low-voltage switchgear and control equipment, securing its place as a top-tier circuit breaker.
1. Ambient air temperature: Must consistently range between -5ºC and +40ºC, with a daily average not exceeding +35ºC, ensuring reliability.
2. Altitude: To guarantee 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 is devoid of over-current release components but functions in coordination with the other three poles, activating before deactivation.
Type C: Equipped with over-current release components, the N-pole operates in unison with the other three poles, activating prior to deactivation.
Classified by rated current of over-current release:
DAM2-63 MCCB Available in a broad spectrum of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A, catering to diverse needs with exceptional adaptability.
DAM2-100 MCCB Offered in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring flexibility and outstanding performance across various applications.
DAM2-250 MCCB Available in a formidable array of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, providing exceptional performance capabilities for demanding needs.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for varied applications and ensuring optimal compatibility.
DAM2-630 MCCB Unveil the pinnacle of electrical reliability with our cutting-edge circuit breakers, available in three powerful ratings: 400, 500, and 630 A. Each unit is a masterpiece of precision engineering designed to arm your electrical systems with unparalleled strength, ensuring superior performance that you can depend on.
DAM2-800 MCCB Step into a new era of stability with our premier 250A Fixed Type Circuit Breaker. Expertly crafted, it presents an exceptional selection across three notable ratings: 630, 700, and 800 A. Fortify your systems with rock-solid reliability and performance tailored to surpass your most rigorous demands.
DAM2-1250 MCCB: Transform your electrical framework with our exquisitely engineered circuit breakers. These models, available in ratings of 800, 1000, and 1250 A, offer astounding versatility and power, meticulously crafted to not just meet but exceed your high standards, with performance that consistently impresses.
Remark: For precision-driven applications, our 6A version is crafted exclusively in the electromagnetic (instantaneous) type. This specialized design is tailored for tasks requiring exactitude, making it unsuitable for general use and ensuring precise performance where it is most critical.
Wiring Options: Enjoy unmatched installation flexibility thanks to our versatile wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations to craft custom solutions that seamlessly fulfill your unique requirements with unparalleled ease.
Over-Current Release Patterns: Our meticulously engineered range of over-current release patterns, including thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs, are attentively crafted to meet diverse operational needs, ensuring extraordinary reliability and outstanding performance.
Outfit Options: Tailor your circuit breaker with precision through our customizable outfit options. Whether outfitted or not, these configurations provide seamless adaptation to your specific application requirements.
Outfit Details: Elevate your circuit breaker with an array of versatile accessory options. Inner enhancements include shunt release, under-voltage release, auxiliary contact, and alarm contact. Meanwhile, outer enhancements feature state-of-the-art turning handles and power-driven mechanisms for seamless integration and superior functionality.
Breaking Capacity: Unearth a comprehensive spectrum of expertly engineered breaking capacities: L-standard, M-second high, and H-high breaking types. Each meticulously crafted option caters to a variety of applications, delivering unmatched precision and unparalleled reliability.
1. Instantaneous Action Characteristics: Experience precise distribution with circuit breakers set at 10In±20%, and for the DAM2-1250 model, 7In±20%. Motor protection breakers assure steadfast defense with a setting value of 12In±20%.
2. Rated Values: For a comprehensive understanding of our circuit breakers' capabilities, refer to Table 2 for an in-depth overview of rated values, providing crucial specifications right at your fingertips.
3. Ambient Temperature: At a temperature of +40ºC, access detailed over-current release characteristics for distribution circuit breakers in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring optimal performance under varying conditions.
Rated Value: Immerse yourself in the detailed specifications of rated values for circuit breakers. Every detail is meticulously designed to provide reliable, efficient performance across a spectrum of scenarios, ensuring consistent dependability.
| 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 classified as L, M, and H types, the breaking index for each type aligns with the M-type, delivering consistent and uniform performance across all categories.
Inverse Time Breaking Action: Delve into the over-current release characteristics tailored for power distribution, ensuring unwavering protection when all poles are powered, offering continuous safeguarding you can trust.
| 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 ensure robust protection with a 12In±20% setting, securing reliable performance across diverse scenarios.
Inverse Time Breaking Action: Step into the pinnacle of cutting-edge motor protection with our meticulously designed over-current release characteristics. Crafted for excellence, these features provide steadfast safeguarding across all poles, ensuring unparalleled reliability and unwavering protection. Trust in our advanced solution to secure your operations, offering continuous reliability with every step forward.
| 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 extensive collection of precision-engineered accessories, each crafted to elevate the functionality and adaptability of our circuit breakers. These components are meticulously designed to enhance your system's performance, offering tailored solutions that meet your unique requirements with optimal efficiency.
1. Internal Accessories of Circuit Breakers: Uncover a sophisticated selection of internal enhancements designed to elevate operational excellence and allow for remarkable customization. These components ensure your systems operate at their peak potential, providing you with unmatched performance and reliability.
1.1 Shunt Release: Our shunt release integrates innovative design with precision engineering to provide superior functionality for circuit breakers. It guarantees exceptional efficiency and reliability, ensuring optimal performance in every deployment.
Shunt Release Voltage: Engineered 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 supports robust functionality across a broad 70% to 110% voltage range, ensuring seamless and reliable operation each time.
DC24V Shunt Release: To maintain unwavering reliability, adhere to specified maximum copper wire lengths, which are vital for optimal shunt release functionality. This detail-oriented approach guarantees consistent and exceptional 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 prescribed table specifications are unmet, we strongly recommend designing the shunt release control circuit as outlined. This approach ensures maximum effectiveness and operational assurance every time.
1.2 Under-Voltage Release: Experience unmatched reliability with our expertly crafted under-voltage release. It delivers consistent performance, enhancing operational safety and efficiency for your peace of mind.
Under-Voltage Operation: Enjoy unparalleled dependability with our precision-engineered under-voltage release. It guarantees solid breaker performance amidst voltage fluctuations within the 70% to 35% range of the rated level, providing reliable protection and confidence.
Under-Voltage Protection: Protect your operations with our advanced feature that prevents risky circuit breaker closures when voltage drops below 35% of the rated level. This robust protection mechanism ensures secure closures above 85%, delivering consistent safety and excellence.
Closing Mechanism: Our sophisticated under-voltage release mechanism ensures robust circuit breaker closure at supply voltages exceeding 85% of the rated value. This formidable barrier promises seamless operations and offers 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 assurance and reliability with every use.
400V.
Special Note: Meticulously engineered, our circuit breakers with under-voltage release function flawlessly at rated voltage. This ensures secure and dependable opening and closing actions, reinforcing safety in every operation.
normally.
1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release exemplifies outstanding performance across a remarkable range of 65% to 110% of Ue. 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 ingeniously crafted to maintain dormancy during routine operations. They seamlessly transition between open and closed states exclusively during unauthorized or fault tripping events, guaranteeing timely and precise notifications only when absolutely necessary.
2. External Accessories for Circuit Breakers: Discover an array of advanced external accessories, meticulously engineered to augment the functionality and versatility of your circuit breakers.
2.1 Motor Operating Mechanism: Delve into the intricate specifications, revealing comprehensive rated values and unique codes, meticulously outlined in Table 6. Experience unparalleled precision and detail in each parameter.
| 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 a circuit breaker trip initiated by the electric operating mechanism, it is imperative to reset the circuit breaker before attempting any reclosing. This critical procedure ensures consistent and secure operations, providing unmatched peace of mind with every engagement.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC) - An elaborate blueprint offering profound insights into the mechanism's complex functions.
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC) - A vital guide for mastering the operation of these formidable mechanisms, ensuring adept handling and understanding.
2.2 Installation Dimensions for the Manual Operating Mechanism (Refer to Table 10 for precise measurements) - Your ultimate reference for precise installation evaluations, ensuring flawless integration.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800 - This in-depth illustration serves as the definitive guide for accurate handle installation, ensuring optimal functionality.
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (See Table 12 for detailed information) - Ensure your installations adhere to exacting standards with these comprehensive specifications.
| 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 fast track to confidently and precisely selecting the ideal circuit breaker tailored to your specific needs.
| 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 exemplifies a DAM2-type molded case circuit breaker featuring a frame rated current of 100A, standard breaking capacity, and handle operation. It encompasses 3 poles, dual release, and shunt release, purposefully crafted for motor protection, boasting a rated current of 63A.
To achieve outstanding performance, ensure each selection, installation, and operation strictly follows the product manual or adheres to applicable national standards.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. Absent specific requisites, the default categorization is B-type, ensuring consistent reliability across applications.
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