| Customization: | Available |
|---|---|
| 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 rated insulation voltage of 800V. Tailored for AC distribution networks at both 50Hz and 60Hz, it efficiently manages a rated working voltage up to 690V and a rated current capacity 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 ability 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 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.
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 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.
DAM2-100 MCCB Offered in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring flexibility and outstanding performance.
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.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for varied applications.
DAM2-630 MCCB Discover the epitome of reliability with our circuit breakers, available in three formidable ratings of 400, 500, and 630 A. Each unit is engineered with precision craftsmanship, ensuring your electrical systems are equipped with unmatched strength and performance.
DAM2-800 MCCB Explore our superior 250A Fixed Type Circuit Breaker, artfully designed to offer unparalleled choices in three distinguished ratings: 630, 700, and 800 A. Reinforce your systems with unwavering reliability and strength that consistently meet your highest demands.
DAM2-1250 MCCB: Revolutionize your electrical setup with our meticulously designed circuit breakers, providing immense versatility and power. With ratings of 800, 1000, and 1250 A, each model is engineered to exceed your exacting standards, delivering performance that surpasses expectations.
Remark: For applications requiring specialized precision, our 6A version is crafted in the electromagnetic (instantaneous) type. Its unique features are tailored for precision tasks, making it unsuitable for general usage and ensuring accuracy where it matters most.
Wiring Options: Experience unparalleled installation flexibility with our versatile wiring solutions. Opt for front-of-board, back-of-board, or insertion type configurations, allowing custom solutions that seamlessly fit your specific requirements with ease.
Over-Current Release Patterns: Our diverse range of over-current release patterns, including thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs, are crafted with meticulous attention to detail to meet a variety of operational needs, ensuring exceptional reliability and performance.
Outfit Options: Customize your circuit breaker to perfection with our adaptable outfit options. Whether outfitted or not, these options provide seamless adaptability to your unique application needs.
Outfit Details: Amplify your circuit breaker with a selection of versatile accessories. Inner options feature shunt release, under-voltage release, auxiliary contact, and alarm contact, while our outer enhancements include advanced turning handles and power-driven mechanisms for impeccable integration and functionality.
Breaking Capacity: Discover a full spectrum of breaking capacities with our expertly engineered options: L-standard, M-second high, and H-high breaking types. Each is crafted with precision to cater to diverse applications, ensuring unmatched accuracy and reliability.
1. Instantaneous Action Characteristics: Enjoy precise distribution with circuit breakers set at 10In±20%, and for the DAM2-1250 model, 7In±20%. Motor protection breakers guarantee steadfast defense with a setting value of 12In±20%.
2. Rated Values: For comprehensive insights into our circuit breakers' capabilities, consult Table 2 for a detailed overview of rated values, offering essential specifications at your fingertips.
3. Ambient Temperature: At a temperature of +40ºC, find the 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 various conditions.
Rated Value: Immerse yourself in the intricate specifications of rated values for circuit breakers, each detail fashioned to deliver dependable, efficient performance across diverse scenarios, ensuring consistent 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 classified as L, M, and H types, the breaking index for each type matches that of the M-type, providing consistent and uniform performance across all categories.
Inverse Time Breaking Action: Examine the over-current release characteristics designed for power distribution, ensuring steadfast protection when all poles are powered, offering unwavering safeguarding throughout.
| 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 provide exact setting values of 10In±20%, while motor protection circuit breakers deliver robust protection with a 12In±20% setting, ensuring reliable performance across various scenarios.
Inverse Time Breaking Action: Embark on a journey into the forefront of advanced motor protection technology with our over-current release characteristics. These are meticulously crafted to provide steadfast safeguarding across all poles, ensuring an unparalleled level of reliability and unwavering protection. Trust in our solution to keep your operations secure, offering steadfast reliability every step of the way.
| 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: Dive into our vast array of accessories, each one crafted to enhance the functionality and versatility of our circuit breakers. Carefully precision-engineered, our accessories are designed to elevate your system's performance and adaptability, providing you with a tailored solution that caters to your specific requirements.
1. Internal Accessories of Circuit Breakers: Discover a refined selection of internal enhancements for our circuit breakers. These are thoughtfully designed to boost operational excellence and allow for unprecedented customization, ensuring that your systems operate at their peak potential.
1.1 Shunt Release: Our shunt release seamlessly combines innovative design with precision engineering. It is crafted to provide optimal functionality for circuit breakers, guaranteeing superior efficiency and unmatched reliability in every deployment.
Shunt Release Voltage: Our shunt release is designed for unmatched efficiency, operating with a rated control supply voltage of AC50Hz at 230V and 400V, or DC at 110V, 220V, and 24V. It ensures robust functionality over an extensive 70% to 110% voltage range, promising seamless and reliable operations each time.
DC24V Shunt Release: To ensure unwavering reliability, it is crucial to adhere to specified maximum copper wire lengths, which are vital for the optimal functioning of the shunt release. This attention to detail ensures consistent performance.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should the prescribed table specifications be unmet, we strongly advocate designing the shunt release control circuit as detailed. This ensures peak effectiveness and operational assurance, every single time.
1.2 Under-Voltage Release: Experience the epitome of reliability with our under-voltage release, expertly crafted to deliver unyielding performance. It consistently boosts operational safety and efficiency, ensuring your peace of mind.
Under-Voltage Operation: Embrace unparalleled dependability with our precisely engineered under-voltage release. It assures steadfast breaker performance amidst voltage fluctuations within the 70% to 35% range of the rated level, providing solid protection and peace of mind.
Under-Voltage Protection: Safeguard your operations with our cutting-edge feature that prevents risky circuit breaker closures when voltage dips below 35% of the rated level. This formidable protection mechanism guarantees secure closures above 85%, delivering consistent safety and excellence with every operation.
Closing Mechanism: Our sophisticated under-voltage release mechanism ensures robust circuit breaker closure at supply voltages beyond 85% of the rated value. It acts as a formidable barrier, promising seamless operations and offering 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 a variety of applications, providing reassurance and reliability with every use.
400V.
Special Note: With meticulous engineering, our circuit breakers equipped with under-voltage release function flawlessly at the rated voltage, ensuring secure and dependable opening and closing actions, thereby 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 an impressive 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 and reliability, providing 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 astutely designed to remain inactive during standard operations. They switch precisely between open and closed states only during free or fault tripping events, ensuring timely and accurate alerts when truly necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Immerse yourself in the precise specifications, uncovering in-depth rated values and distinctive codes, all comprehensively detailed 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: After a circuit breaker trip triggered by the electric operating mechanism, it is absolutely crucial to reset the circuit breaker prior to any reclosing attempts. This essential step guarantees consistent and secure operations, offering unparalleled peace of mind with every use.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC) - A comprehensive blueprint for understanding the mechanism's intricate functions.
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC) - An essential guide for mastering the operation of these robust mechanisms.
2.2 Installation Dimensions for the Manual Operating Mechanism (Refer to Table 10 for precise measurements) - Your definitive source for accurate installation assessments.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800 - This detailed depiction serves as the ultimate guide for proper handle installation.
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (See Table 12 for detailed information) - Ensures your installations meet exact standards.
| 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 shortcut to choosing the right circuit breaker with confidence and precision.
| 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 illustrates a DAM2-type molded case circuit breaker, with a frame rated current of 100A, standard breaking capacity, and handle operation. It boasts 3 poles, dual release, and shunt release, specifically designed for motor protection, with a rated current of 63A.
To achieve remarkable performance, ensure every selection, installation, and operation meticulously follows the product manual or complies with pertinent national standards.
Note: The N-pole type of a 4P circuit breaker is classified into A-type and B-type. Without specific requirements, the default classification is B-type, ensuring standard reliability.
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