| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is engineered as a formidable solution, offering a rated insulation voltage of 800V. Crafted for AC distribution networks operating at 50Hz/60Hz, it supports a rated working voltage of up to 690V and a rated current capacity of up to 1250A. It is perfectly suited for power distribution and circuit protection, providing comprehensive defense for equipment against overloads, short-circuits, and under-voltage. Its capability to accommodate infrequent circuit conversions and motor starts underscores its remarkable versatility. With the ability to be installed both vertically and horizontally, it offers flexible usability. Recognized by the isolation symbol " ", the DAM2 MCCB is fully compliant with IEC60947-2 standards for low-voltage switchgear and control equipment, affirming its status as a premier circuit breaker.
1. Ambient air temperature: Ensure a consistent range from -5ºC to +40ºC, with the daily average temperature not exceeding +35ºC.
2. Altitude: The installation site must be situated at an altitude of 2000 meters or lower to ensure optimal performance and reliability.
3. Atmospheric conditions: At a temperature of +40ºC, relative humidity should be kept below 50%. However, increased humidity levels are permissible at lower temperatures. The maximum average relative humidity should not exceed 90%, with the minimum average monthly temperature set at +25ºC, accounting for potential condensation from temperature fluctuations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: The N-pole lacks over-current release components, maintaining a continuous connection, and functions independently of the other three poles.
Type B: The N-pole is without over-current release components, but operates concurrently 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 comprehensive range of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A, catering to diverse needs.
DAM2-100 MCCB Offered in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring adaptability and performance.
DAM2-250 MCCB Available in a robust selection of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, providing strong 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 Available in three powerful ratings: 400, 500, and 630 A, delivering superior reliability and strength.
DAM2-800 MCCB Delve into unparalleled choices with our robust 250A Fixed Type Circuit Breaker, proudly available in three powerful ratings: 630, 700, and 800 A. Ensure your systems are fortified with the strength and reliability you demand.
DAM2-1250 MCCB: Experience unparalleled flexibility and power with our expertly crafted circuit breakers. Offering three potent ratings of 800, 1000, and 1250 A, each meticulously designed to cater to your most rigorous specifications. Choose excellence that meets and exceeds your expectations.
Remark: For niche applications, our specialized 6A version is tailored exclusively in the electromagnetic (instantaneous) type. Please be aware, its unique characteristics make it unsuitable for general use, ensuring precision in specialized requirements.
Wiring Options: Discover the ultimate installation versatility with our adaptable wiring solutions. Choose from front-of-board, back-of-board, or insertion type wiring, allowing you to tailor your installation precisely to meet your needs. Simplify customization with unmatched ease.
Over-Current Release Patterns: Our premium collection of over-current release types includes the thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each pattern is crafted with precision to address diverse operational needs, guaranteeing optimal performance across the board.
Outfit Options: Tailor your circuit breaker solution to perfection with customizable outfit options. Whether with or without an outfit, this feature empowers you to seamlessly adapt to the unique demands of your specific applications.
Outfit Details: Enhance your circuit breaker system with a versatile range of accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer enhancements feature cutting-edge turning handle and power-driven operation mechanisms, ensuring flawless integration and operation.
Breaking Capacity: Explore the 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 accommodate various applications, ensuring unmatched accuracy and reliability.
1. Instantaneous Action Characteristics: Experience refined precision with distribution circuit breakers offering a setting value of 10In±20%, while the DAM2-1250 model is set at 7In±20%. Motor protection circuit breakers deliver steadfast protection with a setting value of 12In±20%.
2. Rated Values: For an all-encompassing understanding of our circuit breakers' capabilities, consult Table 2 for a detailed overview of rated values, ensuring you have the essential specifications at your fingertips.
3. Ambient Temperature: At a temperature of +40ºC, the over-current release action characteristics for distribution circuit breakers are meticulously detailed in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring peak performance in varied conditions.
Rated Value: Immerse yourself in the intricate specifications of the circuit breaker's rated value. Each detail is engineered to deliver reliable, efficient performance across a spectrum of scenarios, ensuring steadfast 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: In 2-pole and 4-pole circuit breakers classified into L, M, and H types, rest assured that each type's breaking index is equivalent to the M-type, guaranteeing uniform and consistent performance.
Inverse Time Breaking Action: Explore the over-current release characteristics for power distribution, ensuring steadfast protection when all poles are powered concurrently. Trust in reliable 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 boast a rigorous setting value of 10In±20%, while motor protection circuit breakers offer a robust 12In±20%, delivering unwavering, reliable protection in all scenarios.
Inverse Time Breaking Action: Delve into the over-current release characteristics for motor protection, offering dependable safeguarding with comprehensive power support across all poles. Trust in the reliability of our protection.
| 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: Discover the comprehensive range of accessories designed to elevate the functionality and customization of our circuit breakers. Each accessory is carefully crafted to enhance performance and adaptability.
1. Internal Accessories of Circuit Breakers: Uncover the sophisticated range of internal enhancements available for our circuit breakers, engineered to elevate operational excellence and customization.
1.1 Shunt Release: Innovative design meets precision in our shunt release, crafted to ensure optimal circuit breaker functionality with unmatched efficiency and reliability.
Shunt Release Voltage: Our shunt release promises unparalleled efficiency with a rated control supply voltage of AC50Hz, 230V, 400V, or DC110V, 220V, 24V. It guarantees reliable functionality within a 70%~110% voltage range, ensuring seamless operation.
DC24V Shunt Release: Maintain impeccable reliability by adhering to the specified maximum copper wire length, crucial for optimal shunt release operation.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should the table specifications be unfulfilled, we recommend designing the shunt release control circuit as outlined, ensuring maximum effectiveness and operational assurance.
1.2 Under-Voltage Release: Experience unparalleled reliability with our under-voltage release, meticulously designed to deliver consistent and precise performance, enhancing operational safety and efficiency.
Under-Voltage Operation: Step into the realm of unparalleled dependability with our expertly crafted under-voltage release. Designed to maintain impeccable breaker performance amidst supply voltage fluctuations between 70% and 35% of the rated voltage, it delivers steadfast protection and peace of mind.
Under-Voltage Protection: Safeguard your operations with our cutting-edge feature, preventing risky circuit breaker closures when voltage dips below 35% of the rated threshold. This powerful protection assures secure closure above 85%, ensuring steadfast safety and unwavering performance with each operation.
Closing Mechanism: Our superior under-voltage release mechanism guarantees solid circuit breaker closure at supply voltages exceeding 85% of the rated value. This mechanism acts as a formidable shield, assuring seamless operations and providing an unmatched safety net for your systems.
Under-Voltage Ratings: Designed with ratings at AC50Hz for both 230V and 400V, our circuit breakers promise unwavering performance across a spectrum of applications, ensuring peace of mind with every use.
400V.
Special Note: With meticulous engineering, our circuit breakers equipped with under-voltage release operate flawlessly only at the rated voltage, ensuring secure and dependable opening and closing functions, reinforcing safety in every operation.
normally.
1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release delivers exceptional performance over an impressive range of 65% to 110% of Ue. The circuit breaker initiates a precisely timed opening between 0.5 and 2 seconds upon control disengagement, offering unmatched safety and reliability for your 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 designed to remain inactive during standard operations. They precisely toggle between normal open and closed states solely during free or fault tripping events, ensuring accurate and timely alerts only when absolutely necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Explore in-depth specifications, including exact rated values and specific codes, 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: Post circuit breaker tripping via an electric operating mechanism, it is crucial to reset the circuit breaker before any reclosing attempts to guarantee consistent and safe operations.
Principle Diagram for Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC)
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC)
2.2 Installation Dimensions for Manual Operating Mechanism (Refer to Table 10)
Diagram of Handle Mounting Hole for DAM2-63~800
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12)
| 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
| 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. This model boasts a frame rated current of 100A, standard breaking capacity, handle operation, 3 poles, dual release, and shunt release. Tailored for motor protection, it showcases a rated current of 63A.
To achieve unparalleled performance, rigorously ensure all selection, installation, and usage adhere to the product manual or relevant national standards.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. In the absence of specific specifications, the default designation is B-type.
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