| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker stands as a powerhouse solution, boasting a rated insulation voltage of 800V. Designed for AC distribution networks at 50Hz/60Hz, it supports a rated working voltage of up to 690V with a current capacity reaching up to 1250A. It excels in power distribution and circuit protection, offering a comprehensive shield against overloads, short-circuits, and under-voltage. Its versatility is further demonstrated by its suitability for infrequent circuit conversions and motor starts, as well as flexibility in both vertical and horizontal installations. Distinguished by the isolation symbol "", the DAM2 MCCB adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, solidifying its position as a leading circuit breaker.
1. Ambient air temperature: Maintain a consistent range from -5ºC to +40ºC, ensuring the daily average does not exceed +35ºC for optimal operation.
2. Altitude: Install at a site not exceeding 2000 meters in altitude to guarantee optimal performance and reliability.
3. Atmospheric conditions: At +40ºC, keep relative humidity under 50%. Higher humidity is acceptable at lower temperatures, with a maximum average relative humidity of 90%. Ensure the minimum average monthly temperature remains at +25ºC to accommodate condensation from temperature swings.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: The N-pole remains uninterrupted with no over-current release components, functioning independently of the other three poles.
Type B: The N-pole, lacking over-current release components, operates in unison with the other three poles, activating before they disengage.
Type C: Featuring over-current release components, the N-pole operates synchronously with the other poles, initiating before their deactivation.
Classified by rated current of over-current release:
DAM2-63 MCCB This series is offered in a broad spectrum of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A, catering to a wide range of demands.
DAM2-100 MCCB Available in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring versatility and superior performance.
DAM2-250 MCCB Featuring a robust selection of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, engineered for powerful performance capabilities.
DAM2-400 MCCB Available in five carefully curated ratings: 225, 250, 315, 350, and 400 A, offering customized solutions for various needs.
DAM2-630 MCCB Unleash unparalleled performance with our circuit breakers, available in three robust ratings: 400, 500, and 630 A. Designed to deliver exceptional reliability and strength, our breakers are the epitome of superior engineering.
DAM2-800 MCCB Explore unparalleled options with our formidable 250A Fixed Type Circuit Breaker. Offered in three dynamic ratings-630, 700, and 800 A-these breakers are engineered to provide the unwavering strength and reliability your systems need.
DAM2-1250 MCCB: Unlock unmatched flexibility and power through our exquisitely designed circuit breakers. Available in three potent ratings of 800, 1000, and 1250 A, each breaker is meticulously crafted to satisfy your most demanding specifications. Choose this excellence to meet and surpass your expectations.
Remark: For specialized applications, our unique 6A version is precisely crafted in the electromagnetic (instantaneous) type. Its distinct characteristics make it ideal for niche uses, ensuring precision for specialized requirements, but not for general use.
Wiring Options: Experience ultimate installation flexibility with our versatile wiring solutions. Choose from front-of-board, back-of-board, or insertion type wiring, allowing for precise customization to meet your installation needs effortlessly.
Over-Current Release Patterns: Our exceptional selection of over-current release types features the thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each pattern is precision-crafted to address varied operational needs, ensuring peak performance.
Outfit Options: Perfect your circuit breaker solution with a host of customizable outfit options. Whether with or without an outfit, this feature empowers you to effortlessly tailor your breaker to meet the unique demands of your applications.
Outfit Details: Elevate your circuit breaker system with a comprehensive array of accessories. Inner options include shunt release, under-voltage release, auxiliary contacts, and alarm contacts. Our advanced outer enhancements integrate a state-of-the-art turning handle and power-driven operation mechanisms, promising seamless integration and flawless function.
Breaking Capacity: Discover the extensive range of breaking capacities with our meticulously engineered choices: L-standard, M-second high, and H-high breaking types. Each is masterfully crafted to suit diverse applications, offering unparalleled precision and reliability.
1. Instantaneous Action Characteristics: Discover refined precision with distribution circuit breakers featuring a precise setting value of 10In±20%, and the DAM2-1250 model set at 7In±20%. Motor protection circuit breakers enhance security with a steadfast setting value of 12In±20%.
2. Rated Values: For a comprehensive understanding of our circuit breakers' capabilities, consult Table 2 for an in-depth overview of rated values, equipping you with essential specifications at your disposal.
3. Ambient Temperature: At +40ºC, the detailed characteristics of the over-current release action for distribution circuit breakers are outlined in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring optimized performance under varied conditions.
Rated Value: Engage with the intricate specifications of the circuit breaker's rated value. Each aspect is engineered to provide reliable, efficient performance across a diverse range of scenarios, assuring steadfast 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: In 2-pole and 4-pole circuit breakers classified as L, M, and H types, rest assured that the breaking index for each type is equivalent to the M-type, ensuring consistent and uniform performance.
Inverse Time Breaking Action: Delve into the over-current release characteristics for power distribution, assuring steadfast protection when all poles are simultaneously powered, offering trustworthy safeguarding.
| 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 feature a precise setting value of 10In±20%, while motor protection circuit breakers offer a robust 12In±20%, ensuring dependable and unwavering protection across all scenarios.
Inverse Time Breaking Action: Explore the superior over-current release characteristics, designed meticulously for motor protection. This feature ensures reliable safeguarding with comprehensive power support across all poles, offering steadfast reliability that you can trust.
| 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: Immerse yourself in our extensive array of accessories, crafted to significantly enhance the functionality and customization of our circuit breakers. Each piece is expertly designed to elevate performance and adaptability to new heights.
1. Internal Accessories of Circuit Breakers: Discover our sophisticated range of internal enhancements, meticulously engineered to elevate operational excellence and customization, setting a new standard for circuit breaker performance.
1.1 Shunt Release: Experience the perfect blend of innovative design and precision with our shunt release. It is crafted to ensure optimal circuit breaker functionality, offering unparalleled efficiency and reliability.
Shunt Release Voltage: Our shunt release is engineered for unmatched efficiency, boasting 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 exceptional reliability by adhering to the specified maximum copper wire length, crucial for ensuring optimal shunt release operation and steadfast 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 table specifications are not met, we advocate for designing the shunt release control circuit as outlined, ensuring maximum effectiveness and operational assurance, providing peace of mind in every application.
1.2 Under-Voltage Release: Experience the epitome of reliability with our under-voltage release, meticulously crafted to deliver consistent and precise performance, enhancing operational safety and efficiency.
Under-Voltage Operation: Enter a 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 ensures steadfast protection and peace of mind.
Under-Voltage Protection: Protect your operations with our state-of-the-art feature, preventing hazardous circuit breaker closures when voltage falls below 35% of the rated threshold. This robust protection ensures secure closure above 85%, offering unwavering safety and performance with each operation.
Closing Mechanism: Our advanced under-voltage release mechanism assures robust circuit breaker closure at supply voltages exceeding 85% of the rated value. This mechanism acts as a formidable shield, ensuring seamless operations and providing an unmatched safety net for your systems.
Under-Voltage Ratings: With ratings at AC50Hz for both 230V and 400V, our circuit breakers deliver uncompromising performance across a wide range of applications, offering peace of mind with every use.
400V.
Special Note: Our circuit breakers, meticulously engineered 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 provides excellent 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 total 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 only during free or fault tripping events, ensuring accurate and timely alerts when absolutely necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Delve into the comprehensive specifications, including precise rated values and specific codes, all thoroughly detailed in Table 6, providing clarity and confidence in every application.
| 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: Following the tripping of the circuit breaker using an electric operating mechanism, it is of utmost importance to perform a reset of the circuit breaker prior to any reclosing attempts. This ensures that operations remain consistently safe and reliable at all times.
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 indicates a DAM2-type molded case circuit breaker, featuring a frame rated current of 100A, with standard breaking capacity, handle operation, 3 poles, dual and shunt release. Designed for motor protection, this model provides a rated current of 63A.
To achieve extraordinary performance, it is imperative that all selection, installation, and usage strictly comply with the product manual or relevant national standards, ensuring optimal operation and safety.
Note: The N-pole type of a 4P circuit breaker is divided into A-type and B-type. In the absence of specific specifications, the standard default is designated as B-type.
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