| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is meticulously engineered to be a powerful solution, delivering a rated insulation voltage of 800V. Designed for AC distribution networks operating at both 50Hz and 60Hz, it adeptly supports a rated working voltage of up to 690V and a rated current capacity reaching up to 1250A. This makes it an ideal choice for power distribution and circuit protection, offering comprehensive safeguarding of equipment against overloads, short-circuits, and under-voltage conditions. Its capability for infrequent circuit conversions and motor starts highlights its extraordinary versatility. Furthermore, its design allows for both vertical and horizontal installation, providing remarkable flexibility. Marked by the isolation symbol " ", the DAM2 MCCB is fully compliant with IEC60947-2 standards for low-voltage switchgear and control equipment, confirming its status as a leading-edge circuit breaker.
1. Ambient air temperature: Ensure it remains consistently between -5ºC and +40ºC, with a daily average not surpassing +35ºC.
2. Altitude: For optimal performance and reliability, the installation site should be at an altitude of 2000 meters or lower.
3. Atmospheric conditions: At a temperature of +40ºC, ensure relative humidity is below 50%. Increased humidity levels are acceptable at lower temperatures, with a maximum average relative humidity not exceeding 90% and a minimum average monthly temperature set at +25ºC, considering the potential for condensation due to temperature fluctuations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: The N-pole is devoid of over-current release components, remaining continuously connected, and operates independently from the other three poles.
Type B: The N-pole lacks over-current release components, yet functions in tandem with the other three poles, activating before deactivation.
Type C: Featuring over-current release components, the N-pole operates synchronously with the other three poles, activating prior to deactivation.
Classified by rated current of over-current release:
DAM2-63 MCCB Available in an extensive range of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A, addressing diverse requirements.
DAM2-100 MCCB Offered in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring adaptability and superior performance.
DAM2-250 MCCB Available in a robust array of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, providing formidable performance capabilities.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering customized solutions for varied applications.
DAM2-630 MCCB Discover the epitome of circuit breaker design with our offerings in three formidable ratings: 400, 500, and 630 A. Each unit is a masterpiece of engineering, meticulously crafted to provide exceptional reliability and power. Fortify your electrical systems with these superior solutions, designed for unparalleled strength and performance.
DAM2-800 MCCB Explore our elite 250A Fixed Type Circuit Breaker, offering an unmatched array of choices in three extraordinary ratings: 630, 700, and 800 A. Infuse your systems with unwavering reliability and strength, precisely aligned with your most demanding standards.
DAM2-1250 MCCB: Transform your electrical infrastructure with our meticulously engineered circuit breakers, providing extensive flexibility and power. Available in 800, 1000, and 1250 A ratings, each is tailored to exceed your most stringent specifications, delivering excellence that goes beyond expectation.
Remark: Experience precision with our 6A version, expertly crafted for specialized applications in the electromagnetic (instantaneous) type. Its unique features make it unsuitable for general applications, ensuring pinpoint precision where expertise is essential.
Wiring Options: Unlock ultimate installation versatility with our dynamic wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations. Achieve precise customization with unparalleled ease to fulfill your specific demands.
Over-Current Release Patterns: Our exceptional selection of over-current release patterns includes thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each is designed to meet diverse operational needs, ensuring optimal reliability and superior performance.
Outfit Options: Tailor your circuit breaker with precision through customizable outfit options. Whether opting for with or without an outfit, this allows seamless adaptation to your unique application needs.
Outfit Details: Elevate your circuit breaker with a range of versatile accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer enhancements feature sophisticated turning handle and power-driven mechanisms, ensuring flawless integration and superior operation.
Breaking Capacity: Discover an extensive range of breaking capacities with our precision-engineered options: L-standard, M-second high, and H-high breaking types. Each is meticulously designed to accommodate various applications, ensuring supreme accuracy and dependable reliability.
1. Instantaneous Action Characteristics: Experience precision with distribution circuit breakers set at 10In±20%, while the DAM2-1250 model provides 7In±20%. Motor protection circuit breakers uphold steadfast protection with a setting value of 12In±20%.
2. Rated Values: Gain an in-depth understanding of our circuit breakers' capabilities by exploring Table 2, which offers a detailed overview of rated values, equipping you with essential specifications at your fingertips.
3. Ambient Temperature: At +40ºC, the over-current release characteristics for distribution circuit breakers are outlined in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring peak performance across diverse conditions.
Rated Value: Immerse yourself in the detailed specifications of the circuit breaker's rated value. Each parameter is finely crafted to deliver reliable, efficient performance across various 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: In 2-pole and 4-pole circuit breakers classified into L, M, and H types, the breaking index for each type aligns with the M-type, ensuring consistent and uniform performance throughout.
Inverse Time Breaking Action: Investigate the over-current release characteristics for power distribution, ensuring steadfast protection when all poles are energized simultaneously, offering trustworthy 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 are precisely set at a value of 10In±20%, while motor protection circuit breakers deliver robust protection with a 12In±20% setting, ensuring reliability in every scenario.
Inverse Time Breaking Action: Discover the epitome of cutting-edge motor protection with our expertly designed over-current release characteristics. Each aspect is meticulously crafted to provide steadfast safeguarding across all poles. Immerse yourself in unparalleled reliability and unwavering protection, ensuring your operations are always secure and efficient.
| 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 comprehensive collection of accessories, each skillfully crafted to enhance the functionality and versatility of our circuit breakers. Every piece is precision-engineered to not only elevate performance but also provide adaptability, offering you a bespoke solution that aligns perfectly with your distinct requirements.
1. Internal Accessories of Circuit Breakers: Discover a premium selection of internal enhancements for our circuit breakers. These components are thoughtfully designed to elevate operational excellence, offering unprecedented customization and efficiency.
1.1 Shunt Release: A harmonious blend of innovative design and precision engineering, our shunt release is meticulously crafted to deliver optimal functionality for circuit breakers. It ensures superior efficiency and reliability, making every operation seamless and dependable.
Shunt Release Voltage: Our shunt release is engineered for superior efficiency, functioning with a rated control supply voltage of AC50Hz at 230V and 400V, or DC at 110V, 220V, and 24V. It promises robust performance across a 70%~110% voltage range, ensuring reliable and seamless operations.
DC24V Shunt Release: Guarantee consistent reliability by adhering to specified maximum copper wire lengths, essential for the optimal performance of the shunt release mechanism.
| 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 not be met, we strongly recommend designing the shunt release control circuit as detailed, ensuring maximum effectiveness and operational assurance with every use.
1.2 Under-Voltage Release: Experience the pinnacle of reliability with our under-voltage release. It is expertly crafted to deliver steadfast performance, enhancing operational safety and efficiency with consistent precision.
Under-Voltage Operation: Experience unrivaled dependability with our precisely engineered under-voltage release. It ensures steadfast breaker performance amidst voltage fluctuations within the 70% to 35% range of the rated level, assuring you solid protection and peace of mind.
Under-Voltage Protection: Safeguard your operations with our state-of-the-art feature designed to inhibit risky circuit breaker closures when voltage descends below 35% of the rated level. This robust protection mechanism ensures secure closures above 85%, consistently delivering safety and performance with every operation.
Closing Mechanism: Our sophisticated under-voltage release mechanism guarantees secure circuit breaker closure at supply voltages beyond 85% of the rated value. This formidable barrier ensures seamless operations and presents a superior safety net for your systems.
Under-Voltage Ratings: Our circuit breakers, rated for AC50Hz at both 230V and 400V, deliver unmatched performance across a multitude of applications, providing assurance and reliability with every use.
400V.
Special Note: Engineered with precision, our circuit breakers equipped with under-voltage release operate flawlessly strictly at the rated voltage, ensuring secure and reliable opening and closing actions, thus reinforcing safety in every operation.
normally.
1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: With a rating of AC230/50Hz, this release offers superior performance across an impressive range of 65% to 110% of Ue. The circuit breaker executes a precisely timed opening between 0.5 and 2 seconds upon control disengagement, guaranteeing unparalleled safety and dependability 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 dormant during regular operations. They switch precisely between open and closed states solely 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: Explore the comprehensive specifications that detail the precise rated values and distinctive codes, all thoroughly detailed in Table 6 for your complete understanding.
| 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: In the event of a circuit breaker trip caused by the electric operating mechanism, it is crucial to reset the circuit breaker before any attempts at reclosing. This essential procedure guarantees consistently smooth and secure operations, ensuring your confidence in every application.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC)
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC)
2.2 Installation Dimensions for the Manual Operating Mechanism: Consult Table 10 to find exhaustive measurements tailored for precision and correctness.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm): For detailed specifications, please 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 Guide 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: The DAM2L-100 / 33102 63A represents a DAM2-type molded case circuit breaker. It features a frame rated current of 100A, standard breaking capacity, and handle operation. Designed with 3 poles, dual release, and shunt release, this product is expertly tailored for motor protection with a rated current of 63A.
To achieve unparalleled performance, it is imperative to ensure that all selections, installations, and usages strictly follow the guidelines laid out in the product manual or comply with relevant national standards.
Note: For a 4P circuit breaker, the N-pole type is categorized into A-type and B-type. If there are no specific requirements, the default is categorized as B-type for streamlined selection.
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