| 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 robust powerhouse, boasting a rated insulation voltage of 800V. Tailored for AC distribution networks operating at 50Hz/60Hz, it accommodates a rated working voltage of up to 690V and a rated current capacity reaching up to 1250A. It is the ideal fit for power distribution and circuit protection, delivering comprehensive safeguarding for equipment against overloads, short-circuits, and under-voltage. Its flexibility in handling infrequent circuit conversions and motor starts highlights its extraordinary adaptability. With versatile installation options, both vertical and horizontal, it ensures seamless usability. Distinguished by the isolation symbol " ", the DAM2 MCCB strictly adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, reaffirming its status as a leading circuit breaker.
1. Ambient air temperature: Maintain a steady range from -5ºC to +40ºC, ensuring the daily average temperature does not exceed +35ºC for optimal operation.
2. Altitude: For optimal performance and dependability, the installation site should be positioned at an altitude of 2000 meters or lower.
3. Atmospheric conditions: At a temperature of +40ºC, relative humidity must be kept below 50%. However, higher humidity levels are permissible at reduced temperatures. The maximum average relative humidity should remain under 90%, with a minimum average monthly temperature of +25ºC, accommodating for possible condensation due to temperature variations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: The N-pole is devoid of over-current release components, maintaining a constant connection and operates independently from the other three poles.
Type B: The N-pole lacks over-current release components, but functions in tandem with the other three poles, activating prior to their deactivation.
Type C: Equipped with over-current release components, the N-pole operates harmoniously with the other three poles, activating before they deactivate.
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, meeting a wide array of requirements.
DAM2-100 MCCB Available in nine flexible ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring adaptability to various performance needs.
DAM2-250 MCCB Available in a strong array of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, delivering powerful performance capabilities.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for diverse 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: Immerse in the cutting-edge over-current release characteristics tailored for motor protection, ensuring steadfast safety with comprehensive power distribution across all poles. Rely on our unwavering protection for peace of mind.
| 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 array of accessories, each meticulously crafted to enhance the functionality and customization of our circuit breakers. These components are designed to boost performance and adaptability, offering unparalleled versatility.
1. Internal Accessories of Circuit Breakers: Discover the refined array of internal enhancements available for our circuit breakers, specifically engineered to elevate operational excellence and customization, delivering superior performance.
1.1 Shunt Release: Experience the perfect blend of innovation and precision with our shunt release, expertly crafted to ensure the ultimate circuit breaker functionality with unmatched efficiency and reliability.
Shunt Release Voltage: Our shunt release is engineered for extraordinary efficiency, operating with a rated control supply voltage of AC50Hz, 230V, 400V, or DC110V, 220V, 24V. It guarantees consistent functionality within a 70%~110% voltage range, ensuring seamless and reliable operation.
DC24V Shunt Release: Achieve impeccable reliability by strictly adhering to the specified maximum copper wire length, vital for ensuring optimal shunt release operation and maintaining top-tier performance.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: In the event that table specifications are unmet, we advocate designing the shunt release control circuit as outlined, ensuring peak effectiveness and operational reliability.
1.2 Under-Voltage Release: Experience ultimate reliability with our under-voltage release, engineered with precision to deliver consistent and precise performance, significantly boosting operational safety and efficiency.
Under-Voltage Operation: Enter the domain of unparalleled reliability with our expertly engineered under-voltage release. Crafted to maintain stellar breaker performance amidst supply voltage fluctuations between 70% and 35% of the rated voltage, it assures steadfast protection and peace of mind.
Under-Voltage Protection: Fortify 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 guarantees secure closure above 85%, ensuring steadfast safety and reliable performance in every operation.
Closing Mechanism: Our exceptional under-voltage release mechanism ensures robust circuit breaker closure at supply voltages exceeding 85% of the rated value. This mechanism serves as a powerful shield, guaranteeing seamless operations and providing a superior safety net for your systems.
Under-Voltage Ratings: Meticulously designed with ratings at AC50Hz for both 230V and 400V, our circuit breakers assure consistent performance across a wide spectrum of applications, ensuring peace of mind with every utilization.
400V.
Special Note: Through meticulous engineering, our circuit breakers equipped with under-voltage release function flawlessly only at the rated voltage, ensuring secure and reliable opening and closing functions, reinforcing safety at every operation.
normally.
1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release excels in performance over an extensive range of 65% to 110% of Ue. The circuit breaker triggers a precisely timed opening between 0.5 and 2 seconds upon control disengagement, delivering unrivaled safety and reliability for your tranquillity.
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 masterfully designed to remain inactive during standard operations. They precisely shift between normal open and closed states solely during free or fault tripping events, providing accurate and timely alerts only when absolutely necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Delve into comprehensive specifications, including precise rated values and specific codes, thoroughly 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: Following the tripping of a circuit breaker through an electric operating mechanism, it is imperative to reset the circuit breaker prior to any reclosing attempts. This ensures consistent, reliable, and safe operation, safeguarding your electrical systems.
Principle Diagram for the Opening and Closing Mechanism of DAM2-63,100,225 Electric Operating Systems (AC)
Principle Diagram for the Opening and Closing Mechanism of DAM2-400,630,800,1250 Electric Operating Systems (AC)
2.2 Installation Dimensions for Manual Operating Mechanism (Refer to Table 10 for detailed specifications)
Diagram of Handle Mounting Hole for DAM2-63~800, showcasing precise dimensions.
Overall Height Specifications for Electric/Manual Operating Mechanisms of Circuit Breakers (Measured in mm) (Refer to Table 12 for comprehensive data)
| 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, offering streamlined decision-making.
| 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 represents a DAM2-type molded case circuit breaker. This model is equipped with a 100A frame rated current, standard breaking capacity, handle operation, 3 poles, dual release, and shunt release. Specifically designed for motor protection, it features a rated current of 63A, providing robust and reliable operation.
To achieve unmatched performance, rigorously ensure that all selections, installations, and usage comply with the product manual or pertinent national standards, securing optimal functionality.
Note: The N-pole type for a 4P circuit breaker is classified into A-type and B-type. Without specific specifications, B-type is the default selection, ensuring standard compliance and consistency.
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