| 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 our circuit breakers available in three robust ratings: 400, 500, and 630 A. Each is meticulously engineered to offer unrivaled reliability and power, ensuring that your electrical systems are fortified with superior strength and performance.
DAM2-800 MCCB Explore our premium 250A Fixed Type Circuit Breaker, designed to provide unmatched choices in three exceptional ratings: 630, 700, and 800 A. Empower your systems with the steadfast reliability and strength that meet your highest demands.
DAM2-1250 MCCB: Elevate your electrical systems with our expertly designed circuit breakers offering immense flexibility and power. With ratings of 800, 1000, and 1250 A, each is crafted for your most exacting specifications, delivering excellence beyond expectations.
Remark: For highly specialized applications, our 6A version is precisely crafted in the electromagnetic (instantaneous) type. Its specialized features make it unsuitable for general use, ensuring pinpoint precision where needed.
Wiring Options: Achieve ultimate installation flexibility with our adaptable wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations, enabling precise customization with unparalleled ease to meet your specific requirements.
Over-Current Release Patterns: Our exceptional range of over-current release patterns offers thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each is crafted with precision to meet diverse operational needs, ensuring optimal reliability and performance.
Outfit Options: Perfectly tailor your circuit breaker with customizable outfit options. Whether you choose with or without an outfit, this enables seamless adaptation to your unique application needs.
Outfit Details: Enhance your circuit breaker with a selection of versatile accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer enhancements feature advanced turning handle and power-driven mechanisms, guaranteeing flawless integration and operation.
Breaking Capacity: Discover a comprehensive range of breaking capacities with our precision-engineered options: L-standard, M-second high, and H-high breaking types. Each is meticulously crafted to accommodate various applications, ensuring supreme accuracy and reliability.
1. Instantaneous Action Characteristics: Enjoy precision with distribution circuit breakers set at 10In±20%, while the DAM2-1250 model offers 7In±20%. Motor protection circuit breakers ensure steadfast protection with a setting value of 12In±20%.
2. Rated Values: For a comprehensive understanding of our circuit breakers' capabilities, refer to Table 2 for a detailed overview of rated values, providing you with essential specifications at your fingertips.
3. Ambient Temperature: At a temperature of +40ºC, the over-current release characteristics for distribution circuit breakers are detailed in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring optimal performance in various conditions.
Rated Value: Immerse yourself in the intricate specifications of the circuit breaker's rated value. Each detail is crafted to deliver reliable, efficient performance across a variety of 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: In 2-pole and 4-pole circuit breakers classified into L, M, and H types, the breaking index for each type matches the M-type, ensuring consistent and uniform performance across the board.
Inverse Time Breaking Action: Delve into the over-current release characteristics for power distribution, ensuring steadfast protection when all poles are powered 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 offer a precise setting value of 10In±20%, while motor protection circuit breakers deliver robust protection with a 12In±20% setting, ensuring reliable performance in every scenario.
Inverse Time Breaking Action: Step into the realm of advanced motor protection with our over-current release characteristics, meticulously engineered to provide steadfast safeguarding across all poles. Experience the pinnacle of reliability and unwavering protection that ensures your operations are always in secure hands.
| 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 portfolio of accessories crafted to enhance the functionality and versatility of our circuit breakers. Each piece is precision-engineered to elevate performance and adaptability, offering you a tailored solution that meets your unique needs.
1. Internal Accessories of Circuit Breakers: Explore an exquisite range of internal enhancements for our circuit breakers, thoughtfully designed to boost operational excellence and allow for unprecedented customization.
1.1 Shunt Release: Marrying innovative design with precision engineering, our shunt release is crafted to deliver optimal functionality for circuit breakers, ensuring superior efficiency and unmatched reliability in every use.
Shunt Release Voltage: Designed for unbeatable efficiency, our shunt release operates with a rated control supply voltage of AC50Hz at 230V and 400V, or DC at 110V, 220V, and 24V. It promises robust functionality over a 70%~110% voltage range, guaranteeing seamless and reliable operations.
DC24V Shunt Release: Ensure unwavering reliability by adhering to specified maximum copper wire lengths, crucial for the optimal functioning of the shunt release.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: If prescribed table specifications are unmet, we strongly recommend designing the shunt release control circuit as detailed, ensuring peak effectiveness and operational assurance every time.
1.2 Under-Voltage Release: Witness the epitome of reliability with our under-voltage release, expertly designed to deliver unyielding performance, boosting both operational safety and efficiency consistently.
Under-Voltage Operation: Embrace exceptional dependability with our precisely engineered under-voltage release. It guarantees 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: Protect your operations with our state-of-the-art feature that prevents risky circuit breaker closures when voltage falls below 35% of the rated level. This formidable protection mechanism ensures secure closures above 85%, delivering consistent safety and performance with every operation.
Closing Mechanism: Our advanced under-voltage release mechanism ensures robust circuit breaker closure at supply voltages beyond 85% of the rated value. It operates as a formidable barrier, promising seamless operations and providing a superior safety net for your systems.
Under-Voltage Ratings: Our circuit breakers, rated at AC50Hz for both 230V and 400V, deliver unwavering performance across various applications, providing reassurance and reliability with every use.
400V.
Special Note: With precise engineering, our circuit breakers equipped with under-voltage release function flawlessly strictly 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 offers 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 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 intelligently designed to stay 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: Delve into the specific specifications, including detailed rated values and unique codes, fully elaborated 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 a circuit breaker trip initiated by the electric operating mechanism, it is paramount to reset the circuit breaker before attempting any reclosing. This vital step ensures steady and secure operations, providing peace of mind with every use.
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 (See Table 10 for detailed measurements)
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (Refer to Table 12 for specifics)
| 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 signifies a DAM2-type molded case circuit breaker, featuring a frame rated current of 100A, with standard breaking capacity and handle operation. Designed with 3 poles, dual release, and shunt release, it is specially tailored for motor protection, exhibiting a rated current of 63A.
To attain extraordinary performance, meticulously ensure that all selections, installations, and uses are in strict accordance with the product manual or adhere to relevant national standards.
Note: The N-pole type of a 4P circuit breaker is divided into A-type and B-type. In the absence of specific requirements, the default classification is B-type.
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