| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is a formidable force in circuit management, offering a rated insulation voltage of 800V. Expertly engineered for AC distribution networks operating at 50Hz/60Hz, it supports a rated working voltage up to 690V and accommodates a rated current up to 1250A. Ideal for power distribution and circuit protection, it excels in safeguarding equipment against overloads, short-circuits, under-voltage, and other potential threats. With its capability for infrequent circuit conversions and motor starts, it embodies unparalleled versatility. Install it vertically or horizontally to suit your needs. The DAM2 MCCB is recognized for isolation by the symbol " ", and complies with IEC60947-2 standards for low-voltage switchgear and control equipment, underscoring its superior quality.
1. Ambient air temperature: Keep between -5ºC to +40ºC, ensuring the daily average does not exceed +35ºC for optimal performance.
2. Altitude: Maintain the installation site at an altitude of 2000 meters or less to ensure optimum functionality.
3. Atmospheric conditions: At +40ºC, relative humidity should not surpass 50%. Higher humidity levels are permissible at lower temperatures. The maximum average relative humidity is 90%, with a minimum average monthly temperature of +25ºC, considering condensation risks due to temperature variations.
4. Pollution Degree: 3, ensuring durability in challenging conditions.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components, remains continuously engaged, and operates independently of the other three poles.
Type B: N-pole without over-current release components, operates synchronously with the other three poles (N-pole engages before disengagement).
Type C: N-pole with over-current release components, functions in concert with the other three poles (N-pole engages before disengagement).
Classified by rated current of over-current release:
DAM2-63 MCCB Available in a wide array 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, to meet specific requirements.
DAM2-250 MCCB Available in a robust range of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, ensuring reliability.
DAM2-400 MCCB Available in five unique ratings: 225, 250, 315, 350, and 400 A, delivering flexible performance.
DAM2-630 MCCB Available in three powerful ratings: 400, 500, and 630 A, for demanding applications.
DAM2-800 MCCB Available in three formidable ratings: 630, 700, and 800 A, designed for high-capacity operations.
DAM2-1250 MCCB: Offering three powerful ratings - 800, 1000, and 1250 A - this product is versatile and ready to meet diverse requirements with precision.
Remark: Please be aware that our distinctive 6A model is strictly available in the electromagnetic (instantaneous) type. Due to its specific nature, it is not intended for general-purpose use.
Wiring Options: Experience limitless flexibility in installation with our choice of front-of-board, back-of-board, or insertion type wiring. Customize your configuration to meet precise needs.
Over-Current Release Patterns: Select from our thermodynamic-electromagnetic (dual) type or electromagnetic (instantaneous) type. Each is meticulously crafted to meet a variety of requirements, ensuring peak performance.
Outfit Options: Personalize your solution with either circuit breakers with outfit or without, providing the adaptability you need to effortlessly meet specific application demands.
Outfit Details: Enhance your setup with our wide selection of accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact, while outer accessories offer advanced turning handle operation mechanisms and power-driven operation mechanisms, ensuring seamless operation.
Breaking Capacity: Explore our wide array of breaking capacities, including L-standard, M-second high breaking, and H-high breaking types, each engineered to cater to a broad spectrum of applications with precision and reliability.
1. Instantaneous Action Characteristics: Distribution circuit breakers come with a setting value of 10In±20%, while the DAM2-1250 model offers 7In±20%. Motor protection circuit breakers boast a robust setting value of 12In±20%.
2. Rated Values: For detailed specifications, please refer to Table 2, which outlines the rated values of our circuit breakers, ensuring you have comprehensive information readily available.
3. Ambient Temperature: At +40ºC, over-current release action characteristics are detailed in Table 3 for distribution circuit breakers and in Table 4 for motor protection circuit breakers, ensuring optimal functionality across various conditions.
Rated Value: Delve into the complete specifications of the rated value of our circuit breakers, meticulously engineered to deliver reliable and efficient performance in any setting.
| 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: For our 2-pole and 4-pole circuit breakers, categorized under L, M, and H types, the breaking index for all categories matches the M-type, guaranteeing uniform, consistent performance.
Inverse Time Breaking Action: Explore the over-current release characteristics for power distribution, effective when all poles are energized simultaneously, ensuring reliable protection.
| 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 setting value of 10In±20%, while motor protection circuit breakers have a setting value of 12In±20%, ensuring strong, reliable performance.
Inverse Time Breaking Action: Understand the characteristics of over-current release for motor protection, effective when all poles are energized simultaneously, delivering dependable 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
1. Internal Accessories of Circuit Breakers
1.1 Shunt Release
Shunt Release Voltage: Engineered for optimal performance, it operates efficiently with a rated control supply voltage of AC50Hz, 230V, 400V, or DC110V, 220V, 24V, ensuring reliable operation within a 70%~110% voltage range.
DC24V Shunt Release: Ensure dependable operation by adhering to the specified maximum length of copper wire, essential for peak 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 specifications outlined in the table are not met, we advise designing the shunt release control circuit according to the provided figure to ensure optimal effectiveness.
1.2 Under-Voltage Release
Under-Voltage Operation: Experience the pinnacle of reliability with our under-voltage release mechanism. It ensures the circuit breaker operates seamlessly even when supply voltage fluctuates to 70%-35% of its rated voltage, providing steadfast protection and peace of mind.
Under-Voltage Protection: Our circuit breakers feature an advanced under-voltage protection system that prevents closure when voltage dips below 35% and secures closure above 85% of the rated level. This guarantees safe, consistent, and trustworthy performance.
Closing Mechanism: Equipped with a robust under-voltage release mechanism, our circuit breaker ensures secure closure at supply voltages surpassing 85% of the rated value, safeguarding operational integrity with unmatched precision.
Under-Voltage Ratings: Designed for versatility, our circuit breakers perform reliably at AC50Hz, 230V, and 400V across diverse applications, providing you with dependable peace of mind.
400V.
Special Note: Our circuit breakers are meticulously engineered to function optimally at rated voltage, offering safe, consistent opening and closing, courtesy of the dependable under-voltage release mechanism.
normally.
1.3 Pre-Paid Meter Dedicated Release
The pre-paid meter dedicated release boasts a rated operating voltage Ue of AC230/50Hz. It performs exceptionally across a wide range from 65% to 110% of Ue. Ingeniously, upon disengagement of the control (Ctrl), the circuit breaker initiates a strategically delayed opening of 0.5 to 2 seconds, ensuring unparalleled safety and reliability.
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
Alarm contacts are expertly engineered to remain inactive during normal operations, switching between normal open and closed states only during free tripping or fault tripping, ensuring precise alerts precisely when necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: For comprehensive specifications, including rated values and codes, please refer to 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: After tripping the circuit breaker with an electric operating mechanism, it is crucial that the mechanism resets the circuit breaker before reclosing is attempted, ensuring optimal functionality.
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: The DAM2L-100 / 33102 63A is a stellar model of the DAM2-type molded case circuit breaker, offering a frame rated current of 100A, standard breaking capacity, handle operation, 3 poles, double release, with shunt release. It is engineered for motor protection with a rated current of 63A, ensuring unparalleled efficiency.
Selection, installation, and usage should strictly follow the product manual or adhere to relevant national standards, ensuring superior performance and reliability.
Note: For the N-pole type of a 4P circuit breaker, there are A-type and B-type classifications. In cases lacking specification, the default is B-type, ensuring consistency and ease of use.
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