| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is a powerhouse of reliability, offering a rated insulation voltage of 800V. Specifically engineered for AC distribution networks operating at 50Hz/60Hz, it supports a rated working voltage up to 690V and a rated current up to 1250A. Ideal for power distribution and circuit protection, it provides robust defense against overloads, short circuits, under-voltage conditions, and beyond. This dynamic device supports infrequent circuit conversions and motor starts, offering unparalleled adaptability. Whether installed vertically or horizontally, its versatility shines. Certified for isolation by the symbol ' ', the DAM2 MCCB adheres to IEC60947-2 standards for low-voltage switchgear and control equipment, affirming its superior performance as a circuit breaker.
1. Ambient air temperature: Keep within -5ºC to +40ºC, ensuring the daily average stays below +35ºC for optimal operation.
2. Altitude: For peak performance, ensure the installation site altitude does not exceed 2000 meters.
3. Atmospheric conditions: At +40ºC, ensure relative humidity does not exceed 50%. Higher humidity levels can be tolerated at lower temperatures, with a maximum average relative humidity of 90% and a minimum average monthly temperature of +25ºC, considering possible condensation effects due to temperature fluctuations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components remains continuously connected and does not operate in conjunction with the other three poles.
Type B: N-pole without over-current release components operates in sync with the other three poles (N-pole engages prior to disengagement).
Type C: N-pole with over-current release components functions with the other three poles (N-pole activates before disengagement).
Classified by rated current of over-current release:
DAM2-63 MCCB Available in an extensive array of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A.
DAM2-100 MCCB Available in nine versatile ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A.
DAM2-250 MCCB Available in an impressive range of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A.
DAM2-630 MCCB Available in three robust ratings: 400, 500, and 630 A.
DAM2-800 MCCB Our Breaker Cm1 250A is available in three formidable ratings: 630, 700, and 800 A. This ensures you have the power to meet diverse energy demands with unwavering reliability and efficiency.
Introducing the DAM2-1250 MCCB, a powerhouse available in three commanding ratings: 800, 1000, and 1250 A. This range is designed to cater to high-demand scenarios, offering robust protection and performance.
Remark: Please kindly note that our specialized 6A version is exclusively crafted as an electromagnetic (instantaneous) type. Due to its unique specification constraints, it is not recommended for general use.
Wiring Options: Experience unrivaled versatility in installation with our selection of front-of-board, back-of-board, or insertion type wiring. Customize your setup to seamlessly align with your precise requirements.
Over-Current Release Patterns: Choose from our meticulously crafted thermodynamic-electromagnetic (dual) type or electromagnetic (instantaneous) type. Each option is tailored to meet a diverse range of requirements, ensuring optimal, dependable performance.
Outfit Options: Customize your circuit protection solution by selecting circuit breakers with or without outfits. This flexibility ensures seamless adaptation to specific application demands with ease.
Outfit Details: Elevate your system with our extensive range of premium accessories. Inner accessories include shunt release, under-voltage release, auxiliary contact, and alarm contact. Meanwhile, outer accessories feature sophisticated turning handle operation mechanisms and power-driven operation mechanisms for seamless functionality.
Breaking Capacity: Explore our broad spectrum of breaking capacities, including L-standard breaking type, M-second high breaking type, and H-high breaking type. Designed for precision, these options accommodate an extensive range of applications.
1. Instantaneous Action Characteristics: For distribution circuit breakers, the setting value is precisely calibrated at 10In±20%. For the DAM2-1250 model, it is 7In±20%. Motor protection circuit breakers are set at 12In±20%, ensuring robust, reliable performance.
2. Rated Values: For a comprehensive understanding of specifications, please refer to Table 2. It details the rated values of our circuit breakers, ensuring you have all necessary information for informed decision-making.
3. Ambient Temperature: At a temperature of +40ºC, the over-current release action characteristics are meticulously detailed in Table 3 for distribution circuit breakers, and in Table 4 for motor protection circuit breakers, ensuring optimal operation across varied environmental conditions.
Rated Value: Delve into the detailed specifications of the rated value of our circuit breaker, crafted to deliver reliable and efficient operation across various scenarios.
| 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: Our 2-pole and 4-pole circuit breakers, categorized into L, M, and H types, maintain a uniform breaking index equivalent to the M-type, ensuring consistent and reliable performance across all categories.
Inverse Time Breaking Action: Discover the unique characteristics of over-current release for power distribution, effective when all poles are powered simultaneously to ensure reliable, consistent 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: Our distribution circuit breakers are set at 10In±20%, while motor protection circuit breakers are set at 12In±20%, offering robust and reliable performance across applications.
Inverse Time Breaking Action: Explore the reliable characteristics of over-current release for motor protection, effective when all poles are powered simultaneously, ensuring dependable safeguarding.
| 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: Expertly designed to operate efficiently with a rated control supply voltage of AC50Hz, 230V, 400V, or DC110V, 220V, 24V. It guarantees reliable circuit breaker operation within a precise 70%~110% voltage range.
DC24V Shunt Release: Ensure steadfast operation by adhering to the specified maximum length of copper wire, which is crucial for optimal performance and reliability.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should the specifications outlined in the table above not be met, we recommend designing the shunt release control circuit as per the provided figure to guarantee effective and efficient operation.
1.2 Under-Voltage Release
Under-Voltage Operation: Our sophisticated under-voltage release ensures the breaker operates seamlessly, even when the supply voltage drops to an impressive range of 70%-35% of the rated voltage. This feature provides robust and reliable circuit protection, safeguarding systems even under challenging conditions.
Under-Voltage Protection: Equipped with cutting-edge technology, this crucial feature prevents the circuit breaker from closing if the voltage dips below 35% of the rated level. It ensures closure when voltage is above a consistent 85%, guaranteeing safe and efficient operation.
Closing Mechanism: The under-voltage release mechanism is engineered for excellence, ensuring the circuit breaker securely closes at supply voltages above 85% of the rated value. This design is integral in safeguarding seamless operational continuity.
Under-Voltage Ratings: With dependable ratings at AC50Hz, 230V, and 400V, our technology delivers exceptional performance across myriad applications, cultivating a sense of security and assurance in every installation.
400V.
Special Note: Our cutting-edge circuit breakers with under-voltage release are meticulously crafted to function optimally only at rated voltages. This ensures consistent and reliable performance in opening and closing operations, promoting safety and dependability.
normally.
1.3 Pre-Paid Meter Dedicated Release
Boasting a rated operating voltage Ue of AC230/50Hz, the pre-paid meter dedicated release ensures stellar performance across a dynamic spectrum, from 65% to 110% of Ue. Ingeniously, when control (Ctrl) disengages, the circuit breaker initiates a calculated delayed opening from 0.5 to 2 seconds, providing unmatched 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
Our alarm contacts are expertly designed to remain inactive during normal operations. They execute transitions between normally open and normally closed states exclusively during free or fault tripping events, ensuring precise alerts only when they are most critical.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: For detailed specifications including rated values and associated codes, please refer to Table 6 for comprehensive insights.
| 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: Post tripping with an electric operating mechanism, it is absolutely essential for the mechanism to reset the circuit breaker before attempting any reclosing action.
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 signifies a DAM2-type molded case circuit breaker. This distinguished model features a frame rated current of 100A, standard breaking capacity, handle operation, 3 poles, double release, and shunt release, perfectly tailored for motor protection with a rated current of 63A.
Selection, installation, and use must meticulously adhere to the product manual or pertinent national standards to secure exceptional performance.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. In scenarios where no specification is noted, B-type is the default designation.
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