| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is a meticulously crafted powerhouse, engineered to deliver a rated insulation voltage of 800V. Tailored for AC distribution networks at both 50Hz and 60Hz, it efficiently supports a rated working voltage up to 690V and a rated current capacity up to 1250A. This makes it an impeccable choice for power distribution and circuit protection, providing comprehensive defense against overloads, short-circuits, and under-voltage conditions. Its aptitude for infrequent circuit conversions and motor starts underscores its exceptional versatility. Additionally, its design permits both vertical and horizontal installation, offering remarkable flexibility. Signified by the isolation symbol " ", the DAM2 MCCB fully complies with IEC60947-2 standards for low-voltage switchgear and control equipment, reinforcing its position as a premium circuit breaker.
1. Ambient air temperature: Maintain a consistent range between -5ºC and +40ºC, with a daily average not exceeding +35ºC for optimal performance.
2. Altitude: For peak performance and reliability, ensure the installation site is at an altitude of 2000 meters or below.
3. Atmospheric conditions: At a temperature of +40ºC, ensure relative humidity remains below 50%. Higher humidity levels are permissible at lower temperatures, with a maximum average relative humidity not surpassing 90% and a minimum average monthly temperature of +25ºC, accounting for potential condensation due to temperature shifts.
4. Pollution Degree: 3, ensuring resilience and reliability in varied environments.
Selection of instructions
Classified by pole types:
Type A: The N-pole is free of over-current release components, staying consistently connected, and functions independently from the other three poles.
Type B: The N-pole lacks over-current release components but functions in unison with the other three poles, activating before deactivation.
Type C: Featuring over-current release components, the N-pole operates in harmony with the other three poles, activating ahead of deactivation.
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 diverse needs.
DAM2-100 MCCB Offered in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring versatility and superior performance.
DAM2-250 MCCB Available in a formidable array of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A, providing exceptional performance capabilities.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for varied applications.
DAM2-630 MCCB Step into the realm of superior circuit breaker technology with our offerings in three formidable ratings: 400, 500, and 630 A. Each unit is precision-engineered to deliver outstanding reliability and power, reinforcing your electrical systems with the utmost strength and unmatched performance.
DAM2-800 MCCB Discover our elite 250A Fixed Type Circuit Breaker, available in three impressive ratings: 630, 700, and 800 A. Elevate your systems with the unwavering reliability and robust strength that cater to your most stringent requirements.
DAM2-1250 MCCB: Enhance your electrical systems with cutting-edge circuit breakers designed for ultimate versatility and power. Available in ratings of 800, 1000, and 1250 A, each is meticulously crafted to meet the most demanding specifications, delivering performance that exceeds expectations.
Remark: For applications requiring extreme precision, our 6A version is crafted in the electromagnetic (instantaneous) type. Its specialized nature makes it ideal for targeted applications, ensuring precision where it is paramount.
Wiring Options: Unlock maximum installation versatility with our flexible wiring selections. Choose from front-of-board, back-of-board, or insertion type configurations, allowing precise customization with effortless simplicity to meet your distinct needs.
Over-Current Release Patterns: Our impressive selection of over-current release patterns includes thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each is precisely crafted to fulfill diverse operational requirements, ensuring optimal reliability and peak performance.
Outfit Options: Customize your circuit breaker with tailored outfit options. Whether with or without an outfit, this customization ensures seamless adaptation to your specific application requirements.
Outfit Details: Customize your circuit breaker with a range of versatile accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Outer enhancements feature advanced turning handle and power-driven mechanisms, ensuring flawless integration and operation.
Breaking Capacity: Explore a full spectrum of breaking capacities through our precisely engineered options: L-standard, M-second high, and H-high breaking types. Each is meticulously crafted to suit a variety of applications, providing supreme precision and reliability.
1. Instantaneous Action Characteristics: Experience 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 of 12In±20%.
2. Rated Values: For an in-depth understanding of our circuit breakers' capabilities, refer to Table 2 for a detailed overview of rated values, providing crucial 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, consult Table 4, ensuring optimal performance under various conditions.
Rated Value: Immerse yourself in the detailed specifications of the circuit breaker's rated value. Each detail is designed to provide reliable, efficient performance across diverse 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 categorized 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: Explore the over-current release characteristics for power distribution, offering steadfast protection when all poles are powered simultaneously, delivering reliable safeguarding consistently.
| 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 provide a precise setting value of 10In±20%, while motor protection circuit breakers offer robust protection with a setting of 12In±20%, ensuring reliable performance in every circumstance.
Inverse Time Breaking Action: Step into the world of advanced motor protection with our meticulously designed over-current release characteristics. These are engineered to provide steadfast safeguarding across all poles, ensuring the height of reliability and unwavering protection for your operations. Rest assured, your endeavors are in secure hands, with an unyielding guardian that defends against challenges.
| 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, each crafted with precision to elevate the functionality and versatility of our circuit breakers. These components are masterfully designed to enhance performance and adaptability, presenting you with a tailored solution that meets your unique needs. Experience the perfect blend of form and function as you enhance your systems.
1. Internal Accessories of Circuit Breakers: Discover an exquisite range of internal enhancements for our circuit breakers. Each element is thoughtfully designed to boost operational excellence, allowing for unprecedented levels of customization. Elevate your circuit breaker functionality to new heights with innovations that cater to your specific requirements.
1.1 Shunt Release: Seamlessly combining innovative design with precision engineering, our shunt release ensures optimal functionality for circuit breakers. This meticulously crafted component guarantees superior efficiency and unparalleled reliability in every application, making it an indispensable part of your electrical systems.
Shunt Release Voltage: Engineered for unbeatable efficiency, our shunt release functions seamlessly with a rated control supply voltage of AC50Hz at 230V and 400V, or DC at 110V, 220V, and 24V. It promises robust operability over a wide 70%~110% voltage range, ensuring consistent and reliable performance that you can depend on.
DC24V Shunt Release: Maintain unwavering reliability with careful adherence to specified maximum copper wire lengths. This is crucial for the optimal functioning of the shunt release, ensuring that your systems operate with precision and reliability every time.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: If the specified table requirements are not met, we suggest designing the shunt release control circuit as outlined, ensuring peak effectiveness. This approach guarantees operational assurance, delivering consistent and reliable performance in every situation.
1.2 Under-Voltage Release: Experience the epitome of reliability with our under-voltage release. Expertly crafted, it consistently delivers unyielding performance, enhancing both operational safety and efficiency. It's a testament to quality design, ensuring that your operations are always protected and efficient.
Under-Voltage Operation: Embrace outstanding dependability with our precisely engineered under-voltage release. It ensures steadfast breaker performance amidst voltage fluctuations, covering a range from 70% to 35% of the rated level. This provides rock-solid protection, allowing you peace of mind and uninterrupted operations.
Under-Voltage Protection: Protect your operations with our cutting-edge feature that prevents circuit breaker closures when voltage dips below 35% of the rated level. This formidable protection mechanism guarantees secure closures above 85%, ensuring consistent safety and performance with every operation.
Closing Mechanism: Our advanced under-voltage release mechanism ensures robust circuit breaker closure at supply voltages exceeding 85% of the rated value. Acting as a formidable barrier, it promises seamless operations while providing a superior safety net for your systems, ensuring security and reliability.
Under-Voltage Ratings: Our circuit breakers, rated at AC50Hz for both 230V and 400V, deliver unwavering performance across a variety of applications. They stand as a testament to reliability and reassurance, ensuring robust protection and performance with every use.
400V.
Special Note: Our circuit breakers, equipped with under-voltage release, are engineered for flawless performance strictly at the rated voltage. This precision design ensures secure opening and closing actions, reinforcing safety in every operation, and providing peace of mind every time.
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1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release excels across a remarkable range of 65% to 110% of Ue, offering outstanding performance. The circuit breaker ensures a perfectly timed opening between 0.5 and 2 seconds upon control disengagement, delivering unparalleled safety and reliability, guaranteeing 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 inactive during standard operations. They transition accurately between open and closed states only during free or fault tripping events, providing timely and precise alerts when they are truly necessary, enhancing your operational awareness.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Discover the intricate details of our motor operating mechanism. Immerse yourself in its comprehensive specifications, complete with detailed rated values and exclusive codes, elaborated to perfection 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 an electric-triggered circuit breaker trip, it is essential to reset the breaker before any reclosing attempts. This crucial step ensures a steady and secure operation, granting peace of mind with each use, and maintaining the highest standards of safety and efficiency.
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 (Detailed measurements can be found in Table 10)
Diagram Illustrating the Handle Mounting Hole Configuration for DAM2-63~800
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (Check Table 12 for detailed specifications)
| 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 |
Comprehensive 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: Decipher the DAM2L-100 / 33102 63A. This represents a DAM2-type molded case circuit breaker with a frame rated current of 100A, offering standard breaking capacity and manual handle operation. Designed with 3 poles, it includes dual release and shunt release, tailored specifically for motor protection, boasting a rated current of 63A.
For unparalleled performance, ensure every selection, installation, and usage strictly complies with the product manual or relevant national standards, aiming for excellence and reliability at every step.
Note: The 4P circuit breaker's N-pole type can be categorized into A-type and B-type. In the absence of specific instructions, B-type is the default classification.
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