| 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 and reliable solution, delivering a rated insulation voltage of 800V. Specifically designed for AC distribution networks operating at both 50Hz and 60Hz, it 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, providing comprehensive safeguarding of equipment against overloads, short circuits, and under-voltage conditions. Its capacity for infrequent circuit conversions and motor starts underscores its remarkable versatility. Additionally, its design allows for both vertical and horizontal installation, offering exceptional flexibility. Marked by the isolation symbol " ", the DAM2 MCCB adheres fully to IEC60947-2 standards for low-voltage switchgear and control equipment, confirming its status as a leading-edge circuit breaker.
1. Ambient air temperature: Maintain consistently between -5ºC and +40ºC, ensuring the daily average does not exceed +35ºC.
2. Altitude: For optimal performance and reliability, the installation site must be at or below 2000 meters.
3. Atmospheric conditions: At a temperature of +40ºC, the relative humidity should be below 50%. Higher humidity levels are permissible at lower temperatures, with a maximum average relative humidity not exceeding 90% and a minimum average monthly temperature of +25ºC, accounting for potential 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, remains continuously connected, and operates independently from the other three poles.
Type B: The N-pole lacks over-current release components, yet functions in unison with the other three poles, activating before deactivation.
Type C: Equipped with 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, meeting 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 tailored solutions for varied applications.
DAM2-630 MCCB Introducing our remarkable circuit breakers available in three formidable ratings: 400, 500, and 630 A. Each unit is meticulously crafted to deliver unparalleled reliability and dynamic power, ensuring your electrical systems are fortified with exceptional strength and performance.
DAM2-800 MCCB Discover the superior 250A Fixed Type Circuit Breaker, crafted to offer unparalleled choices in three extraordinary ratings: 630, 700, and 800 A. Empower your systems with unmatched reliability and unwavering strength that surpasses your highest expectations.
DAM2-1250 MCCB: Transform your electrical systems with our expertly engineered circuit breakers, offering immense versatility and power. With ratings of 800, 1000, and 1250 A, each unit is tailored to meet your most demanding specifications, delivering performance beyond expectations.
Remark: For highly specialized applications, our 6A version is meticulously designed in the electromagnetic (instantaneous) type. Its exclusive features make it unsuitable for general use, ensuring precise accuracy where it is essential.
Wiring Options: Achieve unmatched installation flexibility with our versatile wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations, allowing precise customization with unparalleled ease to meet your specific requirements.
Over-Current Release Patterns: Our impressive array of over-current release patterns includes thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs. Each is precisely crafted to cater to diverse operational needs, ensuring optimal reliability and performance.
Outfit Options: Personalize your circuit breaker with customizable outfit options. Whether you select with or without an outfit, this facilitates seamless adaptation to your unique application needs.
Outfit Details: Enhance your circuit breaker with a selection of adaptable accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer refinements feature advanced turning handle and power-driven mechanisms, ensuring flawless integration and operation.
Breaking Capacity: Explore a comprehensive array of breaking capacities with our precision-engineered options: L-standard, M-second high, and H-high breaking types. Each is meticulously crafted to suit various applications, ensuring 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 value 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 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 meticulously crafted to deliver reliable, efficient performance across a myriad of 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 classified into L, M, and H types, the breaking index for each type corresponds to the M-type, ensuring uniform and consistent performance across all classifications.
Inverse Time Breaking Action: Explore the over-current release characteristics for power distribution, ensuring steadfast protection when all poles are activated simultaneously, offering dependable safeguarding in every situation.
| 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. These are meticulously crafted to deliver steadfast safeguarding across all poles. Experience the pinnacle of reliability and unwavering protection, ensuring that your operations are consistently in secure hands, showcasing cutting-edge technology in motor 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: Immerse yourself in our extensive portfolio of accessories, each crafted to enhance the functionality and versatility of our circuit breakers. Every piece is precision-engineered to elevate performance and adaptability, providing a tailored solution to meet your unique needs with unmatched precision and finesse.
1. Internal Accessories of Circuit Breakers: Discover an exquisite range of internal enhancements for our circuit breakers, artfully designed to boost operational excellence. These enhancements allow for unprecedented customization, enabling you to tailor the breaker to your specific requirements.
1.1 Shunt Release: Marrying innovative design with precision engineering, our shunt release is crafted to provide optimal functionality for circuit breakers. It ensures superior efficiency and unmatched reliability with every use, embodying the perfect blend of design and technology.
Shunt Release Voltage: Our shunt release, designed for unbeatable efficiency, 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 for peak performance.
DC24V Shunt Release: Ensure unwavering reliability by adhering to specified maximum copper wire lengths, which are crucial for the optimal functioning of the shunt release. This adherence ensures long-lasting performance and operational efficiency.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: If the prescribed table specifications are unmet, we strongly recommend designing the shunt release control circuit as detailed. This ensures peak effectiveness and operational assurance every time, maximizing performance and safety.
1.2 Under-Voltage Release: Witness the epitome of reliability with our under-voltage release. Expertly designed, it delivers unyielding performance, boosting both operational safety and efficiency consistently, making it an indispensable component in your operations.
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 against unexpected downtimes.
Under-Voltage Protection: Guard your operations with our state-of-the-art feature, preventing risky circuit breaker closures when voltage falls below 35% of the rated level. This formidable 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 offering 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. This ensures operational continuity and peace of mind.
400V.
Special Note: With precise engineering, our circuit breakers equipped with under-voltage release function flawlessly at the rated voltage. This ensures secure and dependable opening and closing actions, reinforcing safety in every operation and maintaining operational integrity.
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 remain 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, providing an extra layer of operational safety.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Explore the intricate specifications of our cutting-edge motor operating mechanism, featuring comprehensive rated values and distinctive codes, all meticulously detailed in Table 6 to ensure precision and clarity.
| 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 a circuit breaker trip initiated by the electric operating mechanism, it is essential to reset the circuit breaker before proceeding with any reclosing actions. This crucial step ensures unwavering stability and security, delivering confidence and reliability with each operation.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC): A visual representation showcasing the seamless functionality of our electrical mechanisms.
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Detailed depiction illustrating the efficient operation of our larger capacity mechanisms.
2.2 Installation Dimensions for the Manual Operating Mechanism: For precise and accurate installation, refer to Table 10 for detailed measurements that ensure a perfect fit and optimal functionality.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800: A comprehensive guide to handle installations, ensuring ease of assembly and secure attachment.
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm): Consult Table 12 for specific measurements to guarantee correct alignment and seamless integration.
| 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: Your ultimate resource for selecting the perfect circuit breaker that meets your exact electrical needs and specifications.
| 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 represents a DAM2-type molded case circuit breaker. It boasts a frame rated current of 100A, standard breaking capacity, and handle operation. Equipped with 3 poles, dual release, and shunt release, it is expertly engineered for motor protection, with a rated current of 63A.
To achieve unparalleled performance, ensure meticulous adherence to product manual specifications or relevant national standards during selection, installation, and usage.
Note: The N-pole type of a 4P circuit breaker is categorized into A-type and B-type. In the absence of specific requirements, B-type is the default classification, assuring optimal performance.
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