| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is expertly crafted to be a formidable solution, offering a rated insulation voltage of 800V. Tailored for AC distribution networks at both 50Hz and 60Hz, it efficiently manages a rated working voltage up to 690V and a rated current capacity up to 1250A. This makes it an optimal choice for power distribution and circuit protection, delivering comprehensive safeguarding against overloads, short-circuits, and under-voltage conditions. Its ability for infrequent circuit conversions and motor starts further underscores its remarkable versatility. Additionally, the design supports both vertical and horizontal installation, providing exceptional flexibility. Marked by the isolation symbol, the DAM2 MCCB aligns with IEC60947-2 standards for low-voltage switchgear and control equipment, securing its place as a top-tier circuit breaker. Embrace the epitome of safety and adaptability.
1. Ambient air temperature: Must consistently range between -5ºC and +40ºC, with a daily average not exceeding +35ºC. Maintain optimal conditions for sustained performance.
2. Altitude: To ensure optimal performance and reliability, installations should be at altitudes of 2000 meters or below. Elevate your expectations without compromising efficiency.
3. Atmospheric conditions: At +40ºC, relative humidity should be under 50%. Higher humidity levels are permissible at reduced temperatures, with a maximum average relative humidity not exceeding 90% and a minimum average monthly temperature of +25ºC, considering potential condensation due to temperature changes. Achieve flawless operation even in variable climates.
4. Pollution Degree: 3. Endure environmental challenges with robust resilience.
Selection of instructions
Classified by pole types:
Type A: The N-pole lacks over-current release components, is continuously connected, and operates independently of the other three poles. A steadfast choice for streamlined operations.
Type B: The N-pole is devoid of over-current release components but functions in coordination with the other three poles, activating before deactivation. Harmonize your system with seamless integration.
Type C: Equipped with over-current release components, the N-pole operates in unison with the other three poles, activating prior to deactivation. Perfect synergy for comprehensive control.
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, catering to diverse needs. Precision engineered for ultimate adaptability.
DAM2-100 MCCB Offered in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A, ensuring flexibility and outstanding performance. Empower every application with brilliant versatility.
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. Unleash powerful potential across varied scenarios.
DAM2-400 MCCB Available in five distinct ratings: 225, 250, 315, 350, and 400 A, offering tailored solutions for varied applications. Optimize performance with precision-tailored options.
DAM2-630 MCCB Unleash unmatched reliability with our state-of-the-art circuit breakers, available in three formidable capacities: 400, 500, and 630 A. Masterfully engineered for precision, each unit ensures your electrical systems are fortified with unparalleled strength and exemplary performance.
DAM2-800 MCCB Step into a realm of superior performance with our exceptional 250A Fixed Type Circuit Breaker, exquisitely crafted to provide unrivaled choices in three prestigious ratings: 630, 700, and 800 A. Empower your systems with steadfast reliability and enduring strength that consistently fulfill your highest expectations.
DAM2-1250 MCCB: Transform your electrical infrastructure with our meticulously engineered circuit breakers, offering incredible versatility and power. With capacities of 800, 1000, and 1250 A, each model is designed to transcend your stringent standards, delivering exceptional performance that surpasses expectations.
Remark: For applications demanding utmost precision, our 6A version is meticulously crafted in electromagnetic (instantaneous) type. Its specialized features are tailored for precision tasks, ensuring unparalleled accuracy where it is paramount, while being unsuitable for general use.
Wiring Options: Experience the ultimate in installation versatility with our adaptable wiring solutions. Choose from front-of-board, back-of-board, or insertion type configurations, enabling customized solutions that perfectly align with your specific requirements effortlessly.
Over-Current Release Patterns: Our expansive suite of over-current release patterns, including thermodynamic-electromagnetic (dual) and electromagnetic (instantaneous) designs, is expertly crafted to accommodate a multitude of operational requirements, ensuring exceptional reliability and optimal performance.
Outfit Options: Achieve precision tailoring of your circuit breaker with our versatile outfit options. Whether outfitted or not, these options provide seamless adaptation to your unique application needs.
Outfit Details: Enhance your circuit breaker with a range of versatile accessories. Interior options feature shunt release, under-voltage release, auxiliary contact, and alarm contact, while our exterior enhancements include sophisticated turning handles and power-driven mechanisms for flawless integration and functionality.
Breaking Capacity: Explore a comprehensive range of breaking capacities with our expertly crafted options: L-standard, M-second high, and H-high breaking types. Each is meticulously designed to cater to diverse applications, ensuring unparalleled precision and reliability.
1. Instantaneous Action Characteristics: Experience precise distribution with circuit breakers set at 10In±20%, and for the DAM2-1250 model, 7In±20%. Motor protection breakers assure steadfast defense with settings of 12In±20%, guaranteeing consistent protection across various applications.
2. Rated Values: For a comprehensive understanding of our circuit breakers' capabilities, consult Table 2 for a detailed exploration of rated values, providing crucial specifications at your disposal.
3. Ambient Temperature: At +40ºC, discover the detailed over-current release characteristics for distribution circuit breakers in Table 3. For motor protection circuit breakers, refer to Table 4, ensuring optimal performance under a variety of conditions.
Rated Value: Embrace the detailed specifications of rated values for circuit breakers, each aspect crafted to deliver reliable and efficient performance across varied 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: For 2-pole and 4-pole circuit breakers classified as L, M, and H types, the breaking index for each type aligns with that of the M-type, providing consistent and uniform performance across all classifications.
Inverse Time Breaking Action: Investigate the designed over-current release characteristics for power distribution, ensuring steadfast protection when all poles are energized, delivering unwavering safeguarding at every turn.
| 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 precise setting values of 10In±20%, while motor protection circuit breakers deliver strong protection with a 12In±20% setting, ensuring reliable performance across a spectrum of scenarios.
Inverse Time Breaking Action: Embark on an extraordinary journey into the cutting-edge realm of advanced motor protection technology with our meticulously developed over-current release characteristics. These components are brilliantly crafted to provide steadfast safeguarding across every pole, ensuring an unparalleled level of reliability and unwavering protection. Trust in our solution to keep your operations secure, offering steadfast reliability every step of the way, ensuring your peace of mind.
| 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: Dive into our vast and remarkable array of accessories, each one expertly crafted to enhance the functionality and versatility of our circuit breakers. These components, carefully precision-engineered, are designed to elevate your system's performance and adaptability, providing you with a tailored and bespoke solution that caters perfectly to your specific requirements.
1. Internal Accessories of Circuit Breakers: Discover an exquisite selection of internal enhancements for our circuit breakers. These components are thoughtfully and intricately designed to boost operational excellence and allow for unprecedented customization, ensuring that your systems operate at their peak potential with unmatched efficiency and reliability.
1.1 Shunt Release: Our shunt release harmoniously combines innovative design with precision engineering, crafted to provide optimal functionality for circuit breakers. This guarantees superior efficiency and unmatched reliability in every deployment, ensuring your systems' top performance.
Shunt Release Voltage: Our shunt release is meticulously crafted for unmatched efficiency, operating seamlessly with a rated control supply voltage at AC50Hz of 230V and 400V, or DC at 110V, 220V, and 24V. It ensures robust functionality across an extensive 70% to 110% voltage range, promising seamless and reliable operations each time, ensuring your peace of mind.
DC24V Shunt Release: To ensure unwavering reliability, it is crucial to adhere to the specified maximum copper wire lengths, which are vital for the optimal functioning of the shunt release. This meticulous attention to detail guarantees consistent performance, ensuring your systems' reliability and effectiveness.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should the prescribed table specifications be unmet, we strongly advocate designing the shunt release control circuit as detailed. This ensures peak effectiveness and operational assurance every single time, providing seamless performance and fostering heightened reliability.
1.2 Under-Voltage Release: Experience the epitome of reliability with our expertly crafted under-voltage release, designed to deliver unyielding performance. It consistently boosts operational safety and efficiency, ensuring your peace of mind and safeguarding your systems in every scenario.
Under-Voltage Operation: Embrace unparalleled dependability with our precisely engineered under-voltage release. It assures steadfast breaker performance amidst voltage fluctuations within the 70% to 35% range of the rated level, providing solid protection and peace of mind, keeping your systems secure and reliable.
Under-Voltage Protection: Safeguard your operations with our cutting-edge feature that prevents risky circuit breaker closures when voltage dips below 35% of the rated level. This formidable protection mechanism guarantees secure closures above 85%, delivering consistent safety and excellence with every operation, ensuring your systems' reliability.
Closing Mechanism: Our sophisticated under-voltage release mechanism ensures robust circuit breaker closure at supply voltages beyond 85% of the rated value. It acts as a formidable barrier, promising seamless operations and offering a superior safety net for your systems, providing peace of mind and unparalleled reliability.
Under-Voltage Ratings: Rated at AC50Hz for both 230V and 400V, our circuit breakers deliver steadfast performance across a variety of applications, providing reassurance and reliability with every use, ensuring your systems' top performance.
400V.
Special Note: With meticulous engineering, our circuit breakers equipped with under-voltage release function flawlessly at the rated voltage, ensuring secure and dependable opening and closing actions. This reinforces safety in every operation, offering unparalleled reliability and consistency.
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1.3 Pre-Paid Meter Dedicated Release
Pre-Paid Meter Dedicated Release: Rated at AC230/50Hz, this release exemplifies 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, providing peace of mind and unmatched operational assurance.
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 meticulously designed to remain inactive during standard operations. They are engineered to switch with impeccable precision between open and closed states only during free or fault tripping events. This ensures that alerts are timely and accurate, only when genuinely necessary, providing you with the confidence of knowing that every signal is significant.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Delve into the precise specifications, revealing in-depth rated values and distinctive codes perfectly detailed in Table 6. Discover the nuances that make each mechanism a masterpiece of engineering.
| 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 absolutely vital to reset the circuit breaker before attempting any reclosing. This critical step ensures consistent and secure operations, offering unparalleled peace of mind and reliability with every use.
Principle Diagram for the Opening and Closing Actions of DAM2-63,100,225 Electric Operating Mechanism (AC) - A comprehensive schematic that unfolds the mechanism's complex functions.
Principle Diagram for the Opening and Closing Actions of DAM2-400,630,800,1250 Electric Operating Mechanism (AC) - An indispensable guide for mastering the operation of these formidable mechanisms.
2.2 Installation Dimensions for the Manual Operating Mechanism (Refer to Table 10 for exact measurements) - The definitive resource for precise installation assessments, ensuring optimal performance.
Diagram Depicting the Handle Mounting Hole Configuration for DAM2-63~800 - This intricate depiction serves as the ultimate guide for flawless handle installation, ensuring secure and stable operations.
Overall Height Specifications of Electric/Manual Operating Mechanism for the Circuit Breaker (mm) (See Table 12 for comprehensive details) - Ensures your installations conform to exacting standards, optimizing functionality and reliability.
| 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 fast track to selecting the right circuit breaker with assured confidence and precision, tailored to your specific requirements.
| 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 exemplifies a DAM2-type molded case circuit breaker. With a frame rated current of 100A, it features standard breaking capacity and handle operation. It is equipped with 3 poles, dual release, and shunt release, specifically crafted for motor protection, with a rated current of 63A.
To achieve extraordinary performance, ensure every selection, installation, and operation meticulously adheres to the product manual or complies with relevant national standards, thereby maintaining excellence and reliability.
Note: The N-pole type of a 4P circuit breaker comes in A-type and B-type classifications. In the absence of specific requirements, the default classification is B-type, ensuring consistent reliability and streamlined functionality.
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