| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The powerhouse DAM2 (CM1) series circuit breaker is meticulously crafted with a rated insulation voltage of 800V. Tailored for AC distribution networks operating at 50Hz/60Hz, it efficiently manages a rated working voltage of up to 690V and handles current up to 1250A. Engineered to excel, it distributes power while protecting circuits and equipment from overloads, short-circuits, under-voltage, and other potential hazards. With its capability to support infrequent circuit conversions and motor starts, it offers exceptional versatility in installation options, whether vertical or horizontal. Recognized for its isolation capability, symbolized by ' ', the DAM2 MCCB adheres to the rigorous standards of IEC60947-2 for low-voltage switchgear and control equipment, Part 2: circuit breakers.
1. Ambient air temperature: Maintain a range from -5ºC to +40ºC, ensuring that the daily average does not surpass +35ºC.
2. Altitude: Confirm that the installation site remains below an altitude of 2000 meters.
3. Atmospheric conditions: At a maximum temperature of +40ºC, the relative humidity should not exceed 50%. Increased humidity levels are permissible at lower temperatures, with a maximum average relative humidity of 90% and a minimum average monthly temperature of +25ºC, accommodating temperature-induced condensation on the product's surface.
4. Pollution Degree: Level 3.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components, continuously connected, and does not operate with the other three poles.
Type B: N-pole without over-current release components, operates concurrently with the other three poles (N-pole activates prior to deactivation).
Type C: N-pole with over-current release components, operates in conjunction with the other three poles (N-pole activates before deactivation).
Classified by rated current of over-current release:
DAM2-63 MCCB Available in nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, 63 A, catering to a wide array of needs.
DAM2-100 MCCB Available in nine ratings: 16, 20, 25, 32, 40, 50, 63, 80, 100 A, ensuring adaptability for diverse applications.
DAM2-250 MCCB Available in seven ratings: 100, 125, 140, 160, 180, 200, 225, 250 A, providing flexibility for various requirements.
DAM2-400 MCCB Available in five ratings: 225, 250, 315, 350, 400 A, engineered to meet high-performance expectations.
DAM2-630 MCCB Available in three ratings: 400, 500, 630 A, crafted for robust, demanding environments.
DAM2-800 MCCB Available in three robust ratings of 630, 700, and 800 Amperes, the Cdada 250A Moulded Case Switch is expertly designed to cater to your higher capacity requirements, ensuring your systems operate with uncompromised efficiency.
DAM2-1250 MCCB offers unparalleled power and protection, available in three dynamic ratings: 800, 1000, and 1250 Amperes. Experience ultimate reliability and safety with these meticulously engineered circuit solutions.
Remark: Please be advised that the 6A version is restricted to electromagnetic (instantaneous) type only, due to its specification limitations. It is advisable to select with caution to guarantee optimal performance and system integrity.
Wiring Options: Personalize your installation with an extensive selection of wiring configurations, including front-of-board, back-of-board, or insertion types. These adaptable solutions ensure seamless integration into diverse setups, offering unparalleled installation flexibility.
Over-Current Release Patterns: Our circuit breakers feature a dual-type thermodynamic-electromagnetic model and an instantaneous-only electromagnetic model, crafted to suit a broad spectrum of applications with exceptional precision and unwavering reliability.
Outfit Options: Tailor your circuit breaker to your precise specifications by selecting options with or without outfit enhancements, guaranteeing a perfect fit for your electrical infrastructure and maximizing system performance.
Outfit Details: Elevate the functionality of your circuit breaker with our comprehensive range of inner accessories, including shunt and under-voltage releases, as well as auxiliary and alarm contacts. For outer accessories, choose from manual turning handles to advanced power-driven mechanisms, ensuring full control and versatility.
Breaking Capacity: Discover our extensive range of breaking capacity options, including L-standard, M-second high, and H-high breaking types. These selections are crafted to meet the varied demands of your applications, ensuring optimal circuit protection and longevity.
1. Instantaneous Action Characteristics: Our distribution circuit breakers are engineered with a setting value of 10In±20%, while the DAM2-1250 model boasts a precision configuration of 7In±20%. Motor protection circuit breakers maintain rigorous settings of 12In±20%, ensuring peak performance and safety.
2. Rated Values: For a detailed exploration of rated values, please consult Table 2. This comprehensive resource provides all specifications necessary to make informed decisions regarding our circuit breakers, empowering you with critical insights.
3. Ambient Temperature: At a standard ambient temperature of +40ºC, delve into the intricate over-current release action characteristics found in Table 3 for distribution circuit breakers and Table 4 for motor protection circuit breakers, ensuring superior performance across varying conditions.
Rated Value: Explore the in-depth specifics of our circuit breaker's rated value, offering a clear understanding of its full capabilities to ensure it aligns perfectly with your application needs.
| 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, segmented into L, M, and H types, maintain a consistent breaking index aligned with the M-type, ensuring reliability and uniform performance across all models.
Inverse Time Breaking Action: Gain insight into the detailed characteristics of over-current release for power distribution, especially when all poles are energized simultaneously, delivering comprehensive and 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: Our distribution circuit breakers are meticulously engineered with a setting value of 10In±20%, while motor protection circuit breakers are stringently set at 12In±20%, ensuring effective and secure operation.
Inverse Time Breaking Action: Examine the specific characteristics of over-current release for motor protection when all poles are equally energized, ensuring dedicated and precise protection for your systems.
| 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: Designed for utmost reliability, our shunt release operates seamlessly under a rated control supply voltage of AC50Hz, 230V, 400V, and DC110V, 220V, 24V. It assures dependable performance within a 70%~110% voltage range, ensuring flawless circuit breaker functionality.
DC24V Shunt Release: For assured reliable operation, adhere to specified standards for the maximum length of copper wire. This adherence guarantees that your circuit breaker remains operational and secure, safeguarding your electrical systems.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: In instances where the specified table requirements are not met, you have the opportunity to design your shunt release control circuit by meticulously following the provided figure. This will ensure optimal functionality and uncompromised safety, reinforcing your system's reliability.
1.2 Under-Voltage Release
Under-Voltage Operation: Our under-voltage release is engineered to ensure dependable circuit breaker performance even when the supply voltage significantly decreases to levels between 70%-35% of the rated voltage. This feature is paramount for maintaining the highest standards of safety and operational functionality.
Under-Voltage Protection: Our innovative under-voltage release prevents the circuit breaker from engaging when the voltage dips below 35% of the rated value, safeguarding your equipment. Conversely, when the voltage surpasses 85%, the system ensures secure closure, offering you both safety assurance and operational reliability.
Closing Mechanism: To guarantee secure circuit breaker operation, our under-voltage release actively facilitates closure when supply voltages are above 85% of the rated value. This mechanism is designed to enhance your system's safety and optimize operational integrity.
Under-Voltage Ratings: For unwavering performance, our devices are calibrated to AC50Hz, 230V, 400V, ensuring that they consistently meet the highest standards of reliability and safety for your peace of mind.
400V.
Special Note: Circuit breakers equipped with our under-voltage releases are meticulously designed to function optimally at the designated rated voltage, securing safe and efficient opening and closing cycles for enhanced operational safety.
normally.
1.3 Pre-Paid Meter Dedicated Release
Our cutting-edge pre-paid meter dedicated release is a marvel of modern engineering, designed with a rated operating voltage Ue of AC230/50Hz. It delivers exceptional performance across a flexible range of 65% to 110% of Ue. Ingeniously, when the control (Ctrl) is disengaged, the circuit breaker activates a delayed opening mechanism, ranging from 0.5 to 2 seconds, ensuring maximum safety and unrivaled reliability, offering you the ultimate peace of mind.
Wiring Diagram for Pre-Paid Meter Dedicated Release: Your comprehensive guide to achieving seamless connectivity and optimal performance.
1.4 Rated Values of Auxiliary Contacts and Alarm Contacts (Refer to Table 5 for comprehensive details)
| 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: Essential for bolstering operational efficiency and ensuring seamless system integration.
b. Alarm Contact: Precisely engineered for delivering reliable and timely notifications, enhancing your system's safety.
Our sophisticated alarm contacts are expertly designed to remain inert during normal operations, only switching between normal open and closed states upon free or fault tripping. This ensures that precise alerts are triggered exclusively when truly necessary, optimizing safety and reliability.
2. External Accessories for Circuit Breakers: Elevate your circuit breaker functionality and performance with our high-quality accessories.
2.1 Motor Operating Mechanism: Delve into the rated values and their corresponding codes as detailed in Table 6 for a comprehensive understanding and informed decision-making.
| 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 a circuit breaker trip with an electric operating mechanism, it is imperative that a reset is performed before re-engagement. This ensures the system's operational readiness and reliability.
Principle Diagram for the Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC): Visualize the intricate process to gain a comprehensive understanding for optimal system utilization.
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Gain a clear perspective on high-capacity operations with this detailed visualization.
2.2 Installation Dimensions for Manual Operating Mechanism: Refer to Table 10 to ensure a precise fit and flawless function in your installations, guaranteeing optimal performance.
Diagram of Handle Mounting Hole for DAM2-63~800: Your go-to guide for achieving precise installation and ensuring system integrity.
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12): Verify accurate integration with your systems to enhance efficiency 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 Table for DAM2 Series Molded Case Circuit Breakers: Your simplified guide to selecting the perfect circuit breaker with ease and precision.
| 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 stands for a DAM2-type molded case circuit breaker with a frame rated current of 100A. It offers standard breaking capacity, handle operation, 3 poles, double release, and shunt release, expertly engineered for motor protection with a rated current of 63A, ensuring superior performance.
To unlock the paramount efficiency of the Cdada 250A Moulded Case Switch for Fixed Type Circuit Breaker, it is imperative that all selection, installation, and usage are in complete conformity with the comprehensive product manual or adhere to the established relevant national standards. This ensures the longevity and optimal performance of your equipment.
Important Note: When considering the N-pole type of a 4P circuit breaker, it is critical to recognize the distinction between A-type and B-type classifications. In the absence of a specific request, B-type is designated as the default choice, providing a standard solution for most applications.
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