| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
|
Still deciding? Get samples of US$ 10/Piece
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
The DAM2 (CM1) series circuit breaker is a pinnacle of engineering with a rated insulation voltage of 800V. It is meticulously crafted for AC distribution networks at 50Hz/60Hz, supporting a rated working voltage of up to 690V and a rated current of up to 1250A. This breaker is the ideal solution for power distribution and offers unmatched protection for circuits and equipment against overloads, short circuits, under-voltage, and various other faults. It also facilitates infrequent circuit conversions and motor starts. Its versatility allows for both vertical and horizontal installations, and it is suitable for isolation applications, as indicated by the symbol " ". The DAM2 MCCB meets the stringent IEC60947-2 standard for low-voltage switchgear and control equipment, ensuring reliability and safety.
1. Ambient air temperature: The breaker operates efficiently in temperatures ranging from -5ºC to +40ºC, with a daily average not surpassing +35ºC.
2. Altitude: The installation site should not exceed an altitude of 2000 meters to maintain optimal performance.
3. Atmospheric conditions: At a peak temperature of +40ºC, the relative humidity must not exceed 50%. Higher humidity levels are permissible at cooler temperatures. The average maximum relative humidity is 90%, with an average minimum monthly temperature of +25ºC, considering possible temperature variations that might lead to condensation on the product surface.
4. Pollution Degree: 3, ensuring the breaker can withstand challenging environmental conditions.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components remains continuously connected, operating independently from the other three poles.
Type B: N-pole without over-current release components functions harmoniously with the other three poles, activating before deactivation.
Type C: N-pole equipped with over-current release components, working in tandem with the other three poles, where N-pole activates prior to 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, offering flexibility and choice in various applications.
DAM2-100 MCCB available in nine ratings: 16, 20, 25, 32, 40, 50, 63, 80, 100 A, catering to a broad spectrum of electrical needs.
DAM2-250 MCCB available in seven ratings: 100, 125, 140, 160, 180, 200, 225, 250 A, designed for more demanding electrical systems.
DAM2-400 MCCB available in five ratings: 225, 250, 315, 350, 400 A, ensuring robust performance in larger installations.
DAM2-630 MCCB available in three ratings: 400, 500, 630 A, suitable for high-capacity systems.
DAM2-800 MCCB available in three ratings: 630, 700, 800 A, providing powerful options for substantial electrical demands.
DAM2-1250 MCCB available in three ratings: 800, 1000, 1250 A, tailored for the most intensive applications.
Remark: The 6A version is specifically designed for electromagnetic (instantaneous) type utilization. However, it is not recommended due to its specification limitations, ensuring optimal performance in other available versions.
Wiring Options: Tailor your installation needs with options including front-of-board wiring, back-of-board wiring, or insertion type wiring, providing exceptional versatility and seamless integration into various setups.
Over-Current Release Patterns: Experience flexibility with thermodynamic-electromagnetic (dual) type and electromagnetic (instantaneous) type, each catering excellently to diverse operational demands.
Outfit Options: Customize your setup with a choice between circuit breakers equipped with outfit or those without, aligning perfectly with your unique specifications and preferences.
Outfit Details: Enhance functionality with inner accessories like shunt release, under-voltage release, auxiliary contact, and alarm contact. Outer accessories boast convenience and reliability with turning handle operation mechanisms and power-driven operation mechanisms, among others.
Breaking Capacity: With options of L-standard, M-second high, and H-high breaking types, this variety meets the demands of a wide range of applications, ensuring robust performance every time.
1. Instantaneous Action Characteristics: For distribution circuit breakers, enjoy a precise setting value of 10In±20%. Meanwhile, the DAM2-1250 model offers a reliable setting of 7In±20%. Motor protection circuit breakers are finely tuned with a setting value of 12In±20%.
2. Rated Values: For comprehensive details on the rated values of our circuit breakers, refer to Table 2.
3. Ambient Temperature: Evaluate performance with over-current release action characteristics at +40ºC, detailed in Table 3 for distribution circuit breakers and in Table 4 for motor protection circuit breakers.
Rated Value: Discover thorough specifications detailing the rated values, ensuring clarity and reliability in your circuit breaker's performance.
| 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: Both 2-pole and 4-pole circuit breakers, classified in L, M, and H types, offer a breaking index that matches the M-type, ensuring consistent performance across categories.
Inverse Time Breaking Action: Understand the robust characteristics of over-current release for power distribution scenarios when all poles are energized simultaneously.
| 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 are calibrated to a setting value of 10In±20%, while motor protection circuit breakers are optimized with a setting value of 12In±20%.
Inverse Time Breaking Action: Gain insights into the characteristics of over-current release for motor protection when all poles are simultaneously powered, ensuring efficiency and safety.
| 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: The circuit breaker ensures reliable operation with a rated control supply voltage of AC50Hz, 230V, 400V; DC110V, 220V, 24V, functioning impeccably within a 70%~110% voltage range.
DC24V Shunt Release: Ensure reliable operation by adhering to specified copper wire length requirements, maintaining optimal performance.
| Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
| 100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: Should table specifications not be met, design the shunt release control circuit following the provided figure to maintain operational integrity.
1.2 Under-Voltage Release
Under-Voltage Operation: With supply voltage dropping to 70%-35% of rated voltage, the under-voltage release ensures the circuit breaker's reliability and safety.
Under-Voltage Protection: Below 35% rated voltage, the under-voltage release prevents closure of the circuit breaker; above 85%, it ensures secure closure, safeguarding systems efficiently.
Closing Mechanism: Assure secure closure of the circuit breaker with the under-voltage release function at supply voltages exceeding 85% of the rated value.
Under-Voltage Ratings: Rated at AC50Hz, 230V, 400V, our circuit breakers promise reliable performance and unwavering security.
400V.
Special Note: Circuit breakers equipped with under-voltage release are expertly designed to operate correctly only at rated voltage, ensuring safe and efficient opening and closing mechanisms.
normally.
1.3 Pre-Paid Meter Dedicated Release
Step into a world of precision with our pre-paid meter dedicated release, boasting a rated operating voltage Ue of AC230/50Hz. This ensures exceptional performance across an extensive range of 65% to 110% of Ue. In an extraordinary display of safety and reliability, upon disengagement of the control (Ctrl), the circuit breaker is designed to execute a delayed opening within a span of 0.5 to 2 seconds.
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: A comprehensive overview of its rated values and potential applications.
b. Alarm Contact: Discover the critical role and specifications of alarm contacts here.
Alarm contacts are meticulously engineered to remain inoperative during standard circuit breaker functions. They are designed to transition between normally open and normally closed states exclusively during free tripping or fault tripping, providing precise notifications only when necessary.
2. External Accessories for Circuit Breakers: Enhance functionality with our range of external accessories.
2.1 Motor Operating Mechanism: Explore the rated values and corresponding codes in detail within 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: After the circuit breaker trips with an electric operating mechanism, the mechanism must reset the circuit breaker before it can be closed again, ensuring readiness and efficiency.
Principle Diagram for Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC): Visualize the operational intricacies.
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC): Detailed insight into larger capacity models.
2.2 Installation Dimensions for Manual Operating Mechanism (Refer to Table 10): Accurate measurements for seamless installation.
Diagram of Handle Mounting Hole for DAM2-63~800: An essential guide for proper handle installation.
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12): Precise height specifications for informed installations.
| 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: Simplify your choice with our comprehensive selection guide.
| 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 denotes a DAM2-type molded case circuit breaker with a framed current rating of 100A, standard breaking capacity, handle operation, 3 poles, double release, with shunt release, tailored for motor protection with a rated current of 63A.
Selection, installation, and usage must strictly adhere to the product manual or applicable national standards to ensure peak performance and safety.
Note: The N-pole type of a 4P circuit breaker is available in A-type and B-type. Without specific instructions, B-type is the default selection.
){kind=link}