Customization: | Available |
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Breaking Capacity: | Low Voltage Circuit Breakers |
Operation: | Manual Type |
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The DAM2 (CM1) series circuit breaker is a formidable asset, boasting a rated insulation voltage of 800V. This masterpiece is diligently designed for AC distribution networks operating at 50Hz/60Hz, supporting a rated working voltage of up to 690V and a rated current reaching 1250A. It is perfectly suited for power distribution and circuit protection, providing stellar protection of equipment against overloads, short-circuits, under-voltage, and more. Its capability to manage infrequent circuit conversions and motor starts highlights its unmatched flexibility. Available for installation in both vertical and horizontal orientations, it exhibits remarkable versatility. With the isolation function denoted by the symbol " ", the DAM2 MCCB strictly complies with IEC60947-2 standards for low-voltage switchgear and control equipment, thus affirming its status as an exemplary circuit breaker.
1. Ambient air temperature: Ensure it's maintained between -5ºC to +40ºC, keeping the daily average below +35ºC.
2. Altitude: The installation site should maintain an altitude within 2000 meters to ensure optimal performance.
3. Atmospheric conditions: At +40ºC, relative humidity should not exceed 50%, but higher humidity is allowed at lower temperatures. The maximum average relative humidity is 90%, with a minimum monthly temperature of +25ºC, recognizing the possibility of condensation due to temperature fluctuations.
4. Pollution Degree: 3.
Selection of instructions
Classified by pole types:
Type A: N-pole without over-current release components, stays continuously connected, and operates independently from the other three poles.
Type B: N-pole without over-current release components, works simultaneously with the other three poles (N-pole activates before deactivation).
Type C: N-pole with over-current release components, collaborates with the other three poles (N-pole activates ahead of deactivation).
Classified by rated current of over-current release:
DAM2-63 MCCB Available in a comprehensive selection of nine ratings: 6, 10, 16, 20, 25, 32, 40, 50, and 63 A.
DAM2-100 MCCB Available in nine adaptable ratings: 16, 20, 25, 32, 40, 50, 63, 80, and 100 A.
DAM2-250 MCCB Available in a robust range of seven ratings: 100, 125, 140, 160, 180, 200, 225, and 250 A.
DAM2-400 MCCB Available in five distinctive ratings: 225, 250, 315, 350, and 400 A.
DAM2-630 MCCB Available in three potent ratings: 400, 500, and 630 A.
DAM2-800 MCCB Available in three formidable ratings: 630, 700, and 800 A.
DAM2-1250 MCCB: Unleash the power of choice with three formidable ratings: 800, 1000, and 1250 A, crafted to meet your most demanding specifications.
Remark: Kindly note that our specialized 6A version is exclusively engineered in the electromagnetic (instantaneous) type. Due to its specific constraints, general use is not advisable.
Wiring Options: Unlock the versatility of installation with our adaptable selection: front-of-board, back-of-board, or insertion type wiring. Customize your setup to precisely match your requirements with ease.
Over-Current Release Patterns: Select from our expertly designed thermodynamic-electromagnetic (dual) type or electromagnetic (instantaneous) type. Each pattern is meticulously crafted to meet diverse requirements, ensuring peak performance.
Outfit Options: Personalize your solution by opting for circuit breakers with or without outfit. This adaptable feature ensures you can effortlessly align with specific application needs.
Outfit Details: Elevate your system with a broad spectrum of accessories. Inner options include shunt release, under-voltage release, auxiliary contact, and alarm contact. Our outer accessories boast advanced turning handle and power-driven operation mechanisms, ensuring seamless integration and functionality.
Breaking Capacity: Embrace a wide spectrum of breaking capacities with our L-standard, M-second high, and H-high breaking types. Each is precisely engineered to suit various applications with exceptional accuracy.
1. Instantaneous Action Characteristics: For distribution circuit breakers, experience a setting value of 10In±20%. The DAM2-1250 model is set at 7In±20%. Motor protection circuit breakers boast a setting value of 12In±20%, ensuring steadfast performance.
2. Rated Values: For a comprehensive understanding, please consult Table 2, which outlines the rated values of our circuit breakers, equipping you with all essential specifications.
3. Ambient Temperature: With a temperature at +40ºC, the over-current release action characteristics for distribution circuit breakers are delineated in Table 3. Refer to Table 4 for motor protection circuit breakers, ensuring optimal performance across various conditions.
Rated Value: Delve into the detailed specifications of the circuit breaker's rated value, engineered to provide reliable and efficient performance across diverse scenarios.
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 into L, M, and H types, each type's breaking index is equivalent to the M-type, ensuring uniform and consistent performance.
Inverse Time Breaking Action: Examine the characteristics of over-current release for power distribution, ensuring reliable protection when all poles are powered concurrently.
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 feature a setting value of 10In±20%, while motor protection circuit breakers maintain a robust 12In±20%, offering steadfast and reliable protection.
Inverse Time Breaking Action: Analyze the over-current release characteristics for motor protection, ensuring dependable safeguarding with simultaneous power across all poles.
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 optimal efficiency with a rated control supply voltage of AC50Hz, 230V, 400V, or DC110V, 220V, 24V. It promises reliable circuit breaker functionality within a 70%~110% voltage range.
DC24V Shunt Release: Secure reliable functionality by following the specified maximum copper wire length, essential for optimal operation.
Rated control supply voltage Uc(DC24V)/Conductor area |
1.5mm² | 2.5mm² |
100%Uc 85%Uc |
150m 100m |
250m 160m |
Design Recommendations: If specifications in the table are unmet, we suggest designing the shunt release control circuit as illustrated for assured efficacy.
1.2 Under-Voltage Release
Under-Voltage Operation: Revel in the steadfast reliability of our under-voltage release system, meticulously crafted to deliver impeccable breaker performance amidst supply voltage variations between 70% and 35% of the rated voltage. Experience robust protection and serene peace of mind with every use.
Under-Voltage Protection: This cutting-edge feature vigilantly prevents unsafe circuit breaker closures when voltage drops below a critical 35% of the rated level. It ensures secure closure above 85%, maintaining safety and unwavering performance in all operational scenarios.
Closing Mechanism: The advanced under-voltage release mechanism guarantees robust circuit breaker closure at supply voltages exceeding 85% of the rated value. This protective measure ensures flawless operations and offers an unparalleled safety net for your systems.
Under-Voltage Ratings: Our breakers showcase ratings at AC50Hz for both 230V and 400V, promising unwavering performance across various applications and delivering peace of mind with each operation.
400V.
Special Note: With meticulous engineering, our circuit breakers equipped with an under-voltage release function operate seamlessly only at the rated voltage. This guarantees secure and reliable opening and closing operations, enhancing safety with each function.
normally.
1.3 Pre-Paid Meter Dedicated Release
The pre-paid meter dedicated release boasts a rating of AC230/50Hz, offering exceptional performance across an impressive range of 65% to 110% of Ue. The circuit breaker initiates a precisely timed opening between 0.5 and 2 seconds upon control disengagement, ensuring unmatched 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
Alarm contacts are ingeniously designed to remain inactive during standard operations. They seamlessly transition between normally open and normally closed states solely during free or fault tripping events, ensuring precise and timely alerts only when truly necessary.
2. External Accessories for Circuit Breakers
2.1 Motor Operating Mechanism: Explore comprehensive specifications, encompassing precise rated values and corresponding codes, meticulously expounded 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: After tripping a circuit breaker using the electric operating mechanism, it is vital to reset the breaker before any reclosing attempts to assure consistent and safe operations.
Principle Diagram for Opening and Closing of DAM2-63,100,225 Electric Operating Mechanism (AC)
Principle Diagram for Opening and Closing of DAM2-400,630,800,1250 Electric Operating Mechanism (AC)
2.2 Installation Dimensions for Manual Operating Mechanism (Refer to Table 10)
Diagram of Handle Mounting Hole for DAM2-63~800
Total Height of Electric/Manual Operating Mechanism of Circuit Breaker (mm) (Refer to Table 12)
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
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 is an exemplary model of the DAM2-type molded case circuit breaker. This model features a frame rated current of 100A, standard breaking capacity, handle operation, 3 poles, dual release, and shunt release, finely optimized for motor protection with a 63A rated current.
Ensure unparalleled performance by strictly adhering to the product manual or relevant national standards for selection, installation, and usage.
Note: The N-pole type of a 4P circuit breaker is classified into A-type and B-type. When no specifications are provided, the default designation is B-type.