Introduction
The DAM1 series circuit breakers are meticulously engineered to conduct current in normal operating modes and to interrupt it in the event of short circuits, overloads, or other inadmissible conditions. Designed for seamless integration into electric units with an operative voltage up to 400V and a rated current range from 12.5A to an impressive 1600A, these circuit breakers ensure reliable operational actuation and tripping of electric circuit parts.
They rigorously adhere to the stringent requirements of EN 60947-1 and EN 60947-2 standards, ensuring superior performance and safety.
Thermal-Magnetic Circuit Breakers:
Thermal Protection Function: (For Protection Under Overload Conditions)
The bimetallic strip, integral for thermal protection, consists of two metals with differing thermal expansion rates. Upon heating, the bimetal bends towards the metal with the lower expansion coefficient, releasing a notch that triggers the breaker mechanism, thereby interrupting the circuit. The speed at which the bimetal bends correlates directly with the current passing through the breaker-higher currents generate more heat, thus enhancing the overcurrent protection function at load currents exceeding the rated current.
Magnetic Protection Function:(For Protection Under Short Circuit Conditions) Another critical function of the breaker is tosafeguard the connected circuit against shortcircuits, which can occur due tophase-to-phase contact or phase-to-ground contact.Given the extremely high current that surges through cables during a short circuit, it is imperativethat the system energy is quickly interrupted to prevent thermal damage. The breaker mustact instantaneously to protect the loadit is connected to. This critical function is performed by amechanical opening mechanism that isactivated by the magnetic field generated by the short circuit currentensuring that the breaker responds swiftlyand effectively to prevent damage.
Thermal-Magnetic fixed type Circuit Breakers |
|
Model |
DAM1-250 |
Breaking Capacity Code |
N |
S |
H |
G |
Rated Current of Frame size- Inm (A) |
250A |
Rated Current-In(40,50 or 55ºC) (A) |
63 - 80-100-125 - 160(180) - 200(225) - 250(320)A |
Rated İnsulation Voltage -Ui(a.c.) 50-60Hz (V) |
750V |
Rated operation Voltage -Ue(a.c.) 50-60Hz (V) |
400/415V |
Number of Pole |
3P /4P |
Rated ultimate short Circuit breaking Capacity kA Icu AC400V/50Hz O-CO (KA) |
35 |
50 |
65 |
85 |
Rated service short Circuit breaking Capacity kA Ics AC400V/50Hz O-CO-CO (KA) |
26.25 |
37.5 |
48.75 |
51 |
Rated short-circuit breaking capacity Icm(peak)/cos ф AC400V/50HZ O-CO (KA) |
77/0.25 |
114/0.25 |
143/0.2 |
178/0.2 |
Rated impulse withstand Voltage -Uimp (V) |
8000 |
Dielectric Propery (V) |
3000 |
lonization distance (mm) |
≤30/0 |
Endurance |
Total Cycles |
8000 |
Electrical Life |
1000 |
Mechanical Life |
7000 |
Over Current trip |
Thermal and Magnetic release fix type |
√ |
Category (EN 60947-2/IEC 60947-2) |
Main circuit |
A/B |
Auxiliary circuit |
AC-15 |
Under Voltage Release |
√ |
Shunt Release |
√ |
Auxiliary Contact |
√ |
Alarm Contact |
√ |
Auxiliary Contact and Alarm Contact |
√ |
Handle Operation Mechanism |
√ |
Electrical Operastion Mechanism |
√ |
DIN clips |
- |
Terminal cover |
|
|
√ |
Phase seperator |
|
|
√ |
Extention Handle |
|
|
- |
|
W (mm) |
3P |
105 |
4P |
140 |
L (mm) |
3P |
170 |
4P |
170 |
H (mm) |
3P |
103.5 |
4P |
103.5 |
Weight |
Fixed version 3P/4P |
2.7/3.5 |
41.5/5.5 |
Plug-in version 3P/4P |
3.2/4.2 |
4.6/6 |
Draw out version 3P/4P |
3.6/4.6 |
5/6.4 |
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)
![MCCB 3p 250A Switch with BMC Unflaming Material and Asta Certification](//www.micstatic.com/athena/img/transparent.png)