Introduction
The DAM1 series circuit breakers are expertly engineered to conduct current under normal conditions and to swiftly interrupt it under short circuits, overloads, or inadmissible bucking. They also adeptly handle operational actuation and tripping of electric circuit parts. Designed for electric units with an operative voltage of up to 400V and a rated current ranging from 12.5 to 1600A, these circuit breakers ensure reliable protection and performance in diverse electrical setups.
They adhere to the stringent requirements of EN 60947-1 and EN 60947-2 standards, ensuring top-tier safety and reliability.
Thermal-Magnetic Circuit Breakers:
Thermal Protection Function: (Protection under overload conditions)
Our bimetal, designed for thermal protection, consists of two metals with different expansion coefficients under heat. When heated, the bimetal bends towards the metal with less expansion, releasing a notch that enables the breaker mechanism to disable the breaker. The bending speed is directly proportional to the current size passing through the breaker, ensuring that overload protection is reliably achieved when load currents exceed the rated current.
Magnetic Protection Function(Protection under short circuit conditions): Another critical function of the breaker is tosafeguard the connected circuit against shortcircuits. These can occur due to phase-to-phasecontact or phase-to-ground contact. In the event ofa short circuit, an extremely high current flows throughthe cables, necessitating a rapid system shutdownto prevent damage. The breaker must perform aninstantaneous opening to protect the connected load.The mechanism responsible for this function is amechanical opening mechanism activated bymagnetization within the magnetic fieldgenerated by the short circuit current.
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 Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)
![MCCB Distribution Breaker Made with Asta Certified BMC Unflaming Material](//www.micstatic.com/athena/img/transparent.png)