AOMA series molded case circuit breakers with rated working voltage up to 690V,rated insulation voltage up to 1000V,rated impact withstand voltage up to 8KV,Rated current 16A~400A.Suitable for power distribution and motor protection occasions, also suitable for fire occasions, with overload alarm without tripping function,When the line is overloaded, the circuit breaker with this function is installed to output overload signal without tripping, so as to ensure the continuity of power supply and meet theGB50054Clause 4.3.5: "Overload protection shall be applied to signals (alarms) and shall not be applied to disconnection of circuits where sudden loss of power is greater than the loss caused by overload".
Product features：
Feature 1: U-shaped static contact
Feature 2: modularized accessories
Feature 3: miniaturized frame
Feature 4: contact repulsion device (patented technology)
Feature 5: intelligence
Feature6: modularized arc extinguishing system
Feature 7: unification
Ambient and installation conditions：
l Below 2000 meters above sea level;
l Ambient medium temperature should be within -5℃to +40℃(+45℃for marine products);
l lt can withstand the effect of damp air;
l lt can withstand the effect of moulds;
l lt can withstand the effect of nuclear radiation;
l The max inclination is 22.5 degree;
l lt still can work reliably when the ship subjects to normal vibration;
l lt can still work reliably if the product subjects to the earthquake (4g).
l Places where the surrounding medium is free from explosion danger, and far awayfrom gas or conductive dust that would erode the metal or destroy the insulation;
l keep away from rain or snow.
Product selection guide：
Main performance indexes：
|
Type |
AOMA-160 |
AOMA-250 |
AOMA-400 |
||||
|
Pole |
3P,4P |
3P,4P |
3P,4P |
||||
|
Rated current（A） |
16,20,32,40,50,63,80,100,125,140,160 |
100,125,140,160,180,200,225,250 |
250,315,350,400 |
||||
|
Rated voltage |
AC 400V |
AC 400V |
AC 400V |
||||
|
Rated insulation voltage |
AC 1000V |
AC 1000V |
AC 1000V |
||||
|
Short-circuit breaking capacity(KA)Icu/Ics |
AC 400V |
38/18 |
50/35 |
65/65 |
|||
|
Operating cycle number |
ON |
3000 |
3000 |
2000 |
|||
|
OFF |
7000 |
7000 |
4000 |
||||
|
Outline dim. (mm) a-b-c-ca |
3P |
90-155-88-115 |
105-165-88-115 |
140-257-103-155 |
|||
|
4P |
120-155-88-115 |
140-165-88-115 |
184-257-103-155 |
||||
|
Weight (kg) |
3P |
1.2 |
1.7 |
5.7 |
|||
|
4P |
1.5 |
2.1 |
7.5 |
||||
|
Electric operating device (MD) |
● |
● |
● |
||||
|
External driving operating handle |
● |
● |
● |
||||
|
Automatic release |
Thermal electromagnetic type |
Thermal electromagnetic type |
Thermal electromagnetic type | ||||
If you have any enquiny about quotation or cooperation,please feel free to emal us at sales06@aoasis.cn or use the folowing enuiry form.
Our sales representative will contact you within 24 hours. Thank you for your interest in our products
