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AOMA-250-3P/4P Thermal Overload Alarm Does Not Operate

AOMA

Characteristics

AOMA series thermal overload non-operating circuit breakers are suitable for fire protection power distribution circuits with rated insulation voltage up to 1000V, AC 50Hz, rated working voltage up to 690V, and rated working current 10A to 800A. They are used to distribute circuits and overloads of power equipment. The alarm does not work after a short circuit, etc.

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:

Below 2000 meters above sea level;

Ambient medium temperature should be within -5℃to +40℃(+45℃for marine products);

lt can withstand the effect of damp air;

lt can withstand the effect of moulds;

lt can withstand the effect of nuclear radiation;

The max inclination is 22.5 degree;

lt still can work reliably when the ship subjects to normal vibration;

lt can still work reliably if the product subjects to the earthquake (4g).

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;

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

50/35

50/35

50/50

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 enquiry about quotation or cooperation,please feel free to email us ator use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.