IEC60947-2 800A Altitude 2000m Isolation Circuit Breaker

FEM1 IEC60947-2 AC 63A-800A 2000m AC Circuit Breaker

FEM1 series moulded case circuit breaker is a new type product developed

and manufactured by Adopting international advanced technology.

It is supplied with rated insulation voltage 800V and used for circuit of AC 50Hz,

rated operation voltage AC 400V or below rated operation current up to 1600A

for infrequent changing over and starting of the motors.

Equipped with the protection devices for over-current, short circuit and under voltage,

the product is capable of preventing damage of circuits and supply units.

The product conforms to IEC60947-2 standard

Working Condition

• Not over altitude 2000m

• Ambient temperature is between -5℃ to+40℃
• Withstand the influence of moist air

• Withstand the influence of smoke fog,salt mist

• Withstand the influence of fungus

• The max. gradient is 22.5℃

• Working reliable under the condition of normal vibration in ship

• Working reliable under the condition of earth quake(4g)

• Working in the medium which not any explosive, no enough dielectric to corrode metal, no gas

• Working in the place would not be invaded by rain and snow

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According to the pole number of products,it classifies two-pole(100A, 225A), three-pole(no four-pole for FEM1-800), the neutral pole(N-pole) of the four-pole breakers has four types;

TypeA: N-pole without over-current release unit, it has been connected all along, and does not act with other three-pole to turn on or off.

Type B: N-pole without over-current release unit, it could act with other three-pole;

Type C: N-pole fixed with over-current release unit, it could act with other three-pole;

Type D: N-pole fixed with over-current release unit, it has been connected all along, and does not act with other three-pole to turn on and off

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According to rated current of products, it classififies:

FEM1-63: (6),10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, (no over-load protection for 6A);

FEM1-125: (10), 10A,16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A,100A, 125A;

FEM1-250: 100A, 125A, 140A, 160A,180A, 200A, 225A, 250A;

FEM1-400: 225A, 250A, 315A, 350A, 400A;

FEM1-630: 400A, 500A, 630A;

FEM1-800: 630A, 700A, 800A;

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According to connection mode, it classifies front in wiring,rear in wiring, and plug in type

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According to over-current release type, it classifies the thermodynamic-magnetic (binary) type

and magnetic (instantaneous) releases

Protective Characteristics

The thermodynamic of a circuit breaker provides the feature of inverse time-delay,while the magnetic release the instantaneous operation as shown on Table 1 (distribution circuit breaker)and Table 2 (motor protection circuit breaker):

Table 1(for distribution)

Table 2(for protective motor)

Current correction values used at different ambient temperatures

See Table 4 for sectional area of connecting conductor and the proper rated current:

Table 5

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