Circuit breaker A3781М

Production and sale of A3781M circuit breakers 250A, 225A, 200A, 180 A, 160A 440V - 320V DC. Warranty on A 3781M automatic circuit breakers 15 years! The best quality and price in Ukraine for A3781M switches. Delivery of automatic switch A-3781M vehicles is carried out by transport companies in a short time.

Automatic switches A3781M series (with electromagnetic release) are designed for maximum current protection of electrical installations and cables during overloads and short circuits in electrical circuits of direct and alternating current of 50 and 400 Hz frequency, as well as for infrequent operational disconnections and switching on of these circuits.

Switches A3781M TU16-641.032-85 are designed for installation on ships with an unlimited navigation area and can be operated in the following conditions:

1) the absence of direct exposure to solar and penetrating radiation that violates the thermal balance of the switch and leads to aging of the insulation;

2) ambient temperature from minus 40ºС (without dew and frost loss at temperatures from minus 40ºС to 5ºС) to 50ºС. Sometimes it is allowed (5-7 times over the entire service life of the switch) temperature rise to 60 ºС for a time of about 2 hours;

3) relative humidity of the surrounding air is not more than 98% at a temperature of 40 ° C;

4) a place to install a switch - should be protected from water, oil, emulsion, etc .;

5) environment - non-explosive, not containing dust (including conductive) in an amount that disrupts the operation of the automatic switch, corrosive gases and vapors in concentrations that destroy metals and insulation;

6) ambient air pressure in the range of 8,000 to 16,000 mm of water.

Mass auth. off A3781M will be 8.0 kg. no more