Circuit breaker AK63

Circuit breakers AK63 for rated current up to 63 A by electromagnetic releases and electromag-hydraulic releases. Automatic switches AK63 1, 2 poles are made for constant and variable (Hz 50, 400) currents. Circuit-breakers АК63 3 polar, are made on an alternating current.

Automatic circuit breakers are designed to conduct current in normal mode and protect against overloads of unacceptable duration, with short circuits and unacceptable voltage drops, and for infrequent, up to 20 times a day, operational tripping of electrical circuits with a rated voltage of up to 660 VAC of frequency 50 and 60 Hz and up to 440 VDC. AC automatic circuit breakers can also be used for protection and infrequent direct starts of asynchronous motors in the application category of AC-3. Circuit-breakers are produced by thermal and electromagnetic maximum releases, only with electromagnetic maximum current releases and without maximum current releases. The circuit breakers can be equipped with a zero-voltage release, an independent release, free contacts and an electromagnetic drive. Automatic are produced in a stationary version - front, rear and combined connection and in retractable design.

Technical characteristics of the switches:

1. Rated current 63A.

2. Number of poles 1; 2; 3.

3. Rated currents of thermal releases up to 63A.

4. Setting for the initial pick-up current in the zone of the overload currents, multiples of the rated current of the thermal trip unit 1.3.

5. Settings for the current triggering of electromagnetic maximum current releases up to 800A.

6. Rated operating short-circuit breaking capacity, kA: at a rated voltage of 380 V AC 25, at a nominal voltage of 660 V AC 19, at a nominal voltage of 440 VDC 50.

7. Wear resistance of circuit breakers - total number of cycles of VO 3000, number of VO cycles under load 1500.

8. Weight (stationary version) - 2.1 kg.