А3746, ВА3746

SALE OF AUTOMATIC A3746, A3746B, BA3746, A3746M, A3746P, A3746BR, A3746BT3, A3746BHL3 AUTOMATIC SWITCHES FOR NOMINAL CURRENT 630 A WITH ELECTROMAGNETT and THERMAL CHARACTERS and THERMALS.

Circuit breakers A3746 and BA3746 are designed to conduct current in normal mode and for selective protection during short circuits, overloads of unacceptable duration and unacceptable voltage drops, as well as for infrequent (up to 30 times a day) operational outages of electrical circuits with a rated voltage up to 660 V AC current frequency 50 and 60 Hz.

The switches can be equipped with an independent release, zero voltage release, free contacts and an electromagnetic drive.

Switches are available in fixed and retractable versions.

Technical characteristics of switches:

1. Rated current, A 630 (VA3740 to 800A)

2. Application category A.

3. The number of poles 2; 3

4. Rated current of a semiconductor tripping device (RP), A 400; 630; 800

5. Adjustable values ​​of nominal operating currents IR, A 400. 400; 500; 630.

6. The initial current of operation in the zone of overload currents, a multiple of the nominal operating current RP 1,25.

7. Setting the response time in the zone of overload currents at a current of 6IR, s: 4; eight; sixteen.

8. The settings for the operation current in the area of ​​short-circuit currents, multiples of the rated operating current 2; 3; five; 7; ten.

9. Settings for the current operation of electromagnetic releases, A 4000; 6300.

10. Rated operating maximum breaking capacity, kA:

- at rated voltage 380 V 56.

- at a rated voltage of 660 V 27.

11. Wear resistance of switches:

- total number of cycles per 12000.

- the number of VO cycles under load 8000.

12. Overall dimensions (width x height x depth), mm 225x400x160.

13. Weight (stationary version), not more than 27 kg, not more.

     With electromagnetic drive 50 kg not more