Circuit breaker A3744SP

We manufacture and sell A3744SP circuit breakers for 400A, 500A, 630A, 380 V, 400V and 660V 50Hz and 400Hz 3P. Excellent quality and price in Ukraine for breakers A 3744SP (A3744CP). Automatic switches A 3744SP used in mobile installations. The warranty on the automatic switch A3744SP will be at least 20 years. During the deliveries, the A-3744SP, A 3744SP,A3744CP, A 3744 SP automatic circuit breakers iin Ukraine, Kazakhstan, Moldova, Latvia, Estonia, Lithuania, India, Mongolia, Vietnam, South Korea, Romania, Hungary, Bulgaria, Armenia, Azerbaijan, Tajikistan, South Africa, Turkey, Slovenia, Qatar, Czech Republic, Serbia, Macedonia, Iraq, Oman, Albania, Ethiopia, Sudan, Egypt and the British as well as in the countries of near and far abroad - in Asia, Europe, Africa, South America, the Middle East proved to be excellent at the KhEMZ plant. In stock. Export the circuit breakers A3744CП. Always A-3744-SP(A 3744SP) available!

Automatic switches А3744SP selective, for mobile installations (vibro and shock resistant) are intended for carrying out of a current in a normal mode, for selective protection at short circuits, for protection at overloads of inadmissible duration and for infrequent (up to 30 times a day) operational inclusions and switching-off of electric chains with a voltage of 380V or 660V AC of frequency 50 and 400Hz.

Switches A 3744SP are produced by three-pole in stationary version. Switches can be equipped with an independent release, free contacts, electromagnetic drive, manual remote drive.

The main technical characteristics of the switches A-3744SP:

1. Rated current, A 630.

2. Application category V.

3. Rated currents of semiconductor releases (RP), A 400; 500; 630.

4. Adjustable rated operating currents IR, A: 160; 200; 250; 315; 400; 500; 630.

5. Initial operating current in the zone of overcurrent, multiples of the rated working current of RP 1.3.

6. Setpoint according to the response time in the zone of overcurrent currents at a current of 6IR, s: 4; 8; 16.

7. Settings for the response time in the zone of short-circuit currents, with 0.1; 0.25; 0.4.

8. Settings for the operating current in the zone of short-circuit currents, multiples of the rated working current 2; 3; 5; 7 or 3; 5; 7; 10.

9. Rated short-time withstand current, kA 20.

10. Rated operating short-circuit breaking capacity, kA 50.

11. Wear resistance of switches:

- total number of cycles is 16,000.

- number of cycles of VO under load 3000.

12. Weight (stationary version), not more than 30.3 kg.

     With electromagnetic drive - 36 kg, no more than