А3728, ВА3728
SALE AND PRODUCTION OF AUTOMATIC SWITCHES А3728, A3728B, А3728BHL3, А3728БР, A3728BT3, VА3728, A3728SR, A3728ST3 - AT RATED CURRENTS UP TO 250 A. WARRANTY 3 YEARS! Exporting the automatic switches A 3728 250A 3P 660V, 400V, 380V, 690V 50Hz - 60 Hz.
TECHNICAL DESCRIPTION: Automatic circuit-breakers А3728, A3728B, А3728BHL3, А3728БР, A3728BT3, VА3728, A3728SR, A3728ST3, A-3728 are designed to conduct current in normal mode and protect against overloads of unacceptable duration, short circuits and unacceptable voltage drops, as well as for infrequent 30 times per day) of operational disconnections of electrical circuits with a rated voltage of up to 660 VAC of frequency 50, 60 and 400 Hz and up to 440 VDC.
Alternating current circuit-breakers can also be used for protection and infrequent direct starting of induction motors in the category of AC-3 applications.
Switches A3728 are produced without maximum current releases.
Switches can be equipped with an independent release, a zero-voltage release, free contacts and an electromagnetic drive.
Switches are manufactured in stationary and in retractable designs.
Technical characteristics of the switches:
1. Rated current, A 250.
2. Number of poles 3.
3. Rated currents of thermal releases, A 160; 200; 250.
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 tripping of electromagnetic maximum current releases, A 2500.
6. Rated operating short-circuit breaking capacity, kA:
- at a rated voltage of 380 V AC 35.
- at a nominal voltage of 660 VAC 19.
- at a nominal voltage of 440 VDC 100.
7. Wear resistance of switches:
- total number of cycles is 16,000.
- the number of cycles of VO under a load of 10000.
8. Overall dimensions (width x height x depth), mm 150 x 320 x 157.
9. Weight (stationary version) 9.9 kg. With electromagnetic drive - 14,1 kg.