Circuit breaker A3744SU3
Sale and manufacturing of automatic circuit breakers А3744SU3, А3744SR, А3744ST3, А3744SHL3, А3744 SU3, А3744 SR, А3744 ST3, А3744 SHL3 630A, 500A, 400A and 320A 3P, 380V, 400V, 660V 50-60Hz. Deliveries to any country in the world - Ukraine, Kazakhstan, Moldova, Estonia, Latvia, Lithuania, Armenia, Azerbaijan, Hungary, Bulgaria, Romania, Poland, Sudan, Mongolia, Iraq, India, Algeria, Qatar, Poland, Sri Lanka, Algeria, China, Sudan, South Africa and the Czech Republic as well as in the countries of near and far abroad - in Asia, Europe, Africa, South America, the Middle East! Ready-to-ship products are always available. We manufacture automatic circuit breakers for the replacement of the A3744CU3, A3744SHL3 of the Ulyanovsk plant of the contactor - 100% coincidence of ALL INSTALLATION SIZES! To comply with the operating and guarantee rules, the circuit breakers are sealed. In the delivery set there is always a passport of the automatic switch A 3744. Warranty 3 years! All products are certified! Seiiing automatic switches А 3744SU3, А 3744SR, А 3744ST3, А 3744SHL3, А-3744SU3, А-3744SR, А-3744ST3, А-3744SHL3 380V, 400V, 660V 50 Hz - 60 Hz. EAC Certificate of Conformity No. EAEU KG417/033.UA02.00261 for the entire series of A3700 circuit breakers. Export.
Automatic switches А3744С, VА3744С high-speed ones are designed for conducting current in normal mode, for selective protection in case of short circuits, for protection during overloads of unacceptable duration and for infrequent (up to 30 times a day) operational switching-on and switching off of electrical circuits with voltage up to 380V AC frequency 50 and 60Hz.
Switches A 3744С are produced in stationary version - front, rear, combined connections and in retractable design. Switches can be equipped with an independent release, a zero-voltage release, free contacts, an electromagnetic drive, a manual remote drive (in retractable version).
Such climatic designs-
for moderate climate - A3744SU3
for cold climate - A3744SHL3
for the tropical climate - A3744ST3
for river transport- A3744SR
Technical characteristics of the switches:
1. Rated current, A 630 (VA3740 to 800A)
2. Application category A.
3. The number of poles 3.
4. Rated current of the semiconductor release (RP), A 400; 630; 800.
5. Adjustable rated operating currents IR, A 250; 315; 400; 500; 630; 800.
6. Initial operating current in the zone of the overload currents, multiples of the rated working current of RP 1.25.
7. Set-point according to the response time in the zone of overcurrent currents at a current of 6IR, s: 4; 8; 16.
8. Settings for the operating current in the zone of short-circuit currents, multiples of the rated working current 2; 3; 5; 7; 10.
9. Settings for the current tripping of electromagnetic releases, A 4000; 6300.
10. Rated operating short-circuit breaking capacity, kA:
- at a rated voltage of 380 V 56.
- at a nominal voltage of 660 V 27.
11. Wear resistance of switches:
- total number of cycles is 12,000.
- number of cycles of the VO under a load of 8000.
12. Overall dimensions (width x height x depth), mm 225x400x160.
13. Weight (stationary version), not more than 29 kg, not more.
With electromagnetic drive 35.0 kg, no more.