Circuit breaker A3721BU3, A3721BT3

We sell and manufacture automatic circuit breakers A3721B, A3721, A3721BU3, A 3721, A-3721, A3721UU5, A3721U05, A3721BHL3, A3721BR, A3721BT3, A3721BU3, A 3721BU-3, A 3721BU3, A-3721BU3, A 3721BR, A3721UO5 rated current 250A, 160A, 250 A 440DC, 380AC, 220DC, 550DC, 600DC, 380AC, 660AC with magnetic release. The quality and price in Ukraine on the A 3721 250A/2400A circuit breakers are the best. Certified. Export. Service. Automatic switches A 3721BU3 250A/1500A and A 3721UU5 are used with great success in the mining industry of Ukraine, Moldova, Kazakhstan, Latvia, Estonia, Lithuania, India, Mongolia, Georgia, Vietnam, Korea, Qatar, Oman, Romania, Hungary, Bulgaria, Armenia, Ethiopia, Algeria, Iraq, Uzbekistan, Azerbaijan, Tajikistan, Turkey, Ethiopia, Sudan, Egypt and Czech Republic, Greece, Turkmenistan, Montenegro, Slovenia, Slovakia, Serbia, Bosnia and Herzegovina, Poland, as well as in the countries of near and far abroad - in Europe, Africa, South Africa, South America, the Middle East, Asia. For wear resistance, they have no competitors, the A3721, A3721yy5 rifle serves 15–20 years! Three year warranty.

TECHNICAL DESCRIPTION: A3721 circuit breakers 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 (up to 30 times a day) operational tripping of electrical circuits with a nominal voltage of up to 660 V, A3720U to 1140V AC frequency of 50 and 60 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 are manufactured with electromagnetic maximum current releases, only with electromagnetic maximum current releases and without maximum current releases.

Switches can be equipped with an independent release, a zero-voltage release, free contacts and an electromagnetic drive.

Switches A3721 are produced in stationary version - front, rear, combined connections and in retractable design.

Such climatic designs-

for moderate climate - A3721BU3, A3721FU3

for cold climate - A3721BHL3

for the tropical climate - A3721BT3

for river transport- A3721BR

for mining and processing industry - A3721UU5

Technical characteristics of the switches:

1. Rated current, A 250.

2. The number of poles 2.

3. Rated currents of thermal releases, A 160; 200; 250.

4. -

5. Settings for the current tripping of electromagnetic maximum current releases, A 2500; 800; 960; 1500; 2000; 2400.

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) 7.0 kg. With electromagnetic drive - 12.0 kg.