Circuit breaker А3731

SALE AND MANUFACTURE OF AUTOMATIC SWITCHES А3731B 400A, А3731U05, А3731BHL3, А3731БBR А3731BT3, А3731F, А3731UU5- FOR RATED CURRENTS UP TO 400 A (A3731F to 630A), WITH ELECTROMAGNETIC COUPLINGS. 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 A3731. Warranty 2 years! Delivery to any country in the world!

TECHNICAL DESCRIPTION: A3731 circuit breakers are designed to conduct current in normal mode and to protect against overloads of unacceptable duration, short circuits and unacceptable voltage drops, and for infrequent (up to 30 times a day) operational disconnections of electrical circuits with a rated voltage of up to 660 V ( VA3730U to 1140V) of alternating current of frequency 50 and 60 Hz and up to 440 V of direct current.

AC-3731 circuit breakers can also be used for protection and infrequent direct starting of induction motors in the category of AC-3 applications.

Switches A 3731 are produced with thermal and 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 A-3731 are produced in stationary version - front, rear, combined connections and in retractable design.

Such climatic designs-

for a moderate climate - A3731BU3. A3731FU

for cold climate - A3731BHL3

for the tropical climate - A3731BT3, A3731BTZ

for river transport- А3731БР

for the mining and processing industry - A3731UU5, A3731U05, A3731UО5

Technical characteristics of switches A 3731:

1. Rated current, A 400

2. Application category A.

3. The number of poles 2.

4. Settings for the current tripping of electromagnetic releases, A 1200; 1600; 2000; 2500; 3200; 4000; 5000; 6300 and others.

5. Rated operating short-circuit breaking capacity, kA:

- at a rated voltage of 380 V 50.

- at a nominal voltage of 660 V 27.

6. Wear-resistant switches:

- total number of cycles is 12,000.

- number of cycles of the VO under a load of 8000.

7. Overall dimensions (width x height x depth), mm 225х400х160.

8. Weight (stationary version), not more than 16.7 kg. With electromagnetic drive 22.8 kg.