Switches ВА51-25-3211 ( 3.15 A, with the block contacts )

Sell circuit breakers ВА51-25-3211 ( 3.15 A, with the block contacts ).

DATASHEET

Switches automatic are designed for conducting current in normal operation electric

the circuits voltage up to 660 V AC frequency 50, 60 Hz; or to protect the electrical circuits from

currents overload and short-circuit currents, and also for operative inclusions and switching-off the specified circuits at up to 30 inclusions in Chas.

 

 

Structure legend ВА51_25_3[*][*][*]10[*][*][*][*][*]:

 

ВА51 — series;

25 — nominal current, a;

3 — the number of poles and maximum release current;

[*] — the maximum performance of current release

(2 – release in the fault current zone;

4 – release in the zone of overload currents and short circuit);

[*][*] — the existence of releasers and free contacts (00 – no

additional releasers and free contacts;

11 – free contacts);

1 — hand drive, stationary design;

0 — additional mechanisms do not exist;

[*] — the presence of adjustment of the nominal current thermal

release (P – adjust; 0 – no adjustment);

[*][*] — degree of protection from environmental influences and

contact with live parts (00 – ІР00 –

clamps for connection of external conductors and ІР30 –

shell switch; 20 – IP20 – clips

joining the external conductors and ІР30 – shell

switch; 54 – IP54 – breakers in the shell);

[*][*] — climatic modification and placement category according to GOST

15150$69: UHL3, T3 in the shell degree of protection ІР00; UHL2, T2

in shell protection degree IP54.

 

Design features

 

Switch consists of the following main components: the base, the contact system, connecting

clip, mechanism shunt trip, handle, lid, thermal release, electromagnetic

breakers, arc chambers and other auxiliary parts.

Mechanism shunt trip allows free disengagement, torque enable and switch-off

tion of the contact system. It is combined with a mechanism for adjusting the actuation current of thermal release.

Contact the system consists of movable and stationary contacts and provides a single gap current in each phase. The arcing chamber is composed of fiberboard sidewalls and dennyh plates.

Free the contacts are placed in the console, which is connected to the switch the side.

Additional plastic shell execution IP54 for three-pole switches has to input conductors four threaded holes.