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Disjuntores de circuito moldados caso

Informação básica

Modelo: 121

Descrição do produto


TFHM3 série moldada disjuntores caso

Product Features
TFHM3 Series moulded case circuit breaker, It's applicable circuit of AC 50Hz(or 60Hz),rated insulation voltage 660V, rated operating voltage under AC 660V, 250V(DC), rated operating current 10A800A,for distribute energy of electricity and infrequent making and breaking circuit. In normal conditions, the MCCB rated current under 400A they are provided with the function of the protection against overload and short circuit and under voltage. The MCCB complies with standard of IEC947-2, GB14048.2, and GB14048.4 and so on.


Motion characteristic
The thermodynamic release of a circuit breaker provides the feature of inverse timedelay, while the magnetic release is the
instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breakers).


Table2

Rated current of release(A)

Thermodynamic Release
(ambient templand +40 marine +45)

Operational current of
magnetic release(A)

1.05In(cold state)
inoperative time(h)

1.30In(heat state)
operative time(h)

In≤ 63

≥1

< 1

10-50In±20%

63<In≤ 250

≥2

< 2

10In±20%
5-10In±20%

250<In≤ 800

≥2

< 2

Tabela3

Rated current of release(A)

Thermodynamic Release
(ambient templand +40 marine +45)

Operational current of
magnetic release(A)

1.0In(cold state)
inoperative time(h)

1.20In(heat state)
operative time(h)

1.50In(heat state)
operative time(h)

7.2In(cold state)
operative time(h)

12.5≤In≤ 400

2

2

≤ 4min

2s<Tp≤ 10s

12In±20%


Grupo de Produto : Disjuntores e contatores

Rotation handle operated mechanism
The rotation handle operated mechanism used in AM3 series MCCB ,meet the requirements(drawer chambers, distributor panel and power supply boxes )of set switchgear It can ensures the safety of equipment when the MCCB are close .i.e. it with panel door with handle in ON position ,may turn the Red release button in Rotation handle pedestal side




Shown in above fig. Hinge of panel door to handle centre R and breaker cover to cabinet panel H is minimum distances.
Motor operators
Motor operator are used to make or break the MCCB automatically in the distance
Lock device
&#8226; With padlock front panel type is used by MCCB of fumish operating mechanism. (Applicable MCCB type: AM3-250~AM3-800) (MCCB) is "OFF" position when the locked device operated may avoid making of MCCB. Its ration three unit padlock of diameter 6mm (user provide for oneself). It's selection under following
&#8226; One "OFF" position lock Two or more than two, "OFF" position lock of MCCB (MCCB group use the same kind key).


Name of accessories

without accessories

alarm contact

shunt release

sht and alt

auxilary contact

aux and alt

undervoltage release

instantaneous release(Mag)

200

208

210

218

220

228

230

thermo-mag release

300

308

310

318

320

328

330

Name of accessories

UVT and alt

sht and aux

sht aux and alt

two auxilary contact

aux and one aux

aux and one alt

unx and one aux and alt

instantaneous release(Mag)

238

240

248

260

268

270

278

thermo-mag release

338

340

348

360

368

370

378



* Alt, ou seja, alarme contato Sht i.e.Shunt lançamento UVT ou seja, menos liberação de tensão AUX ou seja, Auxilarycontact
* Duas contato auxiliar e alarme contato somente fornecimento pelo inm 630A e 800A


Ambiente de trabalho

O MCCB pode confiantemente ser operado sob as seguintes condições
1. a altitude não superior a 2000m;
2. a temperatura ambiente é de + 40oC para - 5oC;
3. ambiente libertando-se do perigo explosivo e ar ou poeira que pode causar corrosão do metal ou a fraqueza do isolamento;
4. ambiente libertando da erosão da chuva ou neve;
5. o grau de poluição 3;
6. categoria de instalação III.

Dimensões do esboço e instalação


Frente a conexão do painel de volta a conexão do painel


Conexão do painel frontal conexão plug-in plug-in do painel frontal a conexão


Plug-in conexão volta painel conexão