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Leakage circuit breakers
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Products

DLM-225L/3300 series plastic shell circuit breaker

一、summarize

The series of plastic-cased circuit breakers (hereinafter referred to as circuit breakers) are new types of circuit breakers that have been developed and developed using international advanced design and manufacturing technologies. They are classified into L-types according to their rated extreme short-circuit breaking capacity (Icu) levels. ), M type (higher breaking type), H type (high breaking type) three types. This product has the characteristics of small size, high breaking current, short arcing, and vibration resistance. It is an ideal product for land and ships. Its rated insulation voltage is 690v (500V for DLM-63). It is suitable for frequency conversion and motor infrequent startup in circuits with AC 50Hz and rated operating voltage of 400V and below. Circuit breakers are overloaded, short-circuited, and under-voltage protected • Can protect circuits and power equipment from damage. The circuit breaker can be vertical (ie, vertical) or horizontal (ie, horizontal).
This product meets the GBl4048.2 standard

二、the product model and meaning
Note:. 1. There is no code for the circuit breaker for power distribution; the circuit breaker for protecting the motor is 2. Express
2, handle directly without code; electric operation with P; rotation handle with Z

三、classification
1, according to overcurrent release current rating: DLM-63, for (6), 10,16,20,25,32,40,50,63 9; DLM-IOO for (10), 16,20 , 25, 32, 40, 50, 63, 80, 100A ten; DLM-225 is seven levels of 100,125,140,160,180,200,225A; DLM-400 is 225,250,315,350,400A Five; DLM-630 is 400,500,630A three. The DLM-800 is rated 700, 800 secondary.
Note: The 6A specification is only electromagnetic (instantaneous); it is not recommended.
According to the wiring method is divided into: board front wiring, board rear wiring, plug-in three.
According to over-current release type is divided into: thermal-electromagnetic (double) type, electromagnetic (instantaneous) type two.
According to the attachments, it is divided into two types: with or without attachments; the attachments are divided into internal devices and external devices: internal devices include shunt release, undervoltage release, auxiliary contacts, and alarm contacts. , external device has rotating handle manipulator
Structure, electric operating mechanism and so on.

四、normal conditions of use
The altitude does not exceed 2000m;
2, the surrounding medium temperature is not higher than +40 °C (for marine products +45 °C) and not lower than -5 °C (-25 °C, please specify);
3, can withstand the impact of moist air;
4, can withstand salt spray, oil mist shadow;
5, can withstand the effects of mold;
6. The maximum inclination is 22.5. ;
7. It can work reliably when the ship is in normal vibration;
8. In areas where there is no danger of explosion, and the medium is free from corrosion of metal and destruction of insulating gases and conductive dust;
9, where there is no rain and snow.

五、 Main technical parameters
Circuit breaker thermal release has inverse time characteristics; electromagnetic tripping instantaneous action characteristics are shown in Table 2 (for power distribution);
2, rated short-circuit breaking capacity in Table 3;
3, the rated value of auxiliary contacts and alarm contacts are shown in Table 4;
4. When the applied voltage of the shunt release is between 70% and 110% of the rated control power supply voltage, it can reliably break the circuit breaker.
5. When the power supply voltage drops to within 70%~35% of the undervoltage tripping to the rated working voltage, the undervoltage release canReliable breaking of the circuit breaker, when the power supply voltage is less than 35% of the rated operating voltage of the undervoltage release, the undervoltage release prevents the circuit breaker from closing; when the voltage is higher than the rated working voltage of the undervoltage release 85 At the time of %, the undervoltage release guarantees reliable circuit breaker closure.


accessory name

Attachment code

Release method

Electromagnetic typer code

Retry release

NO

200

300

Alarm contact

208

308

Shunt trip 0

210

310

Auxiliary contact

220

320

Undervoltage release

230

330

Shunt tripping, auxiliary contacts

240

340

Shunt trip 0, under voltage release

250

350

Two auxiliary contacts

260

360

Auxiliary contact, undervoltage trip 0

270

370

Shunt release, alarm contacts

218

318

Help contacts, alarm contacts

228

328

Undervoltage release, alarm contacts

238

338

Shunt trip, auxiliary contacts, alarm contacts

248

348

Two auxiliary contacts and alarm contacts

268

368

Help contact, under voltage release, alarm contact

278

378


Release rated current(A)

Thermal release (ambient temperature+40℃）

 

1．05ln(cold) inactive time（h）

1.03ln(hot) action time（h）

Electromagnetic release action current（A）

10≤In≤63

≥1

＜1

 

63≤In≤100

≥2

＜2

10In±20％

 

100≤In≤63

≥2

＜2

51n±20％和10I n±20％

 

Note: The motor protection circuit breaker 1n does not operate for 2 hours, the operating current is 1.20Ih (hot state), the operating time is 2 hours, and the electromagnetic tripping current is 12±In20%.

Tripping seven rated current（9）

                       Switching capacity

Arc distance（mm）

Rated limit short-circuit breaking capacity Icu（kA）

Rated operation short circuit breaking capacity Icu(kA)

DLM-63L

35

22

 

DLM-63M

50

35

 

DLM-100L

35

22

 

DLM-100M

50

35

≤50

DLM-100H

85

50

 

DLM-225L

35

22

 

DLM-225M

50

35

 

DLM-225H

85

50

 

DLM-400L

50

35

≤100

DLM-400M

65

42

 

DLM-630L

50

35

 

DLM-630M

65

42

 

DLM-800L

50

35

 

DLM-800M

65

42

 

Note: arcing distance includes horizontal loading and vertical loading

classification

Frame rated current

Convention heating current Ith（A）

Rated operating current at 380V AC Ie（A）

Auxiliary contact

225AAnd below

3

0.30

400AAnd below

6

1

Alarm contact

400AAnd below

1

0.30



六、shape and installation size
七、ordering instructions
1, product model, name, 2 poles, 3 rated current, 4 order quantity.

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