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七星彩走势图2元彩票网-products-DZ20LE-225/4300 Molded case circuit-breaker
  • product name : DZ20LE-225/4300 Molded case circuit-breaker
  • product brand : LBAJI
  • Place of Origin : CHINA
  • E-mail : [email protected]
  • Online Contact :
Detailed Instruction

Scope of Application

DZ20L series leakage circuit breaker (hereinaften referred to as leakage circuit breaker) is mainly applied to provide protection for power distribution lines of AC50Hz, rated voltage 380V, rated current up to 630A against electrical shock and leakage. It can prevent fire hazard caused by destruction of insulation and earth fault. It can also used to distribute power energy or provide overload & short circuit protection for lines and electrical equipment. Moreover, DZ20L can used for infrequent switching in lines. Besides, derivative products of DZ20L series residual current circuit breaker have leakage alarm function without tripping, which can applied for UPS( uninterruptible power supply).
The products are in conformity with such Standard as GB 14048.2. and IEC60947.2

Ⅲ. Accessory code

Over-current tripping type

Accessory name


No accessory

Shunt release

Auxiliary contact

Under-voltage tripper

Auxiliary contact
shunt release

Auxiliary contact under-voltage tripper

Instantaneous tripper

200

210

220

230

240

270

Complex tripper

300

310

320

330

340

370

Note: 240.340.270.370 are only applicable to 4 pole products.


Ⅳ. Applicable Operation Environment

◆ Ambient temperature: -5℃~+40℃. The average temperature per day should less than 35 degrees Celsius. (For any special requirement over this, please contact the manufacturer) .

◆ Altitude: ≤2000m

◆ The air relative humidity is less than 50% at the highest +40℃ at installation site. Higher RH is allowed at lower temperature. Like the RH can reach to 90% at 25℃. Special measures shall be taken when condensation occurs due to occasional temperature change.

◆ Pollution degree: Class III.

◆ Installation condition

◇ The circuit breaker should be mounted according to installation requirements of operation instruction offered the manufacturer. The upper terminal should be connected with mains side, while the lower terminal with load side. 
Besides, the mounting tilt angle against vertical surface should be less than 5°. Ensure, there is no distinct shake and impact at the installation site. The installation should be away from any invasion of rain or snow.

◇ Installation class: Class III 
◇ The foreign field value of the mounting location (in all directions) should no more five times than that of geomagnetic field.


Ⅴ. Main Parameters and Technical Performance

1.Basic parameters of DZ20L MCCB

Model

Frame size current (Inm)A

Rated voltage
(Un)V

Rated frequency
(Hz)

Poles

Rated current
(In)A

Rated residual current
(I△n)mA

Rated residual non-operating current
(I△no)mA

Residual current operatoin time (s)

DZ20L-160

160

380

50

3P+N
4P

50、63、
80、100、
125、160

50

25

Normal type see Fig 3.

Delay type see Fig 4.

100

50

200

100

DZ20L-250

250

380

50

3P+N
4P

100、125、
160、180、
200、225、250

50

25

100

50

200

100

300

150

DZ20L-400

400

380

50

3P+N
4P

200、250、
315、350、400

100

50

200

100

300

150

500

250

DZ20L-630

630

380

50

3P+N
4P

400、
500、630、

100

50

200

100

300

150

500

250

Note: Adjustable 3 position residual operating current can be chose by users.

  • General type residual current circuit breaker breaking time

Imposed current

I△n

2I△n

5I△n

Breaking time (s)

≤0.2

≤0.1

≤0.04

  • Delay type residual current circuit breaker breaking time

Setting delay time

I△n

5I△n

0.2s

<0.4s

0.1 ~ 0.24s

0.4s

<0.6s

0.2 ~ 0.44s

0.8s

<1.0s

0.4~ 0.84s

  • Rated ultimate short-circuit breaking capacity & rated residual switching on and breaking capacity

Product type

Rated ultimate short-circuit breaking capacity (Icu)

Rated residual switching on and breaking capacity (I△m)

Flashover distance
(mm)


AC380V

AC220V



Effective value kA

COSφ

Effective value kA

COSφ


DZ20L-160

12

0.3

3

0.9

≤60

DZ20L-250

15

0.3

4

0.8

≤60

DZ20L-400

20

0.3

5

0.7

≤80

DZ20L-630

20

0.3

5

0.7

≤80

Note: rated short circuit breaking capacity Ics=0.5Icu.

◆ shunt release:
◇ rated control supply voltage:AC220V、380V,DC24V、110V、220V。
◆ residual current operating characteristics:
◇ under normal working conditions, residual operating current of the circuit breaker is no more than its rating value, but more than its rated residual non-operating current. 
◇ residual current circuit breaker is used as auxiliary power supply for main power. The circuit breaker need to operate normally with the voltage of 0.85~ 1.1Un.
◆ breaking characteristics of over-current tripper:
◇ breaking characteristics of over-current tripper in case of short circuit. (see below table).

◇ breaking characteristics of over-current tripper in case of overload inverse time.

(At +40℃ ambient air temperature, inverse time breaking characteristics of residual current circuit breaker for power distribution when all poles of over-current tripper are energized.)
◆ electric clearance and creep distance: 
Its electric clearance is no less than 5.5mm;creep distance: no less than 9mm.

Inm A

Setting operating current

Ratting accuracy

160、250、400、630

10In

±20%


Test current name

Setting multiple of current

Test time(h)

Initial state

In≤63A

63A

225A

Conventional non-tripping current

1.05

≥1

≥2

≥2

Cold state

Conventional tripping current

1.30

<1

<2

<2

Thermal state

Return current

3.0

Return tme(s)

Cold state

5

8

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