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Earth Leakage Protection Circuit Breaker

DAM1L series Earth Leakage protection circuit breaker (ELCB) 4P 400V/415V Earth leakage circuit breaker high quality with CE,CB,SEMKO certificate Introduction DAM1L series residual current (leakage) circuit breaker (hereinafter referred to as circuit breaker) is a new series of residual current...

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DAM1L series Earth Leakage protection circuit breaker (ELCB)

4P 400V/415V Earth leakage circuit breaker high quality with CE,CB,SEMKO certificate 

Introduction

DAM1L series residual current (leakage) circuit breaker (hereinafter referred to as circuit breaker) is a new series of residual current (leakage) successfully developed by using international standard design and advanced manufacturing technology.

Protected moulded case type circuit breaker.

The rated insulation voltage of circuit breakers of this series is 400V (Inm is less than 160A) and 690V (Inm is more than 250A), which is mainly used for ac 50Hz and rated In a power distribution network with a current of 10A~500A and a rated working voltage of 380V/400V, it is used to distribute electric energy and protect the overload and short circuit of lines and power equipment.

Under normal conditions,It can also be used for infrequent switching of lines.

This circuit breaker also has the following protection:

·It provides protection for fire hazards caused by grounding fault current that cannot be detected due to overcurrent protection.

·Provide protection against the danger of increasing ground voltage due to insulation damage;

·Circuit breakers with rated residual action current not exceeding 30mA can be used for personal contact protection.

·Circuit breakers with rated current of 500A and below can also be used for infrequent start, break off during operation and overload and short circuit protection of squirrel cage motors.

DAM1L series circuit breakers can be equipped with electric accessories and mechanical accessories for various purposes, such as separately excited tripping device, auxiliary contact, alarm contact and rotating handle operating mechanism.

This series of circuit breakers are widely used in construction, transportation, tunnel, residence, etc.The delay type in this series of circuit breakers is used for branch lines 

Distribution of roads;Adjustable type is used to adjust the residual action current or disconnection time on site.

Advantages

.Range:10A to 500A(AC)

.integral structure, small volume, high breaking capacity, safe and reliable.

.Adjustable magnetic setting(0.8-1times)In.

.Push to trip button provision.

.Separate main and arcing contacts

.Can be adjusted the residual action current or disconnection time according to the actual use.

.Strong anti-interference ability.

.Wide range of accessories.

The working power of the residual current protection circuit of this series of circuit breakers is supplied by the multi-phase power supply (the working power of the protection circuit of early products is supplied by the single-phase power supply)the residual current protection circuit of the device can still operate normally.When the operating power voltage of the circuit breaker's residual current protection circuit is reduced to 50V, the circuit breaker's residual current protection circuit can still work normally.(I coherence n=30mA)

This series of circuit breakers are classified into B type (i.e., basic breaking capacity) (Inm less than 100), S type (i.e., standard breaking capacity) and H type (i.e High score breaking capacity (Inm > 160) can be used in different situations.

The main circuit of a circuit breaker is connected in many ways:

-Piston front connection

-Terminal extension plate front connection

-The screw connection at the rear of the piston plate

Earth-Leakage Circuit Breakers:

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Residual current circuit breaker basic parameters

COSφ

Rated current of remnant motion In
(mA)

Rated current of remnant no-motion Ino
(mA)

Max-Breaking time (S)

0.2

100,300,500

50,150,250

0.05,0.5, 0.8


Rated residual operating current(mA)

Rated no tripping current value.Ino(mA)

Residual  current value range.(mA)0.5x(In+Ino)±0.2In

30

15mA

18mA-27mA

100

50mA

60mA-90mA

300

150mA

180mA-270mA

500

250mA

300mA-450mA

1000

500mA

600mA-900mA

Earth-Leakage Circuit Breakers(ELCB)

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Model

DAM1-125L

DAM1-160L

Breaking Capacity Code

B

N

S

B

N

S

Rated Current of Frame size- Inm (A)

125A

160A

Rated Current-In(40,50 or 55) (A)

10 - 12,5 - 16 - 20 - 25 - 32(30) - 40 - 50 - 63(60) - 80 - 100 - 125A

10- 12,5-16-20 - 25 - 32 - 40  - 50 - 63 - 80 - 100 -125 - 160(150)A

Ui (V)

690V

690V

Ue (V)

400V

400/415V

Number of Pole

4P

4P

Icu (KA)

25

35

50

25

35

50

Ics(KA)

12.5

17.5

37.5

12.5

26.25

37.5

Icm(peak)/cos ф (KA)

40/0.3

73.5/0.25

105/0.25

41/0.3

73.5/0.25

110/0.25

(Im)KA/cosф

9/0.5

19/0.5

Residual current threshold(mA)

100-300-500

100-300-500

Time delay(ms)

50-500-800

50-500-800

Uimp  (V)

10000

8000

Dielectric Propery (V)

2500

3000

lonization distance (mm)

≤30/0

≤30/0

Endurance

Total Cycles

8000

8000

Electrical Life

1000

1000

Mechanical Life

7000

7000

Category (EN 60947-2/IEC 60947-2)

Main circuit

A/0

A/0

Auxiliary circuit

AC-15

AC-15

Under Voltage Release

Shunt Release

Auxiliary Contact

Alarm Contact

Auxiliary Contact and Alarm Contact

Handle Operation Mechanism

Electrical Operastion Mechanism

Terminal cover

 

 

Phase seperator

 

 

1.jpg

W (mm)

3P

-

-

4P

101

120

L (mm)

3P

-

-

4P

155

120

H (mm)

3P

-

-

4P

70

70

Weight

Fixed version 3P/4P

-

-

Plug-in version 3P/4P

-

-

Draw out version 3P/4P

-

-


Earth-Leakage Circuit Breakers(ELCB)

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Model

DAM1-250L

DAM1-400L

Breaking Capacity Code

N

S

H

G

N

S

H

G

Rated Current of Frame size- Inm (A)

250A

400A

Rated Current-In(40,50 or 55) (A)

63 - 80-100-125 - 160

(180) -  200(225) - 250

(320)A

250 - 315 (350)- 400 - 500A

Ui (V)

690V

690V

Ue (V)

400/415V

400/415V

Number of Pole

4P

4P

Icu (KA)

35

50

65

85

35

50

70

85

Ics(KA)

26.25

37.5

48.75

51

26.25

37.5

52.5

52.5

Icm(peak)/cos ф (KA)

77/0.25

114/0.25

143/0.2

178/0.2

70/0.25

110/0.25

154/0.2

187/0.2

(Im)KA/cosф

12/0.3

19/0.5

Residual current threshold(mA)

100-300-500

100-300-500

Time delay(ms)

50-500-800

50-500-800

Uimp  (V)

8000

8000

Dielectric Propery (V)

3000

3000

lonization distance (mm)

≤30/0※

≤60/0※

Endurance

Total Cycles

8000

5000

Electrical Life

1000

1000

Mechanical Life

7000

4000

Category (EN 60947-2/IEC 60947-2)

Main circuit

A/B

A/B

Auxiliary circuit

AC-15

AC-15

Under Voltage Release

Shunt Release

Auxiliary Contact

Alarm Contact

Auxiliary Contact and Alarm Contact

Handle Operation Mechanism

Electrical Operation Mechanism

Terminal cover

 

 

Phase seperator

 

 

1.jpg

W (mm)

3P

-

-

4P

140

184

L (mm)

3P

-

-

4P

210

254

H (mm)

3P

-

-

4P

103.5

103.5

Weight

Fixed version 3P/4P

-

41.5/5.5

5.1/7.1

Plug-in version 3P/4P

-

4.6/6

6.5/8.5

Draw out version 3P/4P

-

5/6.4

6.5/8.7

·Icu:O-t-CO test(O:Open maneuver,CO:Close-Open maneuver,t:Waiting duration)

·Ics:O-t-CO-t-CO test(O:open maneuver,CO:Close-Open maneuver,t:Waiting duration)

Working principle

The main contact of the molded case circuit breaker is manual manipulation or electric closing. After the main contact is closed, the free release mechanism locks the main contact into the closing position. The over current trip coil and the thermal trip element are connected in series with the main circuit. The under voltage release coil and the power supply are connected in parallel.

Configuration

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Connecting busbars

Phase separators

Set of screws for panel mounting

Set for connecting external conductors

Auxiliary devices for DAM1 MCCB

 

image024.jpg

1 - Power circuit breaker 
2 - Mounting panel (base) for plug-in/draw-out) option 
3 - Side panels for draw-out option 
4 – Phase separators 
5 – Connecting busbars 
6 – Plug-in contacts 
7 – Blocking unit

8 – Terminal cover 
9 – Casing cover 
10 – Top cover 
11 - Rotary handle operating mechanism
12 – Electrical operating mechanism
13 - Shunt release/under voltage release
14 – Auxiliary/Alarm contacts

 High-strength cartons, pallet protection, good for long-distance export transport

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Outline dimension

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Protective curve

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Why choose us?

1.Our develop history


2.Circuit breaker range 

3.Marketing customer

4.Research&Development

5.Patent protected

5.Honors from Government.

6. certification

6.Workshop

FAQ

Q: How long is your delivery time?

A: Generally it will take 25 days upon receipt of order confirmation.If it is urgent order,we’ll negotiate to plug your order first but its better inform us as earlier as you can. 

Q: Do you provide samples ? is it free or extra ?

A: sorry,the sample and freight cannot be for free; After you order it, we can charge off from mass orders.

Q: What is your terms of payment ?

A: We accept TT,30% deposit and 70% balance against copy of BL

B. L/C at sight

Q: Can you accept OEM our brand ?

A: We accept OEM your brand, but it depends on your order quantity.

Q:What is your main market?Turnover?

A:Our main market is middle east,Europe,and turnover is roughly 20 million

USD per year.

Q:Do you have interest to do our own design items?

A:Absolutely!We have big interest!

Q:How many staffs in your company?

A:Roughly 300 in workshop, and 10 inspectors.

If you have any further questions, please let us know.


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