Professional China Leakage circuit breaker - DAM1L Series Earth Leakage protection Circuit Breaker (ELCB) – DaDa

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

Earth-Leakage Circuit Breakers(ELCB)
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
(I△m)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			√			√
	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)
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
(I△m)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			√				√
	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)