Dam2e-400m Electronic MCCB

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Installation: Fixed
• Structure: MCCB
• Poles Number: 3
• Model NO.: DAM2E-400M
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• HS Code: 85362000
• Production Capacity: 10000PCS/Month

Product Description

Application

DAM2 (CM1) series the rated insulation voltage of the circuit breaker is 800V,it is suitable for the distribution network of AC 50Hz / 60Hz, rated working voltage of 690V and rated current of 1250A, to distribute power and protect circuit and power equipment from being damaged caused by overload , short-circuit, under-voltage and other fault. Also for protection infrequent conversion of the circuits and infrequent start of motor and overload, short circuit, under voltage. DAM2 circuit breaker can be mounted vertically (upright) or horizontally (transverse). DAM2 MCCB is suitable for isolation and the symbol is " ". DAM2 MCCB meets the standard: IEC60947-2 "low-voltage switchgear and control equipment, Part 2: circuit breakers."

Normal operating conditions

1.Ambient air temperature: -5ºC~+40ºC, and average temperature in 24h is below +35ºC.
2.Altitude: The altitude of the installation site is not more than 2000m.
3.Atmospheric conditions: The air relative humidity in the highest temperature +40ºC is not more than 50%; In the low temperature can have higher relative humidity. The maximum average relative humidity is 90%, while the average monthly minimum temperature is +25ºC, and consider the temperature changes in product on the surface of the gel.
4.Pollution Degree: 3.

Selection of instructions

According to the pole, it classifies four types:
Type A: N-pole without over-current release components, and N-pole has been connected all along, and does not act with other three poles to turn on or off;
B-type: N-pole without over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);
Type C: N-pole fixed with over-current release components, and N-pole could act with other three poles (N-pole turn-on prior to turn-off);

Classification according to rated current of over-current release:
DAM2-63 MCCB has nine: 6,10,16,20,25,32,40,50,63 A;
DAM2-100 MCCB has nine: 16,20,25,32,40,50,63,80,100 A;
DAM2-250 MCCB has seven: 100,125,140,160,180,200,225 ,250A;
DAM2-400 MCCB has five: 225,250,315,350,400 A;
DAM2-630 MCCB has three: 400,500,630 A;
DAM2-800 MCCB has three: 630,700,800A;
DAM2-1250 MCCB has three: 800,1000,1250A.
Remark: 6A only has electromagnetic (instantaneous) type, is not recommended specifications.
According to the wiring method: wiring in front of board, wiring on back of board, insertion type of the board.
According to over-current release pattern: thermodynamic-electromagnetic (double) type, electromagnetic (instantaneous) type.
According to the outfit, it has two types: with or without outfit.
The outfit include inner accessories and outside accessories: The inner accessories have shunt release, under-voltage release, auxiliary contact and alarm contact. The outside accessories are turning handle operation mechanism, power-driven operation mechanism and so on.
According to the breaking capacity: L-standard breaking type; M-second high breaking type; H-high breaking type

Technical parameters

1, Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, DAM2-1250 is 7In±20%; Instantaneous action characteristic set value of the circuit breaker for motor protection is 12In ± 20%.
2, The rated value of the circuit breaker in Table 2.
3, In the ambient temperature of +40ºC, the circuit breaker for distribution over-current release action characteristics shown in Table 3, the circuit breaker for motor protection over-current release action characteristics shown in Table 4.

Rated value of the circuit break

Introduction

DAM2E CM1 Electronic adjustable moulded case circuit breaker has three protection function, the circuit breaker with utilization category B connected with other short-circuit protection device in the same circuit has completely optional under short circuit circumstance; With five tripping features, the user can set the equipment through the shunt release according to the load current, electronic shunt release is powered by circuit breaker itself; current signal and control power is from the circle circuit transformer installed in the circuit breaker; With fire protection shunt release for alarming but not trip, when the load current is overloaded, the circuit breaker does not trip, and output the passive contact, driving the corresponding alarm device; The dimensions and specifications are the same as those of DAM2 CM1 series MCCB, the installation can be changed.

 

Application

1. The elevation of the installation site is not more than 2000m.
2. The ambient temperature is not more than +40ºC, and the average temperature within 24h is not more than +35ºC, the lower limit of the ambient temperature is -5ºC.
3. When the max temperature is +40ºC, the relative humidity of air is not more than 50%, can allow a higher relative humidity at a lower temperature, such as 90% at 20ºC, special measures should be taken for the condensation produced occasionally on the product due to temperature changes.
4. The pollution degree is 3.
5. The circuit breaker installation of main circuit category is class III, the installation category of auxiliary circuit and control circuit not connect to the main circuit is II.
6. Use category is A or B.

 

Important information

1) No code for circuit breaker for distribution, 2 for circuit breaker for protecting motor.
2) No code for handle direct operation, P for electric operation, Z for the rotating handle.
2. Classification
A. According to the rated limit short-circuit breaking capacity, divided into standard (S), high breaking (H);
B. According to the mode of connection, divided into three types: front connection, rear connection and plug-in;
C. According to the pole, divided into three-poles and four-poles. The N-phase of the 4-pole products is not equipped with the overcurrent release, and the N-phase is on-off with the other phase;
D. According to the accessory device, divided into with accessory device and without accessory device: accessory device is divided into internal and external devices: the internal device has shunt release, under voltage release, auxiliary contact, alarm contact, the external device has rotating handle operating mechanism, electric operation mechanism etc..

 

Accessory Name	Accessory Code	Tripping Mode
-	300	Electric Tripping Unit
Alarm Contact	308
Shunt Release	310
Auxiliary Contact	320
Undervoltage Release	330
Shunt Release + Auxiliary Contact	340
Shunt Release + Undervoltage Release	350
Two Groups of Auxiliary Contacts	360
Auxiliary Contact + Undervoltage Release	370
Alarm Contact + Shunt Release	318
Alarm Contact + Auxiliary Contact	328
Undervoltage Release + Alarm Contact	338
Auxiliary Contact + Alarm Contact + Shunt Release	348
Two Groups of Auxiliary Contacts + Alarm Contact	368
Undervoltage Release + Auxiliary Contact + Alarm Contact	378

Note: 1. DAM2E-100, 225 only have accessories of 308, 310, 320, 330, 328;
2. DAM2E-400 only have 3-pole accessories of 308, 310, 320, 330, 328;
3. DAM2E-400 only have no 4-pole accessories of 350, 318, 338, 348, 378.

in the setting, the dial switch must be set in place!

1. Adjust overload long delay action current Ir1, according to the different circuit breaker rated current, 4-10 files can be adjusted;
2. Adjust long delay action time t1, 4 files can be adjusted;
3. Adjust short-circuit short-delay action current Ir2, 9 files can be adjusted;
4. Adjust short delay action time t2, 4 files can be adjusted;
5. Adjust short-circuit instantaneous action current Ir3 action, 9 files can be adjusted;
6. Adjust pre-alarm action current Ir0, 7 files can be adjusted.

Technical parameters

The setting range of intelligent controller is shown in the table

Setting Project		Setting Range
Setting value of overload long delay	Current setting value lr1	(30~100)A,(100~250)A,(200~400)A,(400~630)A,(630~800)A,(800~1250)A
	Time setting value t1	(12,60,80,100)s
Setting value of short circuit and short delay	Current setting value lr2	(2~12)In
	Time setting value t2	(0.06, 0.1, 0.2, 0.3)s
Setting value of instantaneous short circuit	Current setting value lr3	(4~14)In

The main technical data of circuit breaker are shown in table

Model		DAM2E-100		DAM2E-250		DAM2E-400		DAM2E-630		DAM2E-800		DAM2E-1250
Frame Current Inm(A)		100		250		400		630		800		1250
Breaking Capacity		L	M	L	M	L	M	M	H	M	H	H
Rated Current In(A)		63,80,100		225,250		300,400		500,630		700,800		1000,1250
Pole		3,4	3,4	3,4	3,4	3,4	3,4	3,4	3,4	3,4	3,4	3,4
Rated Operational Voltage Ue(V)		AC400
Rated Insulation Voltage Ui(V)		800
Rated Impulse Withstand Voltage Uimp(V)		8000
Rated limit short circuit breaking capacity Icu(kA)		50	85	50	85	65	100	65	100	65	100	80
Rated running short circuit breaking capability Ics(kA)		35	50	35	50	42	65	42	62	42	62	50
Rated short-time withstand current Icw/0.5s(kA)		-		-		5		8		10		15/1S
Usage Category		A		A		B		B		B		B
Flashover Distance (mm)		≤50		≤50		≤100		≤100		≤100
Operating Performance	Power-on (Times)	1500		1000		1000		500		500		500
	Power-off (Times)	8500		7000		4000		3000		3000		3000

Characteristics of release

a. Characteristics of Electric Trip Unit
With overload long-delay inverse time, short-circuit short-delay inverse time, short-circuit short delay time limit, short-circuit instantaneous action and other protection features, the protection characteristics can be set up by the users.
b. Overload long delay inverse time protection action characteristics in Table 4.
c. Short-circuit short-delay protection action characteristics in Table 5.
d. Short-circuit instantaneous protection action characteristics in Table 6.

Controller Types	Basic type		Intelligent communication type, programming communication type, liquid crystal type
Current	Action Time
1.05lr1	No action within 2 hours
1.3lr1	≤1h action
2lr1	Inm=100A, 250A Setting time t1(s)	t1=(12, 60, 80, 100)s	12s-100s(most progress 1s)
	Inm=400A, 630A, 800A Setting time t1(s)	t1=(12, 60, 80, 100)s	12s-100s(most progress 1s)
Thermal Memory	30min, can be cleared after power off (this function is optional function in intelligent communication type and programming communication type)

1. Action time I²t1 = (2Ir1) ²t1 (1.2Ir1≤I <ir2);
2. Action time tolerance is ± 20%;
3. Returnable time is not less than 70% action time.

Short delay overcurrent protection characteristics

Current	Action Time
Ir2≤I<1.5Ir2	Inverse Time		I²t2=(1.5Ir2)²t2
1.5Ir2≤I	Definite time	Setting time t2(s)	0.06	0.1	0.2	0.3
		Tolerance (s)	±0.02	±0.03	±0.04	±0.06
		Returnable time (s)				0.21

Note: Inverse time action time tolerance is ± 20%.

Short-circuit instantaneous protection action characteristics

Rated Current	100, 225(250)	400, 630	800
Setting Current	Ir3=4, 6, 7, 8, 10, 11, 12, 13, 14	Ir3=4, 6, 7, 8, 10, 11, 12, 13, 14	Ir3=4, 5, 6, 7, 8, 9, 10, 11, 12
Operation Characteristics	I≤0.85Ir3 non-operation I≥1.15Ir3 operatino

Technical data of accessory device

a. Rated values of auxiliary contacts and alarm contacts are shown in table

 

Type	Frame Rated Current Inm(A)	Conventional Thermal Current Ith(A)	Rated Operational Current Ie(A)
			AC400V	DC220V
Auxiliary Contact	Inm≤400	3	0.3	0.15
	Inm≥400	3	0.4	0.15
Alarm Contact	100≤Inm≤800	3	0.3	0.15

b. The rated control power supply voltage (Us) and rated operating voltage (Ue) of the control circuit release and electric mechanism are shown in Table 8

Type		Rated Voltage (V)
		AC50Hz		DC
Release	Shunt Release	Us	220/380	110,220
	Undervoltage Release	Ue	220/380	-
Electric Mechanism		Us	220/380	110,220

c. When the applied voltage of the shunt release is between 70%~100% of the rated power voltage, the circuit breaker should be reliably broken.
d. When the power voltage drops to 70% ~ 35% of the rated voltage of the undervoltage release, the undervoltage release can reliably break the circuit breaker; When the power voltage is lower than 35% rated voltage of the undervoltage release, the undervoltage release can prevent the circuit breaker from closing; When the power voltage is higher than 85% rated voltage of the undervoltage release, the undervoltage release can ensure the reliable closing of the circuit breaker.
e. Electric operating mechanism at the rated frequency, between 85% ~ 110% power voltage, the circuit breaker can be reliably closed.

Outline and Installation Dimensions

 

1. The dimensions are shown in figure 3~figure 6 and the table

(1) Dimensions of front connection see Figure 3 (X-X, Y-Y is the center of 3P circuit breaker)

Model		DAM2E-100	DAM2E-250	DAM2E-400	DAM2E-630	DAM2E-800
Front Connection	W	92	107	150		210
	W1	60	70	96		140
	L	150	165	257		280
	L1	100	132	220		240
	L2	132	144	244		243
	H	93	90	107		116
	H1	112	110	147		155
	H2	29	24	38		46
	H3	12	5	9.5		15
	H4	4	4	6.5		5
	E	55	65	92		83
	F	25	25	68		68
	G	18	22	30		44
	W2	122	142	198		280
	W3	90	105	144		210
	M1	M8	M8	M10	M10	M12

(2) Dimensions of rear connection see Figure 4 and 5
(3) Dimensions of plug-in type front connection see Figure 6
(4) Dimensions of plug-in type rear connection see Figure 7

Model		DAM2E-100	DAM2E-250	DAM2E-400	DAM2E-630	DAM2E-800
Rear Connection	L4	164	173	267		295
	H5	53	55	68		84
	H6	93	100	128		-
	H7	35	35	37		37
	M1	M8	M8	M10	M10	M12
	d	-	8.5	10.5		13
	t	-	-	8.5		16
Plug-in Connection	L6	168	183	279		296
	H8	50	50	60		61
	H9	64	72	84		97
	H10	76	87	107		148
	H11	18	18	21		16
	M1	M8	M8	M10	M10	M12
	M2	M6	M6	M6	M8	M8
	L7	220	252	357		-
	L8	250	276	387		-

2. Dimensions for mounting plate opening

(1) Dimensions of front connection see Figure 8 (X-X, Y-Y is the center of 3P circuit breaker)

Model		DAM2E-100		DAM2E-250		DAM2E-400		DAM2E-630		DAM2E-800
Pole		3	4	3	4	3	4	3	4	3
Dimensions for mounting plate opening (mm)	A	30		35		44		70		70
	B	129		126		194		243		303
	d	4.5		4.5		7		7		7

(2) Dimensions of rear connection see Figure 9 (X-X, Y-Y is the center of 3P circuit breaker)

Model		DAM2E-100		DAM2E-250		DAM2E-400		DAM2E-630		DAM2E-800
Pole		3	4	3	4	3	4	3	4	3	4
Dimensions for mounting plate opening (mm)	A	60	-	70	-	96	-			140	-
	A1	-	90	-	105	-	144			-	210
	B	72	-	87	-	124	-			178	-
	B1	-	102	-	122	-	172			-	248
	C	90		93		164				158
	D	132		144		224				243
	Φ1	22		24		32				48
	Φ2	5.5		5.5		6.5				7

 

Model		DAM2E-100	DAM2E-250	DAM2E-400
Pole		3	3	3
Dimensions for mounting plate opening (mm)	A	92	107	150
	B	60	70	60
	C	56	54	129
	D	38	63.2	62
	E	92	94	109
	d	6.5	6.5	8.5

(4) Dimensions of plug-in type rear connection see Figure 10 (X-X, Y-Y is the center of 3P circuit breaker)

Model		DAM2E-100		DAM2E-250		DAM2E-400		DAM2E-630		DAM2E-800
Pole		3	4	3	4	3	4	3	4	3	4
Dimensions for mounting plate opening (mm)	A	94	-	110	-	152	-			215	-
	A1	-	125	-	145	-	200			-	283
	B	60	-	70	-	60	-			140	-
	B1	-	90	-	105	-	108			-	210
	C	56		54		129				143
	D	48		58		65				65
	E	90		88		166				183
	d	6.5		6.5		8.5				10

Note: 2-poles, 4-poles circuit breakers, divided into L, M, H, they have the same breaking index as M-type.

Characteristics of inverse time breaking action of circuit breakers over-current release for power distribution when every pole is power-on at the same time

No.	Test current	I/In	Set time	Initial state
1	Conventional non-tripping current	1.05	2h(In>63A),1h(In≤63A)	Cold
2	Conventional non-tripping current	1.30	2h(In>63A),1h(In≤63A)	Immediately after Test 1

Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, and instantaneous action characteristic setting value of the circuit breaker for motor protection is 12In±20%.

Characteristics of inverse time breaking action of circuit breakers over-current release for motor protection when every pole is power-on at the same time

No.	I/In	Set time	Initial state	Remark
1	1.0	>2h	Cold
2	1.2	≤2h	Immediately after Test 1
3	1.5	≤4min	Cold	10≤n≤225
		≤8min		225 < in ≤ 630
4	7.2	4s≤T≤10s	Cold	10≤In≤225
		6s≤T≤20s		225 < in ≤ 630

Accessories

1,Internal accessory of circuit breakers

1.1 Shunt release
Rated control supply voltage of the shunt release: AC50Hz, 230V, 400; DC110V, 220V, 24V; When between 70%~110%, can break the circuit breaker reliably.<

When rated control supply voltage of the shunt release is DC24V, the maximum length of copper wire should meet the following requirements

Rated control supply voltage Uc(DC24V)/Conductor area	1.5mm²	2.5mm²
100%Uc 85%Uc	150m 100m	250m 160m

If the requirements of the above table are not met, it is recommended to design the shunt release control circuit using the following figure

1.2 Under-voltage release

When the power supply voltage drops to under-voltage release rated voltage of 70% to 35% of the range, the under-voltage
release circuit breaker reliable break; when the supply voltage is below the rated voltage undervoltage release 35% , Under-voltage
release to prevent the circuit breaker is closed; when the supply voltage is higher than 85% of the rated voltage of the under-voltage
release, the under-voltage release ensures that the circuit breaker is closed. The undervoltage releases are rated at AC50Hz, 230V,
400V.
Special Note: The circuit breaker with undervoltage release, only in the under-voltage with rated voltage, which can open and close
normally.

1.3 Pre-paid meter dedicated release

The rated operating voltage Ue of the pre-paid meter dedicated release is AC230/50Hz, it can worknormally in the range of (65% ~ 110%) Ue. When the Ctrl is cut off, the circuit breaker will delay 0.5s ~ 2s to be opening.

Wiring diagram of pre-paid meter dedicated release 

1.4 The rated value of auxiliary contacts and alarm contacts in Table 5

Classification	Conventional thermal current (Ith)	Rated current when   AC 400V Ie(AC-15)	Rated current when   DC 220V Ie(DC-13)
Auxiliary contact	3	0.4	0.15
Alarm contact	3	0.3	0.15

a. Auxiliary contact

b. Alarm contact
Alarm contacts don't act when the circuit breaker opens and closes normally, alarm contacts switch between normal opening and normal closing only after free tripping or fault tripping.

 

2,External Accessory for Circuit Breakers

2.1 Motor operating mechanism. The rated value and code are shown in Table 6.

Category/Model	DAM2-63. 125. 250	DAM2-400. 630. 800. 1250
Structure type	Electromagnet	Motor
AC voltage code	AC50Hz,230V,400	AC50Hz,230V,400
DC voltage code	DC110V,220V	DC110V,220V

NOTE: After the tripping of circuit-breaker with electric operating mechanism, the electric operating mechanism must make the circuit-breaker buckle again, then it can close.

The principle diagram of the opening and closing of DAM2-63,100,225 electric operating mechanism(AC)

The principle diagram of the opening and closing of DAM2-400,630,800,1250 electric operating mechanism(AC)

2.2 Installation dimensions of manual operating mechanism shown in Table 10
Diagram of handle mounting hole of DAM2-63~800

Total height of electric/manual operating mechanism of circuit breaker (mm)(shown in Table 12)

Model	Total height of electric operating mechanism H	Installation dimensions   of manual operating mechanism H
DAM2L-63	155	49
DAM2M/H-63	164	49
DAM2L-100	152	51
DAM2M/H-100	170	51
DAM2L-225	182	54
DAM2M/H-225	199	54
DAM2L/M/H-400	255	88
DAM2M/H-630	262	89
DAM2M/H-800	261	96
DAM2H-1250	290	103

How to fast Selection Table of DAM2 Series Molded Case Circuit Breaker

Corresponding letters	Function name	Function corresponding to the model
a	Model features	DAM2 Molded Case   Circuit Breaker
b	Frame rated current code	63A,100A,225A,   400A,630A,800A, 1250A
c	Breaking capacity characteristic code	L-standard breaking type;   M-second high breaking type; H-high breaking type
d	Operation mode code	No code for handle operation;   P for electric operation; Z for turning handle operation
e	Pole	2-two poles;   3-three poles; 4-four poles
f	Release name	2 Electromagnetic release;   3 Double release
g	Accessory	00 Without accessory 08 Alarm contact 10 Shunt release 20 Auxiliary contact 30 Undervoltage release 40 Shunt release, Auxiliary contact 50 Shunt release, Undervoltage release 60 Two sets of auxiliary contacts 70 Auxiliary contact, Undervoltage release 18 Shunt release, Alarm contact 28 Auxiliary contact, Alarm contact 38 Undervoltage release, Alarm contact 48 Shunt release, Auxiliary contact, Alarm contact 58 Shunt release, Undervoltage release, Alarm contact 68 Two sets of auxiliary contacts, Alarm contact 78 Auxiliary contact, Undervoltage release, Alarm contact 10Y Pre-paid meter dedicated release 40Y Pre-paid meter dedicated release, Auxiliary contact 50Y Pre-paid meter dedicated release, Auxiliary contact, Undervoltage release 18Y Pre-paid meter dedicated release, Alarm contact 48Y Pre-paid meter dedicated release, Auxiliary contact, Alarm contact 58Y Pre-paid meter dedicated release, Undervoltage release, Alarm contact
h	Application	No code for distribution;   2 for motor protection
i	Conventional products	No code;   T for transparent cover products
j	Amperage	10,16,20,25,32,63,80,100,125,160,180,200 ,225,250,315,350,400,500,630,700,800,1000 ,1250

Example: DAM2L-100 / 33102 63A means DAM2-type molded case circuit breaker, frame rated current is 100A, breaking capacity is the standard type, handle operation, 3 poles, double release, with shuntrelease, for motor protection, rated current is 63A.
Selection, installation, use should be consistent with the product manual or the relevant national standards.
Note: N-pole type of 4P circuit breaker is divided into A-type, B-type, which is not specified defaults to B type.

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.