Application
	GTMA1 moulded case low-voltage circuit breakers is characterized by high quality, reliability, and performance under all conditions, simplicity of installation and safety of operation. It can be used for motor protection, switch-disconnecting, circuit-breaking, and residual current circuit breaking, as well as specific ranges (for motor protection and switch-disconnecting) complying with the standard of IEC60947-1, IEC60947-2, IEC60947-4-1. This MCCB can be mounted in primary (Power Center) or secondary (Panel Board) distribution switchboards, for motor protection and control (Motor Control Center), in generators and for end users. Their performances are, however, of particular interest where critical situations arise (very high rated and fault currents), or where complex plant engineering solutions are needed (special coordination requirements and plant automation). They also guarantee total selectivity of the protections up to full breaking capacity of the circuit-breaker installed on the load side. □ Protection and control in installations for electric traction □ Particularly severe environmental conditions such as mines and steelworks □ Refineries and chemical plants as well as gas pipelines, water pipelines. □ Installation on-board ships □ Offices, theaters, shopping malls and residential complexes □ Underground railway stations □ Off-shore drilling rigs
	Connection type of circuit breaker
	Normal working environment
	□ Ambient air temperature : -5℃～+40℃ □ Resistance to salt spray and oil spray □ Ambient environment/medium free from explosive danger, air or conductive dust which may cause corrosion of metal or influence the stability of installation □ Altitude : ≦2000m

GTMA1 Moulded case circuit breaker

Class of breaking capacity		B N	B N
Frame rated current Inm		160	200
Rated current In		12.5 16 20 25 32 40 50 63 80 100 125 160	12.5 16 20 25 32 40 50 63 80 100 125 160 200
Rated insulating voltage Ui		500V	500V
Rated operating voltage Ue		230V	400V
Number of poles		1	2
N-pole rated current		=In	=In
Rated ultimate short-circuit breaking capacity kA Icu AC 400V/50Hz O-CO		25 35	25 35
Rated operating short-circuit breaking capacity kA Ics AC 400V/50Hz O-CO-CO		18.75 27	18.75 27
Rated short-time withstand current for 1s kA Icw AC400V/50HZ		40/0.3	40/0.3
Rated impulse withstand voltage Uimp V		10000	10000
Life	Total times Electrical life Mechanical life	20000	15000
Flashover distance	mm	3000	2500
Release	Thermal magnetic release	17000	12500
	Electronic release	≤30/0	≤30/0
Usage category	Main circuit	A/0	A/0
	Accessorial circuit & control circuit	AC-15	AC-15
Dimensions	W (mm)     3P 4P	30(1P)	60(2P)
	L(mm)      3P 4P	120	120
	H(mm)      3P 4P	70	70
Weight	Fixed      3P 4P	0.92/1.3	0.92/1.3
	Plug in      3P 4P
	Withdrawable      3P 4P

B N	B N S	N S H X	N S H	N S H X	S H
125	160	250	400、630	800	1250、1600
12.5 16 20 25 32 40 50 63 80 100 125	32 40 50 63 80 100 125 160	125 160 180 200 225 25	250 315 350 400 500 630	400 500 630 700 800	800 1000 1250 1600
500V	690V	690V	690V	690V	690V
400V	400V	400V	400V	400V	400V
3/4	3/4	3/4	3/4	3/4	3
=In	=In	=In	=In	=In	=In
20 35	25 35 50	35 50 65 100	35 50 65	35 50 65 100	50 65
10 17.5	18.75 27	35 37.5 48.8 75	35 37.5 48.8	35 37.5 48.8 75	50 48.75
			5	10	20
6000	8000	8000	8000	8000	8000
10000	8000	8000	5000	5000	3000
1500	1000	1000	1000	1000	500
8500	7000≤30/0	7000	4000	4000	2500≤30/0
≤30	≤30	≤50	≤50	≤80	≤80
A	A	A	A,B	A,B	B
AC-15	AC-15	AC-15	AC-15	AC-15	AC-15
76 76	90 90 90	105 105	140	210 210	210
101 101	120 120 120	140 140	184	280 280	280
120 120 120 120	120 120 120 120 120 120	170 254 170 254	254 254	268 406 268 406	406 406
70 70 70 70	70 70 79 70 70 79	103.5 103.5 103.5 103.5	103.5 103.5	103.5 103.5 103.5 103.5	138.5 138.5
0.92/1.3	1.2/1.6	2.7/3.5	5	5.1/7
1.2/1.5	1.4/1.8	3.2/4.2	8.2	6.2/8.5
		3.6/4.6  9	6.5/8.7	12.2/15.3	22/30.1

Protection characteristic
1.Variable parameters of thermal overload protection current setting
2.Characteristics of Thermal magnetic Over-current release
3.Characteristics of inverse time delay thermal releaseping-Ranges of current settings of thermal inverse time delay

Fram rated current size Im(A)	Circumstance temperature	Rated current	Current settings of inverse time delayN S H X		Adjustable Instantaneous Current (A)			Instantaneous releaseping Current	In
	+10°C +20°C +30°C +40°C +50°C +60°C		40°C	Setting lrl	5In	7.5In	10In
			A/B/C Phase	N Pole
125	1.19 1.03 1.06 1.0In 0.93 0.87	12.5A	12.5A	12.5A				500A
		20A	20A	20A				500A	10
		25A	25A	25A				500A	10
		32A	32A	32A				500A	10
		40A	40A	40A				500A	10
		50A	50A	50A				500A	10
		63A	63A	63A				630A	12
		80A	80A	80A				800A	12
		100A	100A	100A				1000A	12
160	1.15 1.10 1.05 1.0In 0.94 0.88	125A	125A	125A				1250A	12
		32A	22.4~32A	22.4~32A				500A	10
		40A	28~40A	28~40A				500A	10
		50A	35~50A	35~50A				500A	10
		63A	44.1~63A	44.1~63A				630A	12
		80A	56~80A	56~80A				800A	12
		100A	70~100A	70~100A				1000A	12
		125A	87.5~125A	87.5~125A				1250A	12
250	1.14 1.10 1.05 1.0In 0.95 0.87	160A	112~160A	112~160A				1600A	12
		125A	87.5~125A	87.5~125A				1250A	12
		160A	112~160A	112~160A				1600A	12
		180A	126~180A	126~180A				1800A	12
		200A	140~200A	140~200A				2000A	12
		225A	157.5~225A	157.5~225A				2250A	12
400 630	1.13 1.11 1.04 1.0In 0.92 0.85	250A	175~225A	175~225A				2500A	12
		250A	175~250A	175~250A	1250	1875	2500	2500A	12
		315A	220.5~315A	220.5~315A	1575	2363	3150	3150A	12
		350A	245~350A	245~350A	1750	2625	3500	3500A	12
		400A	280~400A	280~400A	1750	2625	4000	4000A
		500A	350~500A	350~500A	2500	3750	5000	5000A
		630A	441~630A	441~630A	3150	4725	6300	6300A
800	1.10 1.08 1.03 1.0In 0.84 0.77	400A	400A	400A				4000A
		500A	500A	500A				5000A
		630A	630A	630A				6300A
		700A	700A	700A				7000A
		800A	800A	800A				8000A
1250 1600	1.08 1.06 1.02 1.0In 0.8 0.73	800A	800A	800A
		1000A	1000A	1000A
		1250A	1250A	1250A
		1600A	1600A	1600A

	Accessory Code		Accessory Installation and lead cable method
Name of Accessories	Thermal magnetic Release	Duplex Release	GTMA1-125 GTMA1-160	GTMA1-250 GTMA1-400 GTMA1-630	GTMA1-800	GTMA1-1250 GTMA1-1600
Alarm Contact	208	308	3P、4P	3P、4P	3P、4P	3P、4P
Shunt release	210	310
Shunt Release Alarm Contact	218	318
Auxiliary Contact	220	320
Auxiliary Contact Alarm Contact	228	328
Under voltage release	230	330
Under voltage release Alarm Contact	238	338
Shunt release Auxiliary Contact	240	340
Shunt Release Under voltage release Two-sets Auxiliary Contact	248	348
Two-sets Auxiliary Contact	260	360
Two-sets Auxiliary Contact Alarm Contact	268	368
Under voltage release Auxiliary Contact	270	370
Under voltage release Auxiliary Contact Alarm Contact	278	378

■ Shunt release	■ Auxiliary contact & warning contact
■ Under-voltage release 63A-160A under-voltage inlay release	63A-160A under-voltage release	250A-400A under-voltage release	630A-1600A under-voltage release

Motor Operator □ Motor operator 1. Motor operator is used to remote control the closing of the breaker 2.The specification of motor operator Frame rated current Model of motor operator CD1 CD2 CD3 125A CD2-125 160A CD2-125 250A CD1-250 400、630A CD1-400CD1-630 800A CD3-800 1600A CD3-800 □ CD1 direct action motor operator The accessory of electric operation The range of operating voltage motor operation device (0.85-1.1)XUs Rated control voltage Power supply AC 50 Hz 220V 380V Power consumption Start Power consume 510VA 510VA Continuance Power consume 360VA 360VA DC 110V 220V Power consume Start Power consume 510W 510W Continuance Power consume 360W 360W Close time 0.1s Close time 0.1s The accessory of electric operation The range of operating voltage motor operation device (0.85-1.1)XUs Rated control voltage Power supply AC 50 Hz 220V 380V Power consumption Start Power consume 220VA 200VA Continuance Power consume 110VA 110VA DC 110V 220V Power consume Start Power consume 200W 200W Continuance Power consume 110W 110W Close time 0.1s Close time 0.1s The accessory of electric operation The range of operating voltage motor operation device (0.85-1.1)XUs Rated control voltage Power supply AC 50 Hz 220V 380V Power consumption Start Power consume 660VA 660VA Continuance Power consume 180VA 180VA DC 110V 220V Power consume Start Power consume 600W 600W Continuance Power consume 180W 180W Close time 0.1s Close time 0.3s