TXCM1 Molded Case Circuit Breaker (CM1-400, hereinafter referred to as MCCB), is new circuit breakers which have been designed and developed by the company using international advanced technology. The circuit breakers are of the following characteristics: compact size, high breaking capacity, short arc-over distance and shakeproof, is ideal products applied on land or ships. The rated insulation voltage of the circuit breaker is 800V (500V for TXCM1-63), 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.
TXCM1 circuit breaker can be mounted vertically (upright) or horizontally (transverse).
TXCM1 MCCB is suitable for isolation and the symbol is " ".
TXCM1 MCCB meets the standard: GB14048.2 "low-voltage switchgear and control equipment, Part 2: circuit breakers."

■ Ambient air temperature: -5℃~+40℃, and average temperature in 24h is below +35℃. ■ Altitude: The altitude of the installation site is not more than 2000m. ■ Atmospheric conditions: The air relative humidity in the highest temperature +40℃ 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 +25℃, and consider the temperature changes in product on the surface of the gel. ■ Pollution Degree: 3.

Accessory name	Accessory code
	Instant aneous release	Double releae	63A,100A	63A,100A,225A,400A		630A630A		800A	1250A
			2-poles	3-poles	4-poles	3-poles	4-poles	3-poles	3-poles
Without accessory	200	300
Alarm contact	208	308							-
Shunt release	210	310
Pre-paid meter dedicated release	210Y	310Y
Auxiliary contact	220	320
Undervoltage release	230	330
Shunt release	240	340	-
Auxiliary contact	240Y	340Y	-
Shunt release	250	350	-		-		-		-
Undervoltage release	250Y	350Y	-
Two sets of auxiliary contacts	260	360	-
Auxiliary contact, Undervoltage release	270	370	-
Shunt release	218	318	-		-		-		-
Alarm contact	218Y	318Y	-
Auxiliary contact, Alarm contact	228	328	-						-
Undervoltage release, Alarm contact	238	338	-		-		-		-
Shunt release, Auxiliary contact	248	348	-		-		-		-
Alarm contact	248Y	348Y
Shunt release, Undervoltage release, Alarm contact	258	358	-	-		-		-	-
Two sets of auxiliary contacts, Alarm contact	268	368	-						-
Auxiliary contact, Undervoltage release, Alarm contact	278	378	-		-		-		-

A. 200 means circuit-breaker with electromagnetic release; 300 means thermodynamic+electromagnetic release; and 000 means circuit-breaker without release and internal accessory. B. 125, 250, 400, 2-pole products only have 210, 220, 230, 310, 320, 330. C. Only TXCM1-63, TXCM1-100, TXCM1-225, TXCM1-400 with pre-paid meter dedicated release.

MAIN TECHNICAL INDEX

1, Instantaneous action characteristic setting value of the circuit breaker for distribution is 10In±20%, TXCM1-1250
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 +40℃, 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

Model	Pole	Rated current(A)	Rated operating voltage(V)	Rated insulation voltage(V)	Rated ultimate short - circuit breaking capacity (Icu)			Flashover distance(mm)
					Test voltage (V)	Icu (kA)	Ics (kA)
TXCM1-63L	3	10、16、20、25、 32、40、50、63	400	500	400×1.10	25	18	0
TXCM1-63M	3、4					50	35
TXCM1-100L	3、4	16、20、25、32、40、 50、63、80、100	400	800		30	22	≤50
TXCM1-100M	2、3、4					50	35
TXCM1-100H	3					85	50
TXCM1-100L	3、4		690			10	5
TXCM1-100M	2、3、4					20	10
TXCM1-225L	3、4	100、125、140、 160、180、200、225	400	800		35	25
TXCM1-225M	2、3、4					50	35
TXCM1-225H	3					85	50
TXCM1-225L	3、4		690			10	5
TXCM1-225M	2、3、4					20	10
TXCM1-400L	3	225、250、315、 350、400	400	800		50	35	≤100
TXCM1-400M	3、4					65	42
TXCM1-400H	3					100	65
TXCM1-400L	3		690			15	8
TXCM1-400M	3、4					20	10
TXCM1-630L	3	400、500、630	400	800		50	35
TXCM1-630M	3、4					65	42
TXCM1-630H	3					100	65
TXCM1-630L	3		690			15	8
TXCM1-630L	3、4					20	10
TXCM1-800M	3	630、700、800	400	800		75	50
TXCM1-800H	3					100	65
TXCM1-800M	3		4690			30	15
TXCM1-1250	3	800、1000、1250	400	800		65	42
TXCM1-1250	3		690			25	12.5

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
0	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
3	1.5	≤4min	Cold	10≤n≤225
		≤8min		225 < in ≤ 630
4	7.2	4s≤T≤10s	Cold	10≤n≤225
		6s≤T≤20s		225 < in ≤ 630

INVERSE TIME PROTECTION CHARACTERISTIC CURVE

Derating factors table of temperature changes

Model/Coefficient/Temperature	+40℃	+45℃	+50℃	+55℃	+60℃
TXCM1-63	1	0.94	0.88	0.80	0.72
TXCM1-100	1	0.95	0.89	0.84	0.76
TXCM1-225	1	0.97	0.91	0.87	0.82
TXCM1-400	1	0.94	0.84	0.80	0.73
TXCM1-630	1	0.93	0.88	0.83	0.76
TXCM1-800	1	0.93	0.88	0.93	0.76
TXCM1-1250	1	0.98	0.83	0.79	0.76

OUTLINE AND INSTALLATION DIMENSIONS

Model	H	H1	H2
TXCM1-100L/2P	86	104	24
TXCM1-100L/3P	68	86	24
TXCM1-100M/3P	86	104	24
TXCM1-100H/3P	86	104	24
TXCM1-100M/4P	86	104	24
TXCM1-100H/4P	86	104	24

Model	H	H1	H2
TXCM1-225L/2P	104	127	24
TXCM1-225L/3P	86	110	24
TXCM1-225M/3P	103	127	24
TXCM1-225H/3P	103	127	24
TXCM1-225M/4P	103	127	24
TXCM1-225H/4P	103	127	24

Model	H	H1	H2
TXCM1-400L/2P	-	-	-
TXCM1-400L/3P	-	-	-
TXCM1-400M/3P	-	-	-
TXCM1-400H/3P	-	-	-
TXCM1-400M/4P	-	-	-
TXCM1-400H/4P	-	-	-

Model	H	H1	H2
TXCM1-800H/3P	-	-	-
TXCM1-800H/4P	-	-	-

Model	H	H1	H2
TXCM1-630M/3P	-	-	-
TXCM1-630H/3P	-	-	-
TXCM1-630M/4P	-	-	-
TXCM1-630H/4P	-	-	-

ACCESSORIES OF CIRCUIT BREAKERS

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 closenormally.

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

Classification	Conventional thermal current (Ith)	Conventional thermal current (Ith)	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

The circuit breaker is in the "openning"position,offline position
The circuit breaker is in the "closing"position

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.

The state of the circuit breaker in the "opening"and "closing"positions
The state of the circuit breaker at the time of free tripping

2、External Accessory for Circuit Breakers

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

Category/Model	TXCM1-63. 125. 250	TXCM1-400. 630. 800. 1250
Structure type	Electromagnet	Motor
AC voltage code	AC50Hz、230V、400	AC50Hz、230V、400
DC voltage code	DC110V、220V	DC110V |220V

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
TXCM1-63L	155	49
TXCM1-63M/H	164	49
TXCM1-100L	152	51
TXCM1-100M/H	170	51
TXCM1-225L	182	54
TXCM1-225M/H	199	54
TXCM1-400L/M/H	255	88
TXCM1-630M/H	262	89
TXCM1-800M/H	261	96
TXCM1-1250H	290	103

Quick Selection Table of TXCM1 Series Molded Case Circuit Breaker

Corresponding letters	Function name	Function corresponding to the model
a	Model features	TXCM1 Molded Case Circuit Breaker
b	Frame rated current code	63A、100A、225A、400A、630A、800A、250A
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、100、1250

ACCESSORIES OF CIRCUIT BREAKERS