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SCOPE OF APPLICATION

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."


NORMAL OPERATING CONDITIONS

■ 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.


NORMAL OPERATING CONDITIONS


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


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