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SCOPE OF APPLICATION

TXCM1LE Molded Case Circuit Breaker (CM1LE MCCB switch) is one of the new breakers which have been designed and developed by the company using international advanced technology. Suitable for the circuits of AC 50Hz, rated voltage of 400V, rated current of 16A to 800A.
Its main function is to provide indirect contact protection for personal electric shock of fatal danger. Rated residual operating current does not exceed residual current operated circuit breaker of 0.03A when other protection measures are invalid, also can provide supplementary protection for direct contact, but not as the only direct contact protection. At the same time, CM1LE MCCB switch can also prevent electrical fire caused by the contact fault current. And CM1LE MCCB switch can protect overload and short circuit of the circuits, can also be used for infrequent conversion of the circuits.
The CM1LE MCCB switch has the small volume (equal to the volume of the corresponding molded case circuit breaker), high breaking, short arc arcing and residual operating current. At the same time, CM1LE MCCB switch can take alarm contact, shunt release, undervoltage release, auxiliary contact, turning handle operating mechanism, electric operation mechanism and other accessories. The wiring method has many ways: wiring in front of board, wiring on back of board, insertion type of the board and so on, is ideal product for users.
TXCM1LE MCCB (CM1LE MCCB switch) can be mounted vertically (upright) or horizontally (transverse).
The Circuit Breaker Meet the standards: GB 14048.2, IEC 60947-20

NORMAL OPERATING CONDITIONS AND INSTALLATION CONDITIONS

■ Ambient air temperature
□ The upper limit of ambient air temperature is +40℃;
□ The lower limit of ambient air temperature is -5℃;
□ The average value of ambient air temperature within 24h does not exceed +35℃.
■ Altitude: The altitude of the installation site is not more than 2000m.
■ Pollution degree: 3.
■ Installation category: Ⅲ.
■ Atmospheric conditions: The air relative humidity in the highest temperature + 40℃ for 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 +20℃, and consider the temperature changes in product on the surface of the gel.
■ External magnetic field: The external magnetic field in the vicinity of the installation site does not exceed 5 times the geomagnetic field in any direction.

TECHNICAL PARAMETERS

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 (see Table 3)

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 tripping current 1.30 2h(In>63A),1h(In≤63A) Immediately after Test 1

Characteristics of inverse time breaking action of over-current release for motor protection when every pole ispower-on at the same time (products of 16A~40A without motor protection)

No. Setting current Set time
Inm=125A Inm=250A、400A Inm=630A、800A Initial state
1 1.0In >2h >2h >2h Cold
2 1.2In ≤2h ≤2h ≤2h Immediately after Test 1
3 1.5In ≤4min ≤4min ≤8min Hot
4 7.2In 4s 4s 6s Cold


Circuit Breaker (IEC60947-2/GB14048-2)
Frame current Inm 100 225 400 800
Whether it is suitable for motor protection  
Rated insulation voltage(V) AC800V AC800V AC800V AC800V
Rated impulse withstand voltage(KV) 8 8 8 8
Rated operating voltage AC AC400V AC400V AC400V AC400V
Breaking capacity level L M L M L M
Pole 3,4 3,4 3,4 3,4 3,4 3,4
Ultimate breaking capacity AC400V 35 50 35 50 50 50
Operation breaking capacity AC400V 22 30 22 30 30 30
Rated residual short-circuit making (breaking) capacity l△m KA 25%Icu 25%Icu 25%Icu 25%Icu 25%Icu
Default rated residual operating current I△nt mA 30/100/300 100/300/500 100/300/500 300/500/100
Rated residual non-operating current I△noh mA 1/2I△n 1/2I△n 1/2I△n 1/2I△n
General breaking time S 0.2
Delay breaking time S 0.3、0.4、0.5、0.6、1.0、2.0
Optional rated residual current I△nt mA 30-100-300mA ,100-300-500mA,300-500-1000mA,50mA,75mA,300mA
Mechanical life 8500 7000 4000 2500
Electrical life 1500 1000 1000 500
Flashover distance 50mm 50mm 100mm 100mm
Release / Rated current
Thermal magnetic fixed / Rated current 40/50/63/80/100 100/125/160/180/200/225 200/225/250/315/350/400 400/500/630
Accessory
Shunt
Auxiliary
Auxiliary  
Leakage alarm module Leakage alarm module
Leakage alarm non-action
Leakage alarm non-action
Electric operating mechanism
Installation and connection
Fixed on back of the board
Fixed on back of the board
Fixed on back of the board
Product certification CCC、CE


Action characteristics of general residual current operated circuit-breakers of I△n ≤ 30mA should be non time-delay type.
Note: a. For circuit breaker of I△n≤30mA, 5I△n can be replaced with 0.25A. b. Using 0.25A by Note a., then 10I△n is 0.5A.

Residual current I△n 2I△n 5I△n 10I△n
Max breaking time(s) 0.2 1.05 0.04 0.04

ACTION CHARACTERISTIC OF TIME DELAY RESIDUAL CURRENT OPERATED CIRCUIT BREAKER

Limit non-driving time of time delay circuit breaker according to regulations of 2I△n, its action characteristic.

Delay time(S) Max breaking
time when I△n (s)
Max breaking
time when I△n (s)
Max breaking
time when I△n (s)
Max breaking
time when I△n (s)
Max breaking time
when 10 I△n(s)
0.3 0.3 0.1 0.3 0.25 0.25
0.4 0.4 0.2 0.4 0.35 0.35
0.5 0.5 0.3 0.5 0.45 0.45

INVERSE TIME PROTECTION CHARACTERISTIC CURVE OF RESIDUAL CURRENT OPERATED CIRCUIT BREAKER


STRUCTURE AND WORKING PRINCIPLE

This series residual current operated circuit breakers are electronic residual current operated circuit breakers, mainly consists of the zero-sequence transformer, Electronic control leakage release and circuit breakers with overload and short circuit protection, all components are installed in a pair of plastic case.

When the circuits protected by the chip processing have leakage or personal electric shock, as long as the residual current reach to setting operating current value, the output signal of the secondary winding of the zero sequence transformer trigger SCR to conduct, and make residual current operated circuit breaker act by the leakage release,thereby cutting off the power supply to play the protective role in leakage and electric shock.

When the protected circuits have overload or short circuit, the thermal magnetic release complete the delay or instantaneous trip action to make the residual current operated circuit breaker act, thereby cutting off the power supply to play the protective role in overload and shout-circuit.

INTERNAL ACCESSORY OF RESIDUAL CURRENT OPERATED CIRCUIT BREAKERS

When the voltage drops (or even slow down) to the rated voltage range of 70% and 35%, undervoltage release should act; undervoltage release should prevent residual current operated circuit breaker closing when the power supply voltage is below the release voltage of 35%; When the supply voltage is equal to or greater than 85%, undervoltage release should ensure that the residual current operated circuit breaker can be closed. The rated value and code are shown in Table 7.

Note: Residual current operated circuit breakers equipped with undervoltage releases can be normally closing and opening when the undervoltage release at the rated voltage.

Code A2 A4
Voltage specification AC230V AC400V
Rated frequency 50Hz 50Hz


b. Shunt release

Residual current operated circuit breakers can be reliably disconnected at rated voltage of 70% to 110%. Rating and code (see Table 8)

Code A2 A3 D1 D2 D3
Voltage specification AC230V AC2400V AC110V AC230V AC240V
Rated frequency 50Hz 50Hz - - -


Note: When the voltage specification is DC24V, the rated current is 5A ± 0.5A.


C. Auxiliary contact and alarm contact parameters

Frame grade Conventional heating current Ith A Conventional heating current Ith A Conventional heating current Ith A
Frame grade 3 0.3 0.15
Inm≥400A 3 0.4 0.2


Alarm contact

When residual current operated circuit breaker opens and closes normally, the alarm contact does not act, only after the free trip (or fault trip), alarm contact alarms, the contact changes the original position, is that normally open transfers closed, normally closed transfers open. When the circuit breaker buckles again, the alarm contact restore the original state.


EXTERNAL ACCESSORIES OF RESIDUAL CURRENT OPERATED CIRCUIT BREAKERS

Electric operating mechanism
When control voltage is in rated control voltage range of 85%-110%, the residual current operated circuit breaker can be making and breaking reliably. The rated value of the motor operated mechanism (see Table 10), the total height of the residual current operated circuit-breaker mounted with electric operating mechanism (see Table 11).

Product Model Product Model Mechanical life(times) Operating current(A) Power consumption(W)
TXCM1LE-100L/M AC400V、AC230V 10000 ≤5 14
TXCM1LE-225L/M 8000
TXCM1LE-400M/H 5000 ≤5.7 120
TXCM1LE-630M/H 5000 ≤2 35
TXCM1LE-630M/H 3000 ≤2 35


Model TXCM1LE-100L/M TXCM1LE-225L/M TXCM1LE-400L/M TXCM1LE-630M/H
TXCM1LE-800M/H
Height H(mm) 164 170 238 261

Installation dimensions of manual operating mechanism

Model 125L/M 225L/M 400M/H 630M/H 800M/H
Installation
dimensions(mm)H
54 56 88 63 63
Y value of the operating handle relative to the center of the
circuit breaker
0 0 0 0 0


Wiring diagram of leakage alarm module

Precautions: 

1, Leakage alarm module auxiliary contact capacity: AC230V 0.5A. 
2, The product must be connected to the module power supply before closing.
3, After leakage alarm, no pressing product test button continuously.
4, After leakage alarm, please promptly remove the fault, and press the reset button to reset.

Selection principle:

When selecting the rated residual operating current value of the residual current operated circuit breaker, the possible normal leakage current value of the protected circuit or equipment should be taken into account. When necessary, the leakage current value of the protected circuit or equipment can be got by actual measurement. Selecting of the rated residual non-operating current of residual current operated circuit breakers, which should be not less than 2 times the maximum value of the normal leakage current of the electrical wiring and equipment. Residual current operated circuit-breakers with a rated residual operating current of 30 mA should be preferred when hand-held power tools, portable electrical appliances, household appliances, sockets, appliances for construction sites (rated current not less than 100 A) and other equipments have difficulty in ground connection. The residual current operated circuit-breaker with a rated residual operating current of 30 mA can be selected for single device. The residual current operated circuit-breaker with a rated residual operating current of 30 mA or more can be selected for the total protection of multiple devices (multi-branch). Residual current operated circuit-breakers with a rated residual operating current of 30 mA should be selected for electrical equipment installed in wet locations.

OUTLINE AND INSTALLATION DIMENSIONS

Model Pole Installation dimensions mm
a b d e Mounting hole
TXCM1LE-100L
TXCM1LE-100M
2 - 132 - - 2XΦ5
3 30 132 - - 4XΦ5
4 60 132 - - 6XΦ5
TXCM1LE-225L
TXCM1LE-225M
2 - 126 - - 2XΦ5
3 35 126 - - 4XΦ5
4 70 126 - - 6XΦ5
TXCM1LE-400M
TXCM1LE-400H
3 44 194 331 105 4XΦ5
4 94 194 331 153 6XΦ5
TXCM1LE-630M
TXCM1LE-630H
3 70 243 387 140 4XΦ5
4 140 243 387 210 6XΦ5
TXCM1LE-800M
TXCM1LE-800H
3 40 243 387 140 4XΦ5
4 140 243 387 210 6XΦ5


Model Pole Installation dimensions mm
A B C D E F G H L
TXCM1LE-100L
TXCM1LE-100M
2 63 155.5 73.54 96 51 23 - - 256
3 90.5 155.5 73.5 96 51 23 - - 256
4 120.5 155.5 73.5 96 51 23 - - 256
TXCM1LE-225L
TXCM1LE225M
2 79 166 73.5 96 63 23 - - 370
3 105 166 73.5 96 63 23 - - 370
4 140.5 166 73.5 96 63 23 - - 370
TXCM1LE400M
TXCM1LE-400H
3 150 257 110 162 89 66 66 4XΦ5 462
4 200 257 110 162 89 66 66 6XΦ5 462
TXCM1LE630M
TXCM1LE-630H
3 210 280 118 170 81 66 66 4XΦ5 490
4 280 280 118 170 81 66 66 6XΦ5 490
TXCM1LE800M
TXCM1LE-800H
3 210 280 118 170 81 66 66 4XΦ5 490
4 280 280 118 170 81 66 66 6XΦ5 490


Model Installation dimensions mm
125L/M 250L/M 400M/H 630M/H 800M/H

Outline dimension

W1 30 35 48 70 70
H6 - - 18 20 20
H7 63 88 39 64 64
H8 96 126 74 64 64
H9 39 47 60 87 87
H10 62 79 88 143.7 143.7
H11 122 134 111 158.7 158.7
H12 13 13 21.5 27 27
M 8 8 - - -
Φd1 - - Φ12 Φ16 Φd16
M1 - M8 M10 M12 M12

Installation dimensions

Φd2 6 6 9 12 12
ΦD - - 33 37 37
L2 136 144 224 243 243
L4 104 104 163 173 173
L5 168 184 285 305 305
L6 3P:95
4P:125
3P:110
4P:145
3P:150
4P:198
3P:215
4P:285
3P:215
4P:285
K 90 105 60 210 90
K1 - - 66 95 95
K2 M8* 6 8 16 16
K3 M8* 25 28 44 44
J 72 73 130.4 146 148
A - - 44 70 706XΦ5
Φd - - 7 7 7

QUICK SELECTION

Corresponding
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Corresponding
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a Model features

TXCM1LE residual current operated circuit breaker

b Frame rated current code 100A、225A、400A、630A、800A
c Frame rated current 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 Pole

2 Electromagnetic release;3 Thermal magnetic release

g Accessory 00 No accessory
08 Alarm contact
10 Shunt release
20 Auxiliary contact
28 Auxiliary contact, Alarm contact
30 Undervoltage release
40 Shunt release, Auxiliary contact
48 Shunt release, Auxiliary contact, Alarm contact
60 Two sets of auxiliary contacts
68 Two sets of auxiliary contacts, Alarm contact
70 Auxiliary contact, Undervoltage release
h Application

No code for distribution;2 for motor protection

i Conventional products

No code;T for transparent cover products

j Rated current 16、20、25、32、63、80、100、125、160、180、200、225、250、315、350、400、500、630、700、800
k Rated residual operating current (mA)

Normal type:30,50,100,200,300,500

Adjust type: 30,50,100; 50,100,200;50,200,300; 100,200,300;100,300,500; 200,300,500; 300,500

Other instructions Breaking time

Normal type code: 0.1,0.2;Delay type code: 0.3,0.4,0.5

Rated residual operating current (mA) AC230V / AC400V / DC23
Rated voltage of shunt release Ac230 / AC400V / DC230V / DC400V
Undervoltage release AC230V / AC400V

Example: TXCM1LE-225M / 4310 150A 50mA 0.4s AC230V, means TXCM1LE-225 type residual current operated circuit breaker for distribution protection, frame rated current of 225A, rated current of 150A, the second high type breaking capacity, four-poles, rated residual operating current of 50mA, delay type, breaking time <0.4s, thermal magnetic release, with shunt release (AC230V).Selection, installation, use should be consistent with the product manual or the relevant national standards.

STRUCTURE CHART OF CLASSIFICATION PROTECTION COORDINATION OF RESIDUAL CURRENT OPERATED CIRCUIT BREAKER

First level protection

Connecting wires:
Copper core plastic insulated conductor cross-sectional area is 50mm ²
Rated operating current: 250A
Rated residual operating current: 300mA ~ 500mA
Residual breaking time: 0.6s ≤ t ≤ 0.8s
The optional residual current operated circuit-breakers are:
TXCM1LE-225/400, DZ20L-250/400

Second level protection

Connecting wires:
Copper core plastic insulated wire cross-sectional area is 4 ~ 16mm ²
Rated operating current: 100A, 80A, 63A, 40A
Rated residual operating current: 100mA ~ 300mA
Residual breaking time: 0.2s ≤ t ≤ 0.4s
The optional residual current operated circuit breakers are:
TXCM1LE-100/225, DZ20L-160, DZ15LE-100

Third level protection

Connecting wires:
Copper core plastic insulated conductor cross-sectional area is 1.5 ~ 4mm ²
Rated operating current: 40A, 32A, 20A
Rated residual operating current: 30mA or less
Residual breaking time: t ≤ 0.1s or faster
The optional residual current operated circuit-breakers are:
TXCM1LE-100, DZ47LE-63

Fourth level protection

Connecting wires:
Copper core plastic insulated conductor cross-sectional area is 1 ~ 2.5mm ²
Rated operating current: 32A, 20A
Rated residual operating current: 10mA or less
Residual breaking time: fast action type
The optional residual current operated circuit breakers are:
DZ47LE-63, DZ30LE-32

OUTLINE AND INSTALLATION DIMENSIONS



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