TXCM1LE Residual current operated MCCB
Moulded Case Circuit Breaker | MCCB
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SCOPE OF APPLICATIONV
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 letters |
Corresponding letters |
Corresponding letters |
| 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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