TXCM1 Molded Case Circuit Breaker
Miniature Circuit Breaker | MCB
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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 |  |
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| Alarm contact | 208 | 308 |  |
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| Shunt release | 210 | 310 |  |
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| Pre-paid meter dedicated release |
210Y | 310Y | |||||||
| Auxiliary contact | 220 | 320 |  |
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| Undervoltage release | 230 | 330 |  |
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| Shunt release | 240 | 340 | - |  |
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| Auxiliary contact | 240Y | 340Y | - | ||||||
| Shunt release | 250 | 350 | - |  |
- |  |
- | |
- |
| Undervoltage release | 250Y | 350Y | - | ||||||
| Two sets of auxiliary contacts |
260 | 360 | - |  |
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| Auxiliary contact, Undervoltage release |
270 | 370 | - |  |
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| Shunt release | 218 | 318 | - |  |
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- | |
- |
| Alarm contact | 218Y | 318Y | - | ||||||
| Auxiliary contact, Alarm contact |
228 | 328 | - |  |
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| Undervoltage release, Alarm contact |
238 | 338 | - |  |
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- |  |
- |
| Shunt release, Auxiliary contact |
248 | 348 | - |  |
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- | |
- |
| Alarm contact | 248Y | 348Y | |||||||
| Shunt release, Undervoltage release, Alarm contact |
258 | 358 | - | - | - | - | - | ||
| Two sets of auxiliary contacts, Alarm contact |
268 | 368 | - |  |
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- | ||
| Auxiliary contact, Undervoltage release, Alarm contact |
278 | 378 | - |  |
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- | |
- |
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) |
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| 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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