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Scope of Application

TXD7S-63 Residual Current Circuit Breaker with shunt trip (pre-paid meter remote controlled Circuit Breaker/ IC card meter circuit breaker), with function of intelligent shunt release, used for the circuit of AC 50Hz/60Hz, rated operating voltage of 110V-400V , rated current of 63A, the remote control breaker can remote control to break or automatic signal control to break for the circuit, and plays a protective role in overload, short circuit and leakage in the circuit. At present, the IC card is widely used with IC card prepaid meter to control the circuit on-off.
TXD7S-63 remote controlled Circuit Breaker meets standards of IEC60898, GB10963, GB14048.2, and has the international advanced level.

Model and meaning

Normal operating conditions

Ambient air temperature: -5℃~40℃. For using at temperatures above +40℃ or below -5℃, contact TAIXI Technology Department.
The altitude of installation site does not exceed 2000m.
The air is clean and the atmospheric relative humidity at ambient air temperature of + 40℃ is not more than 50%.
At the low temperature can have higher relative humidity, for example, at 20℃, the relative humidity can reach 90%.
It should be noted that, due to temperature changes, there may are appropriate gel produced occasionally, this time you should take appropriate measures (such as drainage holes).
The remote controlled Circuit Breaker with shunt release shall be mounted vertically, with an inclination of not more than 5% relative to the vertical plane. Installed in the place without significant shake and shock vibration.
Use after derating if installed in a closed protective case and more than one close to each other, optional derating factor is 0.7 ~ 0.8, can use high-value for metal protective case, for plastic protective case, you can use low value .

Structure characteristics

● has a high breaking capacity 6000A.
● compact, small size (2 modules wide).
● With the center line breaking function, more completely reliable.
● Dual-function terminals, wiring capacity.
● With a contact status indicator, easy to identify the contact contact.
● Rated current range, can be used as the master switch.
● Uniform accessories series.
● The introduction of the delay function so that the circuit breaker in the energy meter initialization switch does not malfunction.
● With the use of pre-paid energy meter, can accurately receive and execute the meter trip instruction.
● Only 0.09W static loss during normal operation.
● When the external control wire is cut, the switch will trip immediately and can not be re-closed to effectively prevent the stealing behavior.
● With isolation, short circuit protection, overload, leakage protection.
● With the function of delay tripping, it can avoid the power-on initialization time of the meter, so it can shield the wrong trip instruction issued by the electric energy meter at the time of power transmission.
● Terminals have been improved, the pressure line is more reasonable, greatly reducing the heating caused by poor contact. .

Main parameters and technical performance

● Number of poles: 1P + N; 3P + N
● Circuit breaker in the off-phase when the work of the situation: the implementation of intelligent phase-shunt tripping circuit breaker;
● instantaneous trip type: C-type (lighting protection circuit breaker 5ln ~ 10ln);
● Rated operating voltage Un (V): 230 (1P + N); 400 (3P + N);
● rated current ln (A): 6,10,16,20,25,32,40,50,63;
● rated control supply voltage Us (V): 230;
● rated auxiliary circuit voltage Usm (V): 230;
● Intelligent shunt trip delay time of the circuit breaker is: 0.5s≤t≤2s;
● short-circuit breaking capacity: 6000A;
L [lambda] n (mA) = 30/50/100;
● lno = ½ lΔn

Main technical parameters

Model Frame rated
current (A)
Pole  Width/bit
Type Rated current
Rated operating
voltage (V)
Rated short circuit
breaking capacity(A)
TXD7S-63 63 1P+N 2 C 6,10,16,20,
230/400 230 6000
3P+N 4
Initial state Test current Set time Prospective
ln≤32A ln>32A
6~63A Cold 1.13ln t≥1h t≥1h Non tripping
Then after the
last test
1.45ln t<1h t<1h Tripping The current rise steadily
to a fixed value within 5S
Cold 2.55ln 1s<t<60s 1s<t<120s Tripping
Cold 5ln t≤0.1s t≤0.1s Non tripping Type C
Cold 10ln t<0.1s t<0.1s Tripping
Cold 10ln t≤0.1s t≤0.1s Non tripping Type D
Cold 20ln t<0.1s t<0.1s Tripping

The principle of shunt release

Shunt release is essentially a sub-gate coil plus release. Thermal trip and electromagnetic trip also use this release. Add the specified voltage to the shunt trip coil, the remote controlled circuit breaker will trip and sub-gate. Shunt release is commonly used in control of remote automatic power-off, and now the most used is that the fire control room cut off the non-fire power. The remote controlled circuit breaker after shunt trip can not remote control closing immediately, and can not be directly closed manually, the remote controlled circuit breaker must be deducted before closing, this is the same as that it should be closed again after overload and other trip. This is the distinction between shunt tripping and electrically operated opening.
Remote control breaker operating handle has three positions, except for the up-off and down-on positions as we all known, after the trip, handle will stay in the middle. The so-called re-button is that it can be closed after the handle pulled from the middle position to the sub-position to make release the hook again.
Types of shunt trip coil voltage are AC and DC, the voltage has a variety of voltage levels. There is the most convenient and easiest way about using DC24V power supply as shunt trip coil power supply when the non-fire power cut off. Shunt trip coil can be power-on for a short time, or burn over time; so there is a normally closed contact of circuit breaker in the control loop to cut off current of the shunt trip coil after the circuit breaker trip.

Functions of shunt release
Shunt release is used for remote operating low-voltage circuit breaker to open. And its electromagnetic coil is connected in parallel to the power supply side of the low-voltage circuit breaker. Need to be open, press the normally open button to make the electromagnet of the shunt release have electricity and pull up armature, the low-voltage circuit breakers switch off through the transmission mechanism promote the free trip mechanism.
When a low-voltage circuit breaker is equipped with two or more release, we call it as the low-voltage circuit-breaker equipped with multiple release. In specific use, the shunt trip focus on control, no-voltage trip focus on protection.

Action characteristics of shunt release
Intelligent shunt release circuit breaker's operating voltage is any value within 70% to 110% Un, In the use, signal lines add control voltage to the remote control breaker and intelligent shunt release, the signal voltage (provided by the remote control circuit or IC card meter), and then pull the breaker handle to close position to be closed. When the need for remote control (or IC meter according to arrears of meter) the case cut off control voltage through the control system, circuit breakers should be able to break in 0.5s ≤ t ≤ 5s, while the remote control breaker also protect short-circuit and overload.

Outline and installation dimensions

Keywords: remote controlled Circuit Breaker,remote control breaker

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