Product Details

Summarize

TN1M7 series electronic plastic shell circuit breaker (hereinafter referred to as circuit breaker), the circuit breaker has a small size, high breaking capacity, short flying arc, anti-vibration characteristics of its rated insulation voltage of 800V, suitable for AC 50Hz. rated operating voltage AC400V, rated current to 1250A and the following distribution network, for the distribution of power and protection of circuits and power supply equipment from overload, Short-circuit and under-voltage fault damage. It can also be used for infrequent switching of lines and infrequent starting of motors. Circuit breakers can be installed vertically (i.e. vertical installation) or horizontally (i.e. horizontal installation).

Circuit breakers are suitable for isolation, symbolized by“”.

This product conforms to GB14048.2 and 1EC60947-2 standards.

Main Features of Circuit Breakers

TN1M7 series electronic plastic-shell circuit breaker has three-stage protection function, the use of category B disconnection and connected in the same circuit with other short-circuit protection devices in the short-circuit conditions with selective cooperation; this circuit breaker has five kinds of release characteristics to choose, the user can be adjusted according to the requirements of the load current on the release of the setting; electronic release by the circuit breaker itself to provide the energy, the current signals and the power supply from the current transformer installed in the circuit breaker; fire special has an overload not release only alarm function, when the load current overload operation, the circuit breaker does not release, the output of a passive contact, drive the The power supply comes from the current transformer installed in the circuit breaker; the fire-fighting special-purpose circuit breaker has the function of alarming only when the load current is overloaded, the circuit breaker will not be released and will output a passive contact to drive the corresponding alarm device; the dimensions are the same as those of the SHM1 series of plastic-shelled circuit breakers with the same specifications, and the installation is interchangeable.

Normal Use Environment

1、The altitude of the installation place does not exceed 2000m.

2、the surrounding air temperature does not exceed +40 ° C, and its average temperature value within 24h does not exceed +35 ° C, the lower limit of the surrounding air temperature is -5 ° C.

3、the temperature of +40 ° C, the relative humidity of the air does not exceed 50%, at lower temperatures can allow a higher relative humidity, such as 20 ° C up to 90%, due to temperature changes occasionally produce condensation on the product should take measures.

4、Pollution level is 3.

5、The installation category of the main circuit of the circuit breaker is Class II, and the installation category of the auxiliary and control circuits not connected to the main circuit is Class L.

6、Use category is A or B.

Model Meaning

Note:

1)No code for circuit breaker for power distribution,circuit breaker for motor protection is indicated by 2.

2) No code for direct operation by handle, motorized operation is indicated by P, rotating handle is indicated by z.