9 circuits correct connection voltage relay

So simple circuit layout leads from the opening of the circuit breaker in the apartment to the voltage monitoring relay is as follows:

In this case, a network of single-phase (220 V) and the load is not more than 7 kW, therefore, not further need to connect a magnetic contactorcontactor or dIN rail mounting.If the load is more than 7 kW, it is advisable to connect via the starter as shown in the second circuit connecting the relay RN-113:

immediately draw your attention to the fact that there must be an RCD in addition to the network of the overvoltage protection device in the control panel orEmergency circuit breakers to protect the inhabitants of the house from the leakage currents, which may cause electric shock to persons.Schematic diagram of the connection voltage switch and RCD (or Emergency circuit breakers) looks like this:

If you have a private house a three-phase network of 380 volts, the safety device connection can be made for one of two schemes:

first recommended in the case if the house is no three-phase consumers - a strong electric stove or boiler on 380 V. If you are using a 3-phase motors, it is necessary to protect their respective voltage relay, for example, RNPP-311 or ILV 3-14-08, whose scheme we will provide:

addition, be sure to check with the video lessons, which lucidly explained the whole process of installation:

As you can see, in both cases there is an additional magnetic switch, which allows you to switch high loads (more than 7 kW).In addition, the actuator allows remote control of protection that makes the voltage relay wiring diagram is very convenient!