What set the panel - RCDs or RCBOs

High-quality and well-assembled switchboard - a guarantee that your home network will last a long time and in case of an emergency situation of the installed protective equipment is disconnected damaged line. Standards provided to protect the device not only from emerging short-circuit and overload protection, but also on the leakage current.

Short circuit and overload currents perfectly cut off machines, and the leak current RCD cope, but these functions are combined in differential machines. So it's better to put a bunch of machine + RCD or Emergency circuit breakers (RCBOs - automatic differential current switch)? Let's deal together.

This article was created with the support of EATON.

Differential automatic or RCD that choose

So, the very first thing I want to say is that there is not, in principle, the concept of "better": the RCD, and in conjunction with a machine gun and automatic differential have the same functionality. It's like comparing summer and winter diesel fuel: it is designed for one purpose, but work in different operating conditions.

Similarly, with our safety devices. Before you make a final choice, it is necessary to determine the conditions (constrained switchboard, no money, and so on. D.). Let's look at the different options and see in what cases it is better to install.

Small shield and dimensions of devices

Take this option when you have a fairly modest size distribution board, but still filled almost to capacity devices protecting each his line.

If you decide to supplement another line and protect her bunch RCD + machine, get ready for that panel should be free to three modular space *, as RCD-module occupies two seats, and automatic - one.

* Standard size of one unit measured along the width and is 18 mm;

And by selecting a differential machine, you use only two-unit space.

It turns out that in this embodiment, when a panel space is limited, and replace a billboard at the more spacious there is neither the money nor the desire, the best option is to use the Emergency circuit breakers.

Easy to connect

Any installed equipment necessary to tie, and the greater the number of products you need to tie, the more difficult it will be the connection diagram in the switchboard. If we consider this aspect, it is much easier to connect Emergency circuit breakers:

than the RCD and the machine in tandem:

Of course, it is rather dubious distinction, since for any electrician is a matter of five minutes, but it is there and, in my opinion, the choice you need to know the full information.

Service when disconnected

We put you safety devices, so that they turned off the network in the event of an emergency situation. And after a trip as possible to help you quickly find and eliminate the cause of the shutdown.

So, if you happen off the line and we have set Differential automatic, we will have three likely causes of tripping:

- short circuit,
- Overload;
- leakage current.

And when looking for will need to check all three options, which sometimes takes a very long time.

If you are set on the same line and the RCD circuit breaker in case of short circuit or overload you turn off the machine, and the RCD will remain on. And you're looking for is a place of short circuit or cause an overload, and even do not have to think about the leak.

financial issue

Like it or not, everything that has a weight has been described above, but not decisive. The main issue is money. Let's look at the situation in several ways:

- A single connection

The term "single connection" refers to a situation when you are buying electrical appliances such as electric oven capacity of 2 kW, it decided to connect a separate line.

To this end, if you decide to choose a bunch of RCD + machine, you need to buy, such as automatic firms EATON Series xPole Home HL-C16 / 1 (156.70 rub.) and residual current device of the same firm Series HNC-25/2/003 (1483.80 rub.). This bundle will cost 1640.50 rubles (the price at March 2019).

If you decide to install a differential machine, for example, EATON xPole Home HNB-C16 / 1N / 003, it would cost 1744.22 rubles.

As you can see, the difference is not so significant, and will no matter what you choose, because in fact, and in another case, the reliability is sufficient.

- Assembly panel

Now let's consider the case when you collect (or fully upgrade) your switchboard, and first consider the option with the RCD and a group of machines.

Namely, a very common, typical with RCD version:

1) rosette kitchen line;

2) bath;

3) washing machine;

4) illumination;

5) outlet in the house.

In this embodiment, we require 4 machine 16 A 1 10 A (light). But with the RCD has several options: in one case, on each line will raise its RCD, but it is expensive, and this option is rarely used.

In another - and it is much easier - with RCD protected only responsible line - bathroom, washing machine, sockets in the kitchen. And that means we need only 3 RCD. Consequently, the cost is:

- HL-C16 / 1 - 4 pieces - 156,70 × 4 = 626.80 rub.

- HL-C10 / 1 - 1 item - 155.69 rubles.

- HNC-25/2/003 - 3shtuki - 1881,12 × 3 = 5643.36 rub.

And it turns out that such a panel would cost 6425.85 rubles.

Now let's consider the case with differential automata.

In this case, we will raise Emergency circuit breakers for each line. We need four Emergency circuit breakers HNB-C16 / 1N / 003 (1744.22 rub.) And one HNB-C10 / 1N / 003 (2011.00 RUB). Expenditures amounted to 8987.88 rubles. That, you see, much more than the first version with the RCD and circuit breakers.

Note. I have to say that in any form will be provided with reliable protection of your home network - the whole question of money.

conclusion

So, let's summarize all the above, if you just need to add a line to your switchboard, that avtomat- differential is an ideal solution. If you collect a shield from the ground, the machines used and the RCD will be economically profitable.

Like this, then evaluate it and go on Like Company Zen-channel EATON- where you can also find a lot of interesting things.

Thank you for your attention!