Automatic switches VA 47-63 EKF PROxima: features and advantages

To protect electrical lines in the modern world, automatic switches are used. Modular devices are the most massive machines that can be found in every electrical panel: in any apartment or at home, in control cabinets in industrial plants and in shopping centers - wherever there are at least some supply lines for electrical energy. Circuit breakers are mainly used to protect cables and electrical lines from overload and short circuits. In this way, they protect electrical equipment from overheating. The line of fixed rated currents of modular automatic machines also allows limited use of them for the protection of electric motors and transformers.

Why are machines called modular? Because they have the same size housing in the form of single-pole modules, from which two-, three- and four-pole machines are assembled. The width of one module is standardized and equals 18 mm. Thus, a single-pole circuit breaker will occupy one module on a DIN rail. Some models of machines have a body width of b

Olarger than the standard module width, but it still remains a multiple of 0.5 module. In this article we will consider the VA 47-63 EKF PROxima circuit breakers, their features and advantages.

Equipment ranges and applications

Modular circuit breakers are widely used in projects of any kind. They are installed in the power supply systems of industrial enterprises, infrastructure, administrative and commercial facilities - various institutions, shopping and business centers, shops, etc. You can find compact modular machines in any floor or apartment panel, they serve as the "last line of defense" - they protect all household electrical chains. For each object, you need to select machines depending on the parameters of the electrical network.

EKF's assortment includes three series of modular equipment:

The Averes line was originally designed for the industry, it includes three series of automatic machines - with a maximum switching capacity (PKS) of 6 and 10 kA, as well as 6 kA for DC networks.

PROxima is the optimal line in terms of the ratio of high quality and affordable price, four series of switches are produced in it: VA 47-63 with PKS for 4.5 and 6 kA, VA 47-100 and VA 47-125.

In the EKF Basic line, there is one model of a budgetary circuit breaker. VA 47-29V is the most popular in projects for the construction of residential real estate.

Modular machines PROxima

Consider the PROxima line. It includes all the necessary products to complete 98% of construction and infrastructure projects.

The PROxima line includes modular circuit breakers of four series with rated currents from 0.5 to 125A.

The most popular series is VA 47-63 4.5 kA. A choice of circuit breakers with operating characteristics B, C, D. 1, 2, 3, 4 poles. With rated currents from 0.5 to 63A. All construction projects can be completed based on this line.

Where devices with an increased value of the limiting switching capacity (PKS) are needed, VA 47-63 6kA are used. In this series, you can choose a one-, two- or three-pole circuit breaker.

For industrial projects where short-circuit currents can reach 10 kA or 15 kA, automatic machines of the VA 47-100 and VA 47-125 series are used. These machines have a case of 1.5 modules, which is due to the large PCB.

Name	PKS kA	In, A	BTX	Poles
VA47-63	4,5	0,5-63	B, C, D	1-4P
VA47-63	6	6-63	B, C, D	1-4P
VA47-100	10	10-125	C, D	1-4P
VA47-125	15	80-125	C, D	1-4P

A complete set of accessories allows the PROxima range to be used in all automation projects.

As already mentioned, the EKF PROxima VA 47-63 circuit breaker is the most popular.

Why choose VA 47-63

First of all, it is a unique design developed by one of the leading design agencies. Why does a modular machine need a special design, you might ask? Primarily because it is sold at retail. VA 47-63 favorably differs in its appearance from competitors on the shelf, and the retail buyer chooses it more willingly. And at the same time it will not be in the least mistaken as a circuit breaker.

The quality of the machine is confirmed by the warranty period, which is 7 years, which is another major advantage of EKF products.

The rest of the benefits apply to professional users of the BA 47-63.

These include the ability to lock the lever. It allows you to safely repair the line protected by the machine. The electrician will be calm by blocking the machine in the off state.

The EKF VA 47-63 circuit breaker has an increased body rigidity, a molded front panel, the status window is closed transparent cover - everything is done in order to limit the plasma that is formed at the moment of opening in the event of a short circuit, body. This ensures human safety.

It would seem, when a person can be near a machine that turns off by a short circuit? But such a situation happens - this is a very crucial moment of the first switching on of the electrical installation, if the user (a competent electrician will never do this) made the wrong connection and short-circuited line. VA 47-63 in such a situation will clearly work on a short circuit and leave all the short circuit energy inside the case on the arc chute. The person will not suffer. Automatic machines, consisting of two halves on the front panel, with status windows not covered by a lid, have a chance to allow sparks to escape through the front panel, which is not safe.

There is an element in the circuit breaker that must heat up - this is a thermal release. Profiled grooves on the sides of the PROxima machine provide a more comfortable temperature level for the machine's operation, cooling it down. The machine, which has the ability to cool, works more stably.

Screws with increased hardness allow a more reliable tightening of the connected conductor, thereby providing better contact. Good contact of the conductor to be connected is very important, because if there is insufficient contact, the connection point begins to warm up, which can lead to the failure of the circuit breaker or, worst of all, to fire.

Another technical feature designed to securely hold the conductor in the terminal is the square shape of the terminal. This is done in order to securely hold not only cables with a cross section of 2.5 mm², but also 0.5 mm². We remember that the VA 47-63 product range starts with a nominal value of 0.5A, and with this current, lay a wire of 2.5 mm² meaningless and expensive.

The BA 47-63 terminals allow you to connect both copper and aluminum conductors, but not together. With copper, everything is clear - it is recommended by the PUE. Currently, a new aluminum alloy has been developed, which is close to copper in mechanical characteristics. It is this alloy that is supposed to be used in the construction of residential buildings to reduce the cost of projects. VA 47-63 is ready to work with it.

The two-position clip allows the VA 47-63 to be conveniently mounted on a DIN rail. A special recess for a Phillips screwdriver allows, if necessary, to remove the automatic switch with a Phillips screwdriver, which electricians usually use when connecting conductors. This is a handy feature of the EKF vending machines. For machines of other brands, you will need a flat screwdriver, since the hole is not enough to hook the machine clamp.

The listed advantages are possessed not only by the circuit breakers, but also by all the products of the EKF PROxima line - both residual current circuit breakers, RCDs, and load breakers.

Applying modular automation of the PROxima series, it is possible to assemble any project in construction and most of projects in industry.

To summarize the advantages, PROxima:

• Optimal functionality
• Ensures convenience and speed of installation
• Has a 7-year warranty

PROxima circuit breakers can be purchased throughout Russia and in the CIS countries from the official partners of EKF and in retail stores. A complete list of official partners can be found here: https://ekfgroup.com/gde-kupit? category #