Rating of the best RCD manufacturers for 2022

Some people prefer difavtomatam, while others install residual current devices or RCDs. What it is? They cannot be classified as "novelties", however, over the past ten years, the design has undergone significant modifications.

What is the device for?

The installation of automatic switches allows you to protect the wiring from various mechanical damage and burnout. The unit conducts current through itself in normal mode and disconnects the devices from the network in the event of an overload or other emergency. The selection criteria used are varied. The most common characteristics include:

• marking (series):
• type of equipment used;
• allowable load;
• reliability;
• average price.

An important aspect is considered to be reviews about the model you like. When choosing, you should also evaluate the popularity of the selected product. The manufacturer is important and it is recommended that the chosen brand be on the market for 5 years. Recommendations from experts are also taken into account.

Over time, the insulation installed on the electrician begins to age. At the moment of closing the wires, a person can be shocked, provided that the structure has not been grounded. If the wires are in contact with the walls, then electricity leaks can pass through them, which can lead to a fire. Automated protection devices are used at home and are triggered by overloads and leaks. It passes through the structure itself and is measured in "A" - amperes.

Dangerous for humans is the leakage current, which exceeds the mark of 10 mA. This limit is ten times less than the one to which the automation will respond.

Ignition can occur with a leakage of 0.3 A or more.It is worth noting that in the event of a short circuit, the RCD will not work, therefore they are not a full-fledged replacement for automation. For full protection of the electrical network, it is recommended to use differential machines. The choice of automatic type switches is based on the rated current. The sensitivity of RCDs is measured in milliamps. Their design features are such that shutdown occurs with a leakage of 30 mA or less. For fire protection, this figure increases and is 100-300 mA.

Design features and principle of operation

What are the main elements of the device used for a single-phase network:

1. "Test". The button is equipped with a resistor. It is used as a unit health controller. It simulates a possible leakage of electricity. During its operation, the power supply will be turned off for those users who are under its protection. It enters the consumer through a phase conductor - neutral, after which it returns to the consumer again. In the absence of visible leakage, which is considered a normal operating condition, the primary reading on the windings will be equivalent. It happens according to the principle: how much has come, so much will go.
2. executive device. It consists of a trigger mechanism, several power contacts and a spring wire. On the primary windings, the currents have the opposite direction. However, a zero value is observed for the total magnetic flux. Induced in the core, they will cancel each other out.
3. Starting body. Direct element. It is a sensitive magnetoelectric type relay.
4. Differential type transformer. Ring with two primary windings. Formed by neutral and phase conductors.There is also a secondary winding element. Connects to the relay via a conductor.

If the device fixes any deviation from the normal mode of operation (leakage), the body of the device fixes this. Then the following happens:

1. In addition to the load current, a leakage current will also appear in the primary winding.
2. There will be a difference between the phase conductor and the neutral in the current indicator in the primary winding. The magnetic fluxes that are induced on the core will differ in magnitude.
3. Exceeding the zero value, the difference in flows will be fixed. It will induce a magnetic field in the secondary coil, which will be converted into electricity.
4. The relay will operate in the secondary winding from electricity.
5. Now the trigger element should cope with its function. It will have an effect on the final element, which will lead to the shutdown of the entire contact group. This will de-energize the appliance with the detected leak.

It should be noted that such equipment has a modular design. On the back cover of the device, you can find latches and slots for mounting the unit on a DIN rail. Often the design is offered in a plastic case. The material used does not support combustion.

What are

Conventionally, all available protection devices can be divided according to certain parameters. These include:

1. Number of poles. There are four-pole, which are used for three-phase networks and two-pole. The latter are used in combination with single-phase networks.
2. Mounting methods. You can install devices based on their type. There are independent and stationary models.
3. Functional. The design may or may not be equipped with overcurrent protection.
4. Way to exercise control.There can be independent and voltage dependent models.

In order to choose a really high-quality model of equipment, you must first consult with a specialist. Popular models may be less effective than domestically produced budget designs. However, the most common mistake, according to buyers and experts, is not the wrong model at all, but non-compliance with the step-by-step instructions for installing the purchased equipment. Independent connection of the product is only possible if there is some experience with equipment of this type. RCDs can be of several types. We propose to consider each of them separately.

RCD electromechanical

Such samples are considered to be "veterans" among protective equipment. They are able to protect the device from leaks. A patent for it was opened in 1928. It is this type of residual current protection that is considered mandatory in most European countries, and it is installed at the construction stage. The presence of a constant voltage source for the mechanism does not play a special role, since it works fine without it. In this case, the source for it will be the leak itself, to which the device reacts.

Repair of this design is extremely convenient, because it is based on the reliability and accuracy of mechanics. The magnetic core of the installed transformer has a high sensitivity index. It is also responsible for time and temperature stability. For its manufacture, amorphous and nanocrystalline alloys are used. They have excellent magnetic permeability.

• no need for auxiliary power supplies;
• simplicity of design;
• high reliability;
• a break in the neutral conductor will not affect the functionality of the equipment;
• reliability (leakage operation occurs in any case and regardless of the presence of voltage in the network used).

• depending on the manufacturer, the brand markup can increase the cost of the product several times (the cost is lower in the online store).

Diphautomats or RCDs with overcurrent protection

This type of equipment combines the best qualities of circuit breakers and RCDs. Able to protect the wiring in the event of a short circuit and overload.

• it is not difficult to connect the device correctly, thanks to detailed instructions from the manufacturer;
• saving space in the switchboard;
• efficiency (such a unit will cost less than two separately).

It is not recommended to install differentials on lines to which office equipment and computers are connected.

• using devices for their intended purpose, there are false positives that are provoked by technology;
• after triggering, it is not possible to determine the “problem” with accuracy;
• it is worth paying attention to the fact that if the device fails, the line remains without any protection.

RCD electronic type

An amplifier is installed inside the equipment on a transistor or microcircuit. Due to this, the device will react to an insignificant indicator that will pass to the secondary winding. Amplifying it to the size of a small pulse, the relay will start. However, for normal operation of the device, you will need a constant source on the network.Why is it necessary to install such a unit in the absence of a constant voltage in the network? How can he protect the equipment? In the event that a line break occurred due to a breakdown of the neutral conductor in the circuit up to the device itself, then it will continue to flow to the electrical devices themselves, which is extremely dangerous for humans.

• small sizes;
• acceptable cost.

• the description proves that the design is incredibly complex (the more complex the device, the easier it is to disable it);
• a break in the neutral makes the unit completely inoperable;
• normal operation is possible only if there is a constant voltage in the network.

Portable type RCD - socket

Detailed reviews of such devices proved that it is impossible to assemble it with your own hands. Do not try to make a protective device yourself at home. This type of solution can be called the simplest, because the design belongs to the category of portable and is assembled in the form of sockets. Inexpensive models are often used in rooms with a high level of humidity (bathroom, kitchen). If necessary, it can be connected in any room to any device. The best manufacturers, in most cases, produce them in the form of network adapters that are equipped with a plug connector.

A review of the instructions will show how easy it is to use the device. Even a child can cope with the task. The device is connected directly to the socket, after which the electrical device is connected.

Extension cords equipped with similar functions are considered no less effective. They may have several consumers. There is no consensus on which device is better to buy.However, if you wish, you can find universal designs on the market that can be used instead of an electrical outlet or connected to it via an extension cord.

• after operation, it is easy to determine the device with damaged insulation;
• the advice of an electrician is not needed, because installation is within the power of everyone;
• interference with the wiring is excluded.

• it is impossible to say with accuracy how much the device costs, since the margins on the brand are very significant;
• it is more profitable to order the model you like online;
• limited space near the outlet will not allow you to install the necessary equipment;
• the harmony and design of the room will be violated, since it is not possible to hide such a unit.

Rating of the best domestic RCD manufacturers

DEKraft

This Russian brand tops the rating of quality RCD manufacturers. Focused primarily on domestic stores. In addition to residual current devices, the company manufactures various equipment that is supplied to both small and large enterprises. A characteristic feature of the designs can be called an acceptable cost. Despite the low price, the quality of the products is at a high level. The equipment produced by them belongs to the category of affordable ones. The world first got acquainted with the company's products in 2007. The bar of quality set more than ten years ago is still present today.

Each product offered by them fully complies with the existing European safety requirements. After a series of various technical tests, the goods are transported to Europe. The number of returns is decreasing every year, and the trust from the buyers is only increasing. A huge warehouse is located in Yekaterinburg and another in Moscow.

DEKraft-03 4P 40A 30mA AC 6KA

The affordable cost of the structure is due to the fact that the assembly is carried out in China. However, this did not affect the quality of the products. The manufacturer claims that the model is designed for 6 thousand cycles. Recovery and disconnection after overheating is carried out no more than 25,000 times.

The average price is 1000 rubles.

• all inscriptions in Russian;
• the possibility of wholesale sales;
• repeated quality control during assembly.

• specific section for cable entry;
• nominal value 40 A.

DEKraft-03 2P 30A 30mA AC 6KA

One of the new products that topped the ratings of the highest quality RCDs this year. The leakage rate is 30 mA. If necessary, the installed design can be modified. In this case, the indicator will increase to 300 mA. Suitable for both multi-room apartments and private houses.

The price varies from 950 rubles. up to 1500 rub.

• high level of security;
• guarantee period;
• delivery at the expense of the manufacturer;
• efficiency;
• acceptable cost;
• reliability.

• not identified.

KEAZ

Manufacturer in the domestic market - for 75 years. Engaged in the manufacture of both RCDs and standard machines. A novelty is the "optima" series. Designs for alternating and direct current are calculated.

• compact dimensions;
• the possibility of purchasing additional equipment (release devices, signal modules).

• high cost of new products;
• 1-2 year warranty.

KEAZ VD1-63-2240-AS-UHL4

A two-pole RCD design, which has a nominal value of 40 A.Normal operation is carried out at 230 V. It has dimensions: 83/36/74.3 mm. Used for networks with a frequency of 50 Hz. The neutral in it must be grounded. The nominal voltage indicator should not exceed 400 V. It is used as a person's protection against possible electric shock when in contact with faulty electrical appliances and installations. It is used to prevent fires and ignitions due to leakage in and short circuits.

Approximate cost - 700 rubles.

• reliability;
• efficiency;
• high level of security.

• allowable wire cross-section - 25 mm;
• the inability to carry out independent replacement of components.

KEAZ VD1-63-2116-AS-UHL4

The use of such equipment requires a solid ground of the applicable electrical circuit. The AC frequency will be 50 Hz. It is recommended to install, first of all, to protect people from possible electric shock. This can happen due to a violation of the tightness of the wires or a malfunction of the installed device. Also, the unit is considered an excellent protection against possible ignition of wiring and electrical equipment. If necessary, the model easily opens and disables the circuit used. Where could I buy? On the manufacturer's website. Such a unit will cost 1200 rubles.

• efficiency;
• operational period;
• quality assembly;
• compliance with the specified quality standards (GOST 61008-1).

• not identified.

Contactor

Devices are used to protect electrical appliances from sudden voltage surges.This type of structure can easily fit into a regular shield. It has a separate housing (often plastic), which can be covered with a casing. The parameters regarding current will depend, first of all, on the series used.

• high quality;
• the presence of engraving on the case;
• the ability to adjust individual parameters.

• from open contacts there is a risk of electric shock;
• there are very few models.

Contactor 2P 40A 30MA type AC-100

An excellent tool for protecting people from possible electric shock in case of accidental contact with individual current-carrying elements of electrical equipment. An inexpensive and effective device allows you to exclude the ignition of equipment due to its malfunction or in the event of a short circuit (to the ground or to the case). For normal operation, a rated voltage of 230-400 V is required. The standard frequency is 50/60 Hz. There is no own energy consumption.

Price - 1300 rubles.

• operational period;
• high class of protection;
• the possibility of additional equipment;
• simple installation.

• no short-term shutdown delay;
• lack of selective protection.

Contactor 4P 32A AC type

Installation is carried out in multi-room apartments and private houses. Durable plastic housing is flame retardant and withstands high temperatures. All necessary levels of protection are applied, which allow the unit to be used in combination with electrical equipment of any type. Quality product from one of the best domestic firms on the market.

The set will cost the buyer 1600 rubles.

• acceptable cost;
• reliability;
• efficiency;
• ease of use.

• not identified.

IEK

The company's products are assembled exclusively in China. However, this in no way reduces the quality of goods. Modular type devices with a rated current of 0.5-64 A have different protection classes. Most models are equipped with special indicator windows for greater ease of use.

• the triggering system can be either electromagnetic or mechanical;
• the body is made of durable materials;
• acceptable cost.

• when it comes to Chinese assembly, there is a high risk of purchasing a defective product;
• in case of short circuits, a slight burning is observed;
• assembly is not carried out on the territory of Russia.

IEK AD-12 2P 30 mA S

Excellent quality product. Reliable and safe design. The low cost in no way affected the build quality or the efficiency of the unit. Based on the manufacturer's statement, the module will last at least five years without the need for regular user intervention. The standard protection class is ip20. However, it is not recommended to mount the device in those rooms where there is an increased indicator of humidity (kitchen, basement, bathroom). This will not affect the performance, but its service life will be significantly reduced. Quick installation even for a beginner. The case is made of high-strength materials that are resistant to temperature fluctuations.

Price - 850 rubles.

• 5 years warranty;
• affordable price;
• efficiency;
• emergency shutdown function;
• durable body.

• not identified.

IEK RCBO 32M 2P 10 mA C

It is rightfully considered one of the most successful designs presented by the manufacturer. The maximum network indicator is 230 V. The high demand for the model is due to the presence of built-in protection, which is triggered in the event of an emergency. At the point of connection of the conductor there is additional protection. This had a positive effect on the operational life of the kit. The company provides a guarantee for the product for 5 years, which is considered more than a high indicator.

The set will cost 800-1200 rubles.

• auxiliary switch;
• compact dimensions;
• ease of use;
• fast installation;
• durable body.

• inability to upgrade.

RCD which foreign company is better to buy

General Electric

The brand leads numerous ratings, largely due to the high wear resistance of its own products, the cost of which is more than acceptable. The switches have a rated power of 0.5 A and a maximum of 63A. Connection is carried out to networks for 230V and up to 400V.

• compact dimensions;
• more than thirty types of models;
• the toggle switch has a relief surface;
• the series used for private houses is designed for 20,000 network breaks and 10,000 operations.

• are applied under "C" trip class;
• the maximum indicator is 63A.

A feature of the product is the presence in the devices "TeleRec". The relay belongs to the category of automatic platoon (repeated). It is applied in a complex after repeated operation. Thus, it was possible to significantly reduce the cost of subsequent maintenance of equipment of the RCD type. For normal operation, human intervention is not provided.After disabling the protection, the device will automatically make six attempts to re-enable. After that, blocking occurs, and subsequent actions will be carried out in manual mode.

GE DMS line

The "test" button is equipped with an orange lever and is adapted in such a way as to completely eliminate the risk of accidental pressing. It has ip20 protection, which is already considered the norm for units of this type. Thus, a person will be protected from possible electric shock by contacting the wires. It is possible to connect conductors whose cross section is equivalent to 35 mm (2x16 mm).

Cost: 1500 rubles. and higher.

• reliability;
• guarantee period;
• service maintenance;
• the ability to connect GE bus;
• clamps have several stable positions.

• not identified.

ABB

This brand is rightfully included in the TOP-best manufacturers of electrical protective equipment. It has established itself as a high-quality and reliable brand, time-tested and numerous customers. More expensive models do not burn out even under constant power surges. Trouble-free operation for many years, speaks in favor of the equipment of this manufacturer. The company has been operating on the market for more than a hundred years.

ABB 30mA AC FH202

This model is one of the most famous from this brand. In addition to impressive performance, the device is characterized by trouble-free operation. The body is made of high quality plastic. Designed for 15 thousand cycles.

The cost is 2000 rubles. and higher.

• all edges are even;
• switches are equipped with four poles;
• high security;
• ease of installation;
• compact dimensions.

• there are few "D" class models.

ABB DS-201 2P 30mA C

Such a unit is useful in all, without exception, houses. Quality device at an affordable price. The current leakage indicator is 30 mA. The product is certified, as evidenced by the relevant document, which is provided to the buyer. This is what indicates the high quality and level of security of the purchased device.

Price - 3200 rubles.

• reliability;
• small size;
• quality assembly;
• acceptable cost.

• not detected.

ABB OVR T2 4L 80-440s P TS QS

The model is in demand among modern consumers. Helps reduce the impact of negative current discharge. Among the features, it is necessary to highlight the implemented IT configurations. It should be noted that there are auxiliary fuses that will not allow the device to break due to overloads. An optical type of signal is used. Convenient direct rail mounting has four modules to help save space in the switchboard.

Approximate cost - 24700 rubles.

• backup fuse;
• clear set of functions;
• high-quality assembly and materials used;
• acceptable level of protection.

• high price.

Schneider Electric

The foreign product line is characterized by high workmanship and reasonable cost. Mounted on a DIN rail. Responds to significant power surges almost instantly. Rated value: 0.5-63 A.

• reliability;
• durability;
• several single-phase may be in one box;
• a wide range of models;
• terminal holes are of high quality;
• equipment for different poles.

• overpriced.

Schneider Electric Acti9 4P 100A 300mA AC-TYPE

Modular switchgear that combines maximum safety and efficiency. The design concentrates the latest innovations and data that have been accumulated over the past fifty years. We are talking about the manufacture of modular devices. Applicable to rooms of any type and dimensions. It can also be installed in polluted networks and environments where uninterrupted instrument operation is critical. The "visitrip" system is used to identify the problem area.

• reliability;
• long service life;
• compactness;
• well-known and time-tested brand.

• cost - the kit will cost the buyer 34 thousand rubles.

Schneider Electric 3rd floor + N 20 kA Easy9

Which company is better to buy an RCD for a home? Only verified. It is to these that Schneider Electric is referred. Installation is carried out both on the territory of private estates and industrial sites. This type of device is able to protect equipment from lightning strikes. It works in combination with three-phase networks, in which the rated voltage level is equal to 400 V. The discharge current indicator is 20 kA. Such characteristics testify to the durability and high quality of the equipment used.

The cost of the kit will be 9400 rubles.

• reliability;
• prolonged use;
• affordable price;
• famous brand;
• small dimensions.

• not identified.

It should be noted that high-quality equipment has the appropriate marking on the body. There should not be any scratches, chips or notches.Also included should be a connection manual and a device passport.