18 best voltage regulators

Review of the best according to the editorial board. On the selection criteria. This material is subjective and does not constitute advertising and does not serve as a purchase guide. Before buying, you need to consult with a specialist.

There are dozens of electrical appliances in every house or apartment. And if some of them are unpretentious to the quality of electricity, others are afraid of strong voltage fluctuations. To keep expensive refrigerators, computers, or gas boilers from breaking down, homeowners purchase voltage stabilizers. However, not all models available in the retail network are able to solve the problem of unstable electricity. Today, the consumer is offered different designs, products differ in power and price. When choosing the best device for your home, experts recommend paying attention to several parameters.

1. A type. Structurally, stabilizers are of relay type, electromechanical, hybrid, electronic. Each of them has its own merits and limitations. You should be aware of them so as not to be disappointed while working.
2. Before going to the store, it is helpful to know the voltage peaks in your single-phase network. Usually there is a decrease to 90 … 140 V, but sometimes there are bursts of up to 270 V. In this range of input voltages, the stabilizer should work successfully.
3. Load. It is imperative to calculate what kind of load the stabilizer will experience. To do this, add up the power of the refrigerator, TV, computer, gas boiler and other electrical equipment sensitive to voltage drops. It is desirable that the active power of the stabilizer exceeds the obtained value by 20%. For example, for a computer and a TV, a device power of 500-1000 W will be enough.
4. Efficiency. The voltage stabilizer consumes electrical energy, so efficiency will be an important indicator. The higher it is, the more efficiently the device will work and the less electricity will be lost.
5. Accuracy. Often, users have electrical equipment that requires voltage stability. In this case, experts advise paying attention to the accuracy of the stabilization. This value indicates the error with which the voltage will come out of the stabilizer. Regulatory documents limit this indicator to 8%, but it is better to choose models with an accuracy below 5%.
6. Noise. When connecting the stabilizer to a refrigerator or gas boiler, the device operates around the clock. Quiet operation often comes first, especially when the device is located next to a nursery or bedroom.
7. Although the stabilizer is considered a stationary device, bulky and heavy products often give users a lot of trouble. If you really can't hide it behind the curtain, then you will have to select a model taking into account the appearance.

Our rating includes the 18 best voltage stabilizers. When determining the winners, the opinions of experts and consumer reviews were taken into account.

A table of the advantages and disadvantages of various types of stabilizers (relay, electronic, hybrid, electromechanical, etc.)

Stabilizer type	Advantages	disadvantages
Relay	+ simple design + affordable price + wide range	– step regulation – noisy work – low stabilization accuracy
Electronic	+ minimum error + fast response + quiet operation + high efficiency	– high price – expensive repairs – sensitivity to overloads
Electromechanical	+ continuous voltage regulation + high stabilization accuracy + affordable price	– low performance – fragility – bulky and heavy
Inverter	+ high accuracy + unique performance + stepless regulation + wide input voltage range	– high price – the range of input voltages changes from the size of the load
Hybrid	+ smooth voltage regulation + compactness + durability + wide operating temperature range	– high price – noisy work

What is better to choose a voltage regulator or a surge protector.

Network device type	Advantages	disadvantages
Voltage regulator	+ smooths out voltage drops + protects equipment from short circuits + prevents appliances from overheating	– high price – not all models suppress interference
Network filter	+ affordable price + effective interference suppression + suppresses voltage pulses	– useless with power surges – ground connection required

Rating of the best voltage regulators

Nomination	a place	Name of product	price
The best relay voltage stabilizers (power up to 1 kW)	1	RESANTA LUX ASN-1000N / 1-Ts	RUB 2,860
	2	Wester STB-1000	RUB 2,999
	3	Quattro Elementi Stabilia 1000	RUB 1 809
	4	Powerman AVS 1000D	RUB 1,780
The best 5 kW relay voltage regulators	1	Wester STB-5000	RUB 7,499
	2	RUCELF SRWII-6000-L	RUB 9,050
	3	RESANTA ACH-5000/1-Ts	RUB 6,190
The best relay voltage regulators for 12 kW	1	RUCELF SRFII-12000-L	RUB 15 714
	2	Wester STB-10000	RUB 11,999
	3	RUCELF SRWII-12000-L	RUB 16,257
The best ultra-precise stabilizers for gas boilers	1	PROGRESS 8000SL	RUB 58 600
	2	Lider PS10000W-50	RUB 46,700
The best electromechanical voltage stabilizers up to 10 kW	1	RUCELF SDWII-12000-L	19 397 RUB
	2	RESANTA ACH-10000/1-EM	RUB 15,040
The best electronic voltage regulators	1	BASTION SKAT STM-20000	RUB 43,000
	2	Energy Classic 7500	RUB 26,500
Best Double Conversion Voltage Regulator	1	Calm IS1500	RUB 12 949
Best Hybrid Voltage Regulator	1	Hybrid SNVT-6000/3	RUB 29,700

The best relay voltage stabilizers (power up to 1 kW)

The most affordable and simplest are low-power relay voltage stabilizers. They are reliable in operation, maintainable, but emit clicking sounds during operation. The following models came to the attention of experts.

RESANTA LUX ASN-1000N / 1-Ts

Rating: 4.9

The stabilizer RESANTA LUX ASN-1000N / 1-Ts can boast of stable demand in the domestic market. The model is popular for its simplicity of design and decent active power (1 kW). Few of the budget devices can compete with the product from Latvia. The input voltage can fluctuate between 140-260 V, the manufacturer has equipped the stabilizer with protection against overheating and interference. The product is most often purchased for home use, a small margin of error (8%) should not confuse buyers.

Users note the reliability of the stabilizer, affordability, effective smoothing of voltage drops in the network. The disadvantages include the unpleasant smell of plastic in the first days of work.

Advantages

• high-quality assembly;
• two sockets;
• affordable price;
• effective smoothing of voltage surges.

disadvantages

• the smell of plastic.

Wester STB-1000

Rating: 4.8

The Wester STB-1000 small floor stabilizer was liked by its ease of installation and quiet operation. The model is able to regulate the voltage in the network, narrowing the range from 140-260 V at the input to 202-238 V at the output. The error of the device is 8%. The model reliably protects homeowners' appliances from overheating, voltage surges and short circuits in the network. Information is shown on a digital display. The stabilizer is air cooled, it can operate in the temperature range 0-40 ° C.

Experts gave the product the second place in the rating for its lightness and noiselessness. Users note good stabilization, it copes with the protection of TVs and refrigerators. Only the cost of the model is slightly higher than that of the winner.

Advantages

• well stabilizes the voltage in the network;
• not heated;
• reliably protects against short-circuit;
• quiet work.

disadvantages

• the light clicks and blinks when the relay is activated.

Quattro Elementi Stabilia 1000

Rating: 4.7

The largest voltage drops in the household network (140-270 V) can be smoothed out by the Italian stabilizer Quattro Elementi Stabilia 1000. Although the model is inferior to the leaders in power (600 W), the demand for the product in Russia is quite high. Users of computer equipment became the most frequent buyers. The manufacturer managed to achieve high efficiency from the device (up to 98%). In the event of an unforeseen power outage, the stabilizer delays start-up, and a three-stage protection prevents failure due to short-circuit, overheating or power surges.

In the reviews, users note such advantages of the device as lightness (2.7 kg), compactness, and affordability. The model is on the 3rd line of the rating due to power limitations.

Advantages

• high efficiency;
• lightness and compactness;
• affordable price;
• three-stage protection.

disadvantages

• low power.

Powerman AVS 1000D

Rating: 4.7

The Powerman AVS 1000D stabilizer can save expensive electrical appliances from a whole set of troubles in the household network. This is undervoltage or overvoltage (120-260 V), impulse voltage surges, short circuit. When the network is disconnected, the standard connection delay is 6 seconds, and the extended delay is up to 3 minutes. The device has a high efficiency (98%), a small error (8%), good power (800 W). Moreover, the device is sold at the lowest price, which attracts the attention of potential buyers.

The owners of the device note compactness and lightness, low price and reliable operation. Of the shortcomings, there is a loud clicking of the relay, which limits the use in residential premises.

Advantages

• low price;
• compactness;
• high efficiency;
• reliability.

disadvantages

• loud clicking of the relay;
• flickering of incandescent bulbs when switching keys.

The best 5 kW relay voltage regulators

You can connect several household electrical appliances to a relay stabilizer with a power of up to 5 kW. Users use these models to protect computers, refrigerators, and computer hardware. Here are some good ones.

Wester STB-5000

Rating: 4.9

One of the most reliable and durable stabilizers is the Wester STB-5000 model. Although the device does not have a record power (4 kW), it can smooth out voltage drops in the range of 140-260 V for a long time. To prevent the device from overheating during operation, the manufacturer has equipped it with a forced cooling type. The device is compact and lightweight (10.7 kg).

Users speak flatteringly about the performance of the stabilizer, ease of use, compliance with the declared characteristics. The device is distinguished by its silent operation. Of the shortcomings, there is a deterioration in performance at negative temperatures.

Advantages

• high-quality manufacturing;
• light weight;
• forced cooling;
• quiet work.

disadvantages

• performance deteriorates at temperatures below 0.

RUCELF SRWII-6000-L

Rating: 4.8

An efficient household device is the RUCELF SRWII-6000-L relay stabilizer. The model got into the second line of our rating for its high active power (5 kW). Experts distinguish a wide range of input voltages (95-280 V), high efficiency (98%), stabilization accuracy (8%). The operation of the device is controlled by a microprocessor, thanks to the large display, the readings can be monitored from a distance. The device is wall-mounted and naturally cooled.

Users speak flatteringly about the stabilizer response speed, power, and a clear dial. The device does not click loudly, so it does not interfere with the rest of the smallest family members. Also, the owners note the stylish appearance of the device. The disadvantages include the high price.

Advantages

• high power;
• large display;
• wide range of input voltages;
• quiet work.

disadvantages

• high price.

RESANTA ACH-5000/1-Ts

Rating: 4.8

The Latvian stabilizer RESANTA ACH-5000/1-Ts has a high active power (5 kW). It effectively balances the voltage spread from 140 to 260 V. The floor-standing appliance can operate with a maximum current of up to 60 Hz. The device protects household electrical appliances from interference, short circuits and power surges. The response time is 7 ms and the stabilization accuracy is 8%. Experts gave the model the third place for free cooling and weight (13 kg).

Consumers note the excellent value for money stabilizer, reliable protection of home appliances from power outages. Since the model has a relay design, it does not always cope with sudden power surges.

Advantages

• affordable price;
• high power;
• high-quality assembly.

disadvantages

• small handles;
• the smell of plastic in the first days of operation.

The best relay voltage regulators for 12 kW

A large number of high power electrical appliances can protect 12 kW stabilizers. They can be used not only in private homes, but also in offices and specialized workshops. Experts have selected several models for the rating.

RUCELF SRFII-12000-L

Rating: 4.9

High active power (10 kW) and precise stabilization (3.5%) are the main assets of the RUCELF SRFII-12000-L relay stabilizer. The device is able to equalize voltage drops in single-phase power networks. The model is made in a floor-standing version, the productive unit is forcedly cooled. The manufacturer has provided for the terminal connection of the wires; it is also possible to connect devices that do not require stabilization to the device. The liquid crystal display is installed on the front panel, it displays the mains voltage, as well as errors encountered during operation.

Many owners praise the device not only for the power and accuracy, worthy of the rating winner, but also for the ease of use. The model is reliable and durable.

Advantages

• high power;
• LCD – display;
• precise stabilization;
• ease of use.

disadvantages

• noisy work.

Wester STB-10000

Rating: 4.8

For excellent performance and low noise level, the Wester STB-10000 stabilizer is ranked second. It was user reviews that allowed this model to bypass more powerful and sophisticated competitors. The device is inferior to the leader in active power (8 kW) and stabilization accuracy (8%). But the device compares favorably with its compact size and low weight (17.6 kg). The power reserve is enough to filter the voltage in the household network of an average home. The device handles the input voltage range from 140 to 260 V.

The advantages of the stabilizer, according to users, include an informative display, a reasonable price, and an effective cooling system. During operation, the device does not make noise and does not heat up.

Advantages

• compactness and lightness;
• effective cooling;
• informative display;
• high-quality assembly.

disadvantages

• insufficient power.

RUCELF SRWII-12000-L

Rating: 4.7

The RUCELF SRWII-12000-L stabilizer is in the third position of our rating. The model is not inferior to the winner in power (10 kW), but loses in stabilization accuracy (8%). The device is designed for wall mounting, although it weighs quite a large 22.5 kg. The manufacturer has equipped its product with such modern options as overload protection, LED display, digital temperature control. The stabilizer equalizes a wide voltage range (95-280 V), its efficiency is 98%.

Users note the reasonable price of the model, reliable protection of household electrical appliances from network failures, a display with settings. The owners are somewhat upset by the bulkiness of the device and the large weight.

Advantages

• affordable price;
• LED display;
• high power;
• digital temperature control.

disadvantages

• bulkiness;
• great weight.

The best ultra-precise stabilizers for gas boilers

Modern gas boilers are equipped with electronic control units that are demanding on the quality of electricity. Only ultra-precise stabilizers are capable of preventing the failure of electronics. Here are the best examples.

PROGRESS 8000SL

Rating: 4.9

If an accurate and fast device is required to equalize the voltage in the network, then you should pay attention to the PROGRESS 8000SL stabilizer. The model has an active power of 6.4 kW and is able to cope with filtering the input voltage from 105 to 280 V. At the same time, the stabilization accuracy reaches 0.9%. And the response time of the device is only 10 ms. The experts gave the device the first place in the rating, despite the higher price than that of competitors. The electronic stabilizer is installed on the floor and weighs 40 kg. The manufacturer has equipped the device with a forced cooling system.

Users are satisfied with the performance of the ultra-precise stabilizer. It reliably protects the electronics of gas boilers from power failures. In addition, the model is able to work for a long time without heating up.

Advantages

• high stabilization accuracy;
• sufficient power;
• quick response;
• good efficiency (96%).

disadvantages

• high price.

Lider PS10000W-50

Rating: 4.8

The thyristor stabilizer Lider PS10000W-50 can operate in a wide temperature range (-40 … + 40 ° C). The model with a rated power of 10 kW is characterized by low noise level and durability. The device does not need to be serviced, it will function properly in a single-phase power supply. The device is equipped with a non-volatile memory, which stores information about the last 32 abnormal outages. The stabilization accuracy is 4.5%, and the response time does not exceed 40 ms. In these components, the device loses to the winner of the rating. However, due to the affordable price and wide range of input voltages (110-320 V), the stabilizer takes an honorable second place.

The owners of the model have no special complaints about the operation of the unit. It does not make noise, does not heat up, reliably protects electrical appliances and gas boilers.

Advantages

• frost resistance;
• high power;
• wide range of input voltages;
• non-volatile memory.

disadvantages

• long response time.

The best electromechanical voltage stabilizers up to 10 kW

Electromechanical stabilizers attract the attention of buyers due to their combination of high control accuracy and affordable price. While these devices are not the most reliable, they are in steady demand. Two models can be cited as examples.

RUCELF SDWII-12000-L

Rating: 4.9

The RUCELF SDWII-12000-L stabilizer provides the maximum level of protection for household electrical appliances. Therefore, the scope of the model is country houses and cottages. Thanks to its high active power (10 kW), the device is able to take care of the most complex electrical devices. The input voltage range should be within 140-260 V, the stabilization accuracy will be about 1.5%. The stabilizer must be placed on the wall, the product weighs 27.5 kg. The power losses of the unit are insignificant, since the efficiency reaches 98%.

Experts gave this model the palm in the ranking for the four-level active defense. In case of malfunctions in the stabilizer, Bypass mode is activated, and power will be supplied to the devices without filtering.

Advantages

• high power;
• high efficiency;
• stabilization accuracy;
• Bypass mode.

disadvantages

• not detected.

RESANTA ACH-10000/1-EM

Rating: 4.8

The stabilizer RESANTA ACH-10000/1-EM competes on equal terms with the leader of the rating. The active power of the device reaches 10 kW, the efficiency is 97%, the stabilization accuracy is 2%. A small loss in technical parameters is compensated by a low price, which becomes an attractive moment for domestic buyers. The experts gave the second place in the rating to the stabilizer for its fast response (10 ms), the presence of the Bypass transit mode. Voltage stabilization is smooth and fast.

Users love the stylish appearance of the floorstanding unit, value for money, and low noise levels during operation. The owners experienced no installation or configuration issues.

Advantages

• quick response;
• stylish design;
• affordable price;
• easy to install and operate.

disadvantages

• over time, 50-ampere machines fail.

The best electronic voltage regulators

Electronic stabilizers are thyristor or triac. They are distinguished by high efficiency, quickly react to voltage drops. Users choose these devices for their quiet operation. Experts recommend taking a closer look at the following models.

BASTION SKAT STM-20000

Rating: 4.9

The electronic stabilizer BASTION SKAT STM-20000 has a high total (20 kW) and active (12.345 kW) power. The device is able to smooth the input voltage in the range of 125-290 V with a stabilization accuracy of 5%. The model works both at positive temperatures (up to + 40 ° C) and in frost (up to -10 ° C). Experts pay attention to the fast response of the device (10 ms), due to which the voltage drop is instantly compensated. The manufacturer has equipped its product with a round tower-type case. The circuit has 7 stages of stabilization, which ensures high accuracy.

The model takes the first line of the rating due to the large number of positive reviews. Users admire the quiet operation of the device, high reliability, lightning protection and high-quality assembly.

Advantages

• built-in lightning rod;
• original round case;
• high degree of security;
• stabilization accuracy.

disadvantages

• high price.

Energy Classic 7500

Rating: 4.8

Electronic Stabilizer Energy Classic 7500 copes with low voltage threshold (60 V) perfectly. In this parameter, it has no competitors among similar devices. The model loses to the winner of the rating in power (5.25 kW) and response time (20 ms). High stabilization accuracy (5%) is provided by a 12-stage system. Thanks to a well-thought-out design, the manufacturer managed to bring the efficiency up to 98%. The model is designed for wall mounting, its weight is 20 kg. But the stabilizer can only work in a heated room, where the temperature does not drop below + 10C.

Domestic development received a lot of positive feedback from users. Consumers are pleased with the durability of the model and the large input voltage range.

Advantages

• durable construction;
• wide range of input voltage;
• precise stabilization;
• quiet work.

disadvantages

• simple design;
• limited power.

Best Double Conversion Voltage Regulator

One of the most modern and expensive types of stabilizers are inverters. Their principle of operation is to quickly convert alternating current to direct current and vice versa. This scheme of work provides a high speed of regulation, noiselessness and compactness. The following device received good reviews.

Calm IS1500

Rating: 4.9

The stabilizer Shtil IS1500 can provide the highest level of equipment protection. The inverter model has unique properties due to double conversion technology. It can protect appliances up to 1.125 kW from problems in the electrical network. The input voltage can fluctuate in the range from 90 to 310 V, and at the output the consumer will receive almost ideal energy (216-224 V). High stabilization accuracy (2%) is highly appreciated by experts, as well as by employees of medical institutions, employees of automatic telephone exchanges, computer specialists, etc. Two devices can be connected to the stabilizer simultaneously.

Users note the light weight and compactness of the model, the presence of high-frequency interference filtering.

Advantages

• high stabilization accuracy;
• lightness and compactness;
• transformerless conversion circuit;
• wide range of input voltage.

disadvantages

• noisy work.

Best Hybrid Voltage Regulator

The hybrid stabilizer uses two types of power conversion. The electromechanical design is complemented by relay-type converters. The relay operates only when the electromechanical device is not capable of producing 220 V. Experts noted one development.

Hybrid SNVT-6000/3

Rating: 4.9

Domestic development Hybrid SNVT-6000/3 of the well-known company Energia is distinguished by the ability to connect to the power grid. Therefore, the scope of the unit is very wide, from residential buildings to industrial sites. At the same time, the model demonstrates high accuracy of the output voltage. Experts refer to the advantages of the device as the absence of electromagnetic waves during operation, which can interfere with other devices. This quality is appreciated by medical professionals as well as by experts in the field of instrumentation.

The stabilizer has perfectly proven itself in offices with computer equipment, it also copes with the operation of air conditioners. The model deservedly gets into our rating.

Advantages

• high power (6 kW);
• stabilization accuracy (3%);
• Efficiency 98%;
• three-phase input voltage.

disadvantages

• high price.

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Attention! This rating is subjective and does not constitute an advertisement and does not serve as a purchase guide. Before buying, you need to consult with a specialist.