Ashley Edison Global
Automatic Voltage Regulator Manufacturers | single & 3 Phase VOLTAGE regulator

Under Voltage Brown Out-Voltage Spikes-Power Sags Volrage

Your absolute Voltage Advantage

Eliminate Voltage Drop & Fluctuations

While Massively Reducing Project Costs

Whether you’re proposing an electrical design to a client, or looking for proven ways to solve incoming voltage anomalies, Ashley Edison’s Voltage Regulating Technology helps you stay ahead of voltage problems—with unstoppable confidence.

The Ever-Present Threat of Voltage Fluctuation

Voltage fluctuations pose a significant risk to your electrical and electronic equipment—one that may result in costly operational disruptions and substantial financial losses.


Budget-Killing Cable Costs

Spending millions on cable costs to fulfil voltage drop requirements can oftentimes put a huge dent in your project budget – making it challenging to offer a more competitive design to your clients.


Disastrous Unplanned Downtime

Dreadful equipment malfunctions and unnecessary maintenance works frequently compromise the safety, operational efficiency, and ultimately, the profitability of your business.


Hidden Risks Of Catastrophic Failures

High-value and sensitive electronics are vulnerable to unforeseen failures when left defenceless against harmful voltage fluctuations, leaving room for potential emergency breakdowns and serious consequences.

Optimise. Stabilise. Maximise.

Experience unprecedented performance and peace of mind with our range of trusted, time-tested Automatic Voltage Stabilisers.

Engineer Greater Returns On Your Investments

Propose your winning electrical design that achieves up to ±0.5% constant voltage compensation and stability (from no load to full load), completely removing the need for excessive cables.

Driving Reliability, Reinforcing Predictability.

Gain full control over your facility with total power protection, giving you the certainty and greater peace of mind to focus on crucial operational improvements.

Future-Proof Your Facilities From Voltage Anomalies

Unlock unstoppable and lasting dependability in your electrical system, so you can be confident in the long term success of your operational performance for the future.

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Ashley-Edison’s wide range of single and 3 phase automatic voltage stabilizers enables you to focus on safeguarding your high value equipment and mission critical loads from harmful voltage fluctuations, seamlessly. This empowers you to maximise production and output while eliminating unplanned downtime and expensive emergency repairs.

Voltage Protection


Find the perfect fit with a wide range of power ratings up to 3,000 KVA.

Wide Voltage Input

Wide Input Voltage Tolerance

From 228V up to 581V (3Phase) input voltage swing.



Up to ±0.5% constant output voltage accuracy.

Independant Phase Control


Individual phase voltages regulated to remain stable - regardless of load unbalance.

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Trusted by

1 kva to 1,500 kva

Ideal For 95% of

All Applications


Servo Motor - High accuracy output voltage of ± 0.5% that protects against the uncertainties of voltage fluctuations on the input utility supply.


Optimise your OPEX with a practical voltage solution that is on point and on budget.


Field-tested with more than 98% efficiency for lower operational costs.

200 kva to 3,500 kva

Heavy Duty

Industrial Powerhouse


Rotor Stator - A virtually maintenance-free, plug-and-forget solution that offers absolute reliability - saving you precious time, money and resources on frequent servicing or repairs.


For maximum enhancement of Automatic Voltage Stabiliser's system cooling performance and efficiencies.


Designed to withstand harsh environments, while safeguarding your load against the uncertainties of voltage anomalies. Because you cannot break what's been built to last.

Demand Certainty, With Voltage Stability

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AVR | Up to 500KVA, 12 units

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AVR | 3 Phase 50kva 14 units
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United Kingdom


AVR | 75kva & 60kva

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AVR | 55kva, 24 units

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Papua New Guinea


AVR | Multiple 120kva

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Saudi Arabia


AVR | Up to 1000kva

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AVR | Up to 2000kva 8 units

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South-East Asia


AVRs up to 150 kVA | Variable Transformers up to 160 Amp

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AVR | Up to 1000kva

Need more technical information or someone to consult?

Speak to us.

We’re happy to help!


Equipment failures can be frustratingly painful to deal with. Severe voltage drops and heavy voltage fluctuations from the mains – are some of the culprits crippling your uptime.


The fastest and most cost-efficient method (also adopted by Grid Operators and MNCs) is to incorporate a dependable voltage regulating solution into your electrical system.


This facility-saving quick fix eliminates all forms of harmful voltage irregularities, drops and fluctuations – regardless of load change in your electrical system.


An optimally stabilised output voltage supply provides robust protection for your high value equipment.


What you’re looking for is an answer that guarantees improved operational efficiency, reliability, prolonged healthy lifespan and ultimately, a solution that safeguards your precious uptime – permanently.


Need help picking the perfect voltage regulating solution? Speak to us today! Our consultants are happy to assist you with your challenges – every step of the way.


Speak To Our Consultants >>



If you’re wondering how simple voltage regulation can overcome huge voltage anomalies, you’re not alone. There is a sea of information online explaining how voltage stabilisers work. However, not many are comprehensive enough to explain the in’s and out’s of what exactly goes on within these innovative works of wonders.

For servo electronic design voltage stabilisers: Any form of erratic or unstable input voltage is immediately detected by microprocessors in the voltage stabiliser. This triggers the servo motor driver to instantly activate and move the servo motor’s shaft across the windings of a variable transformer – AUTOMATICALLY adjusting the output voltage value to your desired prescribed limit. The regulated voltage is then supplied through the secondary of the Buck-Boost Transformer, and then fed to the machinery or appliances in use.

For the full in-depth literature with quantitative and qualitative research explaining all the how’s and why’s, download our free 22-page PDF white paper to learn more.

Download Complimentary White Paper >>

When it comes to mission-critical applications and high-value equipment, an uninterruptible power supply (UPS) is used for backup power when your regular power source fails.


If you’re anything like us, you’d believe that leaving things to chance is not practised in the electrical engineering community.


Which is why we too, believe in redundancy systems.


Supplying voltage stabilisers to mission-critical applications like datacenter and IT system infrastructures has become a crucial part of uptime protection in the industry.


Should the UPS require any form of shut down or scheduled maintenance, you can be assured that your voltage stabiliser continues to deliver clean, stable voltage supplies to your load, all day, every day.


View Products >>


There are 4 different types of voltage stabiliser designed for commercial and industrial applications: Servo Electronic, Magnetic Induction, Static Tap Switching, Solid State (Ferroresonant).

Each design has its pro’s and con’s. While Servo Electronic based Voltage Stabilisers have mainly dominated the market, the ever growing demand for uncompromising reliability and maximum durability in voltage protection has caused an unsurprising shift towards the Magnetic Induction design.

Static tap switching design (thyristor based) is favoured by non critical projects that are desperately constrained by budgets. When technical specifications are written under non stringent requirements (e.g. voltage output of ±10%), cheaper prices may be preferred over quality.

Solid State Design (ferroresonant) is highly dependable. With no moving parts, the ferroresonant voltage stabiliser is not subject to mechanical wear and tear. Due to its nature, it is typically suitable for single phase applications.

To learn more on which design is ideal for your application, read our comprehensive blog article (11min read) to find out more.

Otherwise, drop us an email at [email protected] and our consultants will be in touch with you within 24hrs.

Speak to our Consultants >>

For Servo Electronic Voltage Stabilisers, maintenance is absolutely minimal. Quarterly checks on metering displays and yearly ocular (visual) inspections are strongly encouraged. Any electrically trained technician is more than capable of carrying out these simple maintenance tasks – with ease.

For a virtually maintenance-free solution, explore our Extra Robust Magnetic Induction design that’s engineered for maximum uptime protection.

Discover Maintenance-Free Series >>

Ashley Edison Automatic Voltage Stabilisers are designed as “Plug-And-Forget” voltage protection solutions.


Once commissioned, the incoming voltage is INSTANTLY regulated to your desired set output voltage values within 1.5ms.


Voltage levels are automatically and constantly maintained during the day when loading is high, and throughout the night when loading is low – giving you a peace of mind and unstoppable confidence that your equipment are well taken care of, with no guesswork needed.



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At Ashley Edison Global, we believe in engineering solutions that are built to last. By championing the need to optimise rather than replace, we safeguard the maintenance budgets of our clients by preventing unnecessary expenditure on replacements or repairs. No detail is too small when product design quality is concerned.


In our manufacturing process, every product is closely inspected as they pass through assembly lines with an intense focus on durability and maintainability—while paying close attention to safety as a top priority.


With over 40 years of research and development, Ashley Edison products have been put through the test of time, enabling us to break boundaries by greatly improving MTBF and total dependability. This results in the perfect marriage of performance and reliability.


Read Our Design Philosophy >>


We design intuitive products with simplicity and ease-of-use in mind, eliminating the chore of complex disassembly and reassembly—especially in circumstances that merely require the replacing of minor components.


By making regular inspections a straightforward and simple process, we ensure that our products run smoothly throughout their expected healthy lifespan, with absolute certainty and maintainability.


Every Ashley Edison Automatic Voltage Stabiliser comes inclusive of a 3-Year full warranty on all parts.



Voltage Fluctuation White Paper

Download your 22-Page White Paper on Stabilising Voltage Fluctuation

This comprehensive study explores quantitative and qualitative research on how harmful voltage anomalies impact organisations — both operationally and financially.


This guide includes an in-depth cause and effect analysis of how electrical systems and high-value equipment react to inherent voltage fluctuations.


A conclusive summary reveals the solutions of how you can confidently eliminate this threat forever.

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20-Years Anniversary Of Excellence In The Military Industry

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Voltage Fluctuation White Paper


Three Phase

SESL-H-3P-S Model
Large Capacity Rating
200 to 2,000 KVA


Enclosure 335
1000W x 1300H x 580D (mm)
250~300 KVA ± 15%
120~200 KVA ± 20%


Enclosure 336
1280W x 1480H x 660D (mm)
400 KVA ± 15%
250 KVA ± 20%


Enclosure 337H
1880W x 1950H x 880D (mm)
500 KVA ± 15%
300 KVA ± 20%


Enclosure 339
1470W x 1950H x 1340D (mm)
600 ~ 1,500 KVA ± 15%
400 ~ 1,000 KVA ± 20%
300 ~ 750 KVA ± 25%
300 ~ 600 KVA ± 30%

Three Phase

SES-H-3P-S Model
Added I/P Breaker Protection
60 to 1,000 KVA


Enclosure 333
490W x 800H x 990D (mm)
≤ 100 KVA ± 15%


Enclosure 334
540W x 900H x 1000D (mm)
120 – 150 KVA ± 15%


Enclosure 335
1000W x 1300H x 580D (mm)
180 – 300 KVA ± 15%
120 – 200 KVA ± 20%
120 – 150 KVA ± 25%


Enclosure 336H
1880W x 1480H x 660D (mm)
400 KVA ± 15%
250 KVA ± 20%
180 ~ 200 KVA ± 25%


Enclosure 337H
1880W x 1950H x 880D (mm)
500 KVA ± 15%
300 KVA ± 20%
250 KVA ± 25%


Enclosure 339H
2170W x 1950H x 1340D (mm)
600~1,000 KVA ± 15%
400~600 KVA ± 20%
300~400 KVA ± 25%

Single Phase

SES-H-S Model
Added I/P Breaker Protection
1 to 100 KVA

Enclosure 102
270W x 460H x 490D (mm)
≤ 20 KVA ± 30%
≤ 15 KVA ± 20%
≤ 10 KVA ± 25%
≤ 10 KVA ± 15%

Enclosure 103
400W x 580H x 500D (mm)
25 KVA ± 15%
20 KVA ± 20%
15 KVA ± 25%

Enclosure 332
380W x 670H x 780D (mm)
30 KVA ± 15%

Enclosure 333
490W x 800H x 990D (mm)
40 ~ 50 KVA ± 15%
25 ~ 30 KVA ± 20%
20 ~ 25 KVA ± 25%
15 ~ 20 KVA ± 30%

Enclosure 334
540W x 900H x 1000D (mm)
60 ~ 75 KVA ± 15%
40 ~60 KVA ± 20%
30 ~ 50 KVA ± 25%
25 ~ 40 KVA ± 30%

Stay Safe With Greater Protection

As safety is our utmost priority, Ashley Edison prepares for every scenario possible
—taking the puzzle out of your protection.

Designed And Engineered With Safety In Mind

We leave nothing to chance when it comes to larger capacity units (≥400KVA). By installing high-quality protective acrylic shields in front of live parts, we ensure the safety of your personnel at all times. For enhanced protection during installation, all distances between uninsulated metal parts, busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

Outfitted with fireproof cable trunking, this protective solution safeguards against long fire exposure even in hazardous areas and explosive atmospheres—providing maximum safety for mission critical applications.

Fuss-Free Installation. Seamless Operations.

To ensure ease of installation, Ashley Edison addresses the concerns of contractors and installers by keeping it simple.



We keep the installation process simple and streamlined by allowing sufficient working space for installers. Taking the nut and bolt intrusions into consideration, we ensure that the distance between the uninsulated metal parts, the busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.


Even in units with larger capacities, all busbar terminals are clearly marked out, and well positioned in line for easy identification of individual input and output terminations. Installation of these terminations are similar to those practised in high voltage transformers.

Easy Maintenance

Annual Ocular Maintenance
Visual Inspection 230

Conduct Visual Inspection On Voltmeter:

Ensure reading is set to your desired set output voltage value (e.g. 230V).

LED Status

Ensure LED Status Indicators are at “Normal”.

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Visual Observation Of Variable Transformer Surface:

Use airbrush for dusty environments if necessary.

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Visual observation if carbon brush is not worn out.

Moving Motor

Conduct visual inspection to check variable transformers are all regulating (moving).


Accuracy. Beyond Imagination.

The digitally enhanced Ashley Edison MBB Card ensures pinpoint voltage stabilisation against the most erratic anomalies, allowing you to protect precious uptime, effortlessly. Harnessing ultra precision capabilities to produce some of the tightest output voltage tolerance available in the industry, the Ashley Edison MBB Card delivers ±0.5% voltage accuracy, enabling your load equipment to enjoy optimal voltage supplies, regardless of load change in your electrical system.

Expert Digital Control

Utilising the advantageous measurements of true RMS, the Ashley Edison MBB Card’s reads both perfect, sinusoidal waves, as well as complex, distorted non sinusoidal waves—up to 0.1V accuracy. Coupled with lightning fast response time of 1.5ms, this expert digital control feature equips your load with total voltage protection that is precise, continuous and ultra responsive.

AE Digital Control Display_230v

Universal Presettable Function

The Universal Presettable Function onboard the Ashley Edison MBB Card allows seamless control of your desired output voltage value on all 3 Phases—with just a touch of a button. This multifunctional feature enables each AVR to fully operate with just 1 card, instead of separate cards for each individual phase. Fitted LED Output Voltmeter Display and Alert Indicator better facilitates easy status monitoring while performing maintenance on your AVR.


Microcontroller Unit (MCU)

MicroController Unit (MCU) helps you to deliver high speed and reliable efficiency in the AVR’s operations with less heat generation and reduced power consumption. Used in Supercomputers, Surface Mount Technology (SMT) allows components in the Ashley Edison MBB Card to be aligned closer together, creating a more compact and lightweight end product. Additional safety wire-to-board feature establishes fail-proof connectivity between circuits—so you can work safely on your AVR.