170V – 270VStandard
City Supply
For settled urban connections where voltage stays close to normal and dips are brief. Available in both L and D variants.
1.5 Ton ACNTC 400 L / 400 D
2 Ton ACNTC 500 L / 500 D
22+ Years of Manufacturing
ISO 9001:2015
Direct From Factory
Your AC survives the voltage. Every time.
Navkar builds micro-controlled voltage stabilizers that hold a steady output even when your supply swings from 90V to 300V — so your compressor, PCB and fridge never take the hit.
Made in our own Jaipur plant
In-house R&D and testing lab
Lower no-load current than the ISI norm
NTC Series · Live Regulation
RUNNING
Mains Input
238V
Unstable supply
Stabilized Output
220V
Safe for your appliance
Input
Output
TARGET 220V ±1%
Wall-mounted · Digital display · Metal cabinet
The cost of skipping one
A stabilizer costs far less than the repair.
Indian supply voltage rarely sits at a clean 220V. Every swing outside your appliance's safe band shortens its life — and the damage is usually not covered by warranty.
Compressor burnout
Low voltage makes an AC compressor draw excess current and overheat. It is the single most expensive part of the unit.
Control PCB failure
High-voltage spikes kill the electronic control board in ACs, fridges and washing machines without warning.
Poor cooling, higher bills
An AC fed under-voltage runs longer to reach the same temperature — you pay for electricity you never benefit from.
Warranty refused
Damage traced to voltage fluctuation is commonly excluded from manufacturer warranty. The repair bill is yours.
Two questions
Find the exact stabilizer for your home
The right model depends on your appliance size and how bad your local supply gets. Answer both and we will point you to it.
Your recommendation
Answer both questions above
We will match you to the right input voltage range — the spec that actually decides whether a stabilizer can cope with your supply.
The NTC Series
One range. Six levels of protection.
Every Navkar stabilizer is micro-controlled and built for air conditioners. What separates them is the input voltage working range — how far your mains can fall or rise before the unit gives up.
150V – 270VStandard+
Evening Dip
Holds output steady through the peak-hour sag that most city colonies see between 7 pm and 11 pm.
1.5 Ton ACNTC 400 D
2 Ton ACNTC 500 D
130V – 270VWide
Semi-Urban
Built for outer colonies and small towns where the supply regularly falls well below normal for hours at a time.
1.5 Ton ACNTC 400 D
2 Ton ACNTC 500 D
120V – 300VWide+
Two-Way Swing
Protects against both directions — deep low-voltage spells and the high-voltage surges that follow a restored supply.
1.5 Ton ACNTC 400 D
2 Ton ACNTC 500 D
100V – 300VHeavy Duty
Rural Duty
For farm connections and areas at the end of a long feeder line, where 150V afternoons are normal.
1.5 Ton ACNTC 400 D
2 Ton ACNTC 500 D
90V – 300VWidest
Extreme Range
Our widest working band. If your AC refuses to start on other stabilizers, this is the one that will hold it.
1.5 Ton ACNTC 400 D
2 Ton ACNTC 500 D
Full range at a glance
Compare all 14 models
| Working range | Best for | 1.5 Ton AC | 2 Ton AC | Protection level |
|---|---|---|---|---|
| 170V – 270V | Steady city supply | NTC 400 L · NTC 400 D | NTC 500 L · NTC 500 D | Standard |
| 150V – 270V | Evening peak-hour dips | NTC 400 D | NTC 500 D | Standard+ |
| 130V – 270V | Semi-urban, frequent low voltage | NTC 400 D | NTC 500 D | Wide |
| 120V – 300V | Low dips plus high surges | NTC 400 D | NTC 500 D | Wide+ |
| 100V – 300V | Rural and long feeder lines | NTC 400 D | NTC 500 D | Heavy duty |
| 90V – 300V | Severe, sustained low voltage | NTC 400 D | NTC 500 D | Widest |
All models are micro-controlled, wall-mounted, and carry the same protection features listed below.
Built in, not optional
Nine things every Navkar unit does
These are not upgrades on a premium model. Every stabilizer in the NTC range ships with all of them.
Cuts off before damage
Built-in high and low voltage cut-off disconnects your appliance the moment the supply leaves the safe band — then reconnects when it returns.
5–10 second restart delay
After a power cut the unit waits before switching your AC back on. That pause is what stops a compressor restarting against pressure and burning out.
You can see it working
The digital display shows live input and output voltage side by side, and warns you the moment a surge or drop is detected. No guessing.
German-technology toroidal core
An auto-wound toroidal transformer runs cooler and wastes less. Navkar rates its self-consumption below the ISI norm — the unit itself draws less than a light bulb.
High-tensile metal cabinet
A pressed metal body, not plastic. It takes heat, handling and years of wall mounting without warping or cracking.
Mounts on the wall
Slim enough to sit beside the AC point instead of taking up floor space — and out of reach of water, dust and children.
Handles the start-up surge
Wide inrush current capacity means the unit copes with the heavy draw of a compressor kicking in, even when the incoming supply is already poor.
Multi-pin output socket
Plug straight in. No extension board, no adapter, no extra joint in the circuit for something to go wrong.
Not only for the AC
The same protection suits a washing machine, oven, treadmill, heater, iron and other household appliances you would rather not replace.
22+
Years manufacturing stabilizers
2003
Established in Jaipur
14
Models across the NTC range
ISO
9001:2015 certified unit
Why Navkar
You are buying from the people who build it.
No trading house in between. Navkar designs, manufactures and tests every unit in its own Jaipur facility.
1
Our own plant, not outsourced
Production, design, quality control and warehousing all sit under one roof, with modern plant machinery throughout.
2
An R&D lab with calibrated equipment
Products are developed and tested against national and international standards on our own instruments — not signed off on paper.
3
Checked at every stage
Quality control runs from raw material intake through to final testing, under ISO 9001:2015 discipline.
4
Straight answers before you buy
Tell us your appliance and your voltage problem and we will tell you which model fits — including when a cheaper one is enough.
Our efforts, your comfort. We have spent two decades making sure a Navkar stabilizer is the part of the installation nobody has to think about again.
Mr. Alok Kumar Jain
Managing Director, Navkar Electronics
Founded
2003, Jaipur
Certification
ISO 9001:2015
In their words
Customers who kept coming back
★★★★★
"We have been sourcing stabilizers from Navkar Electronics for our business and the performance has been outstanding. Timely delivery, durable products and responsive customer support make them a trusted partner."
MR
Mrgakshi RathoreBusiness customer
★★★★★
"Navkar Electronics offers high-quality stabilizers with excellent voltage protection. Their customer service team is prompt and always ready to help. Definitely recommended."
NA
Naman AgarwalVerified buyer
★★★★★
"Very professional approach and dependable products. The stabilizers work perfectly for our AC and refrigeration units. After-sales support is also quick and efficient."
LG
Lalit GujarAC & refrigeration
★★★★★
"Excellent product quality and very reliable stabilizers. The team guided us in choosing the right stabilizer for our requirements. Highly satisfied with their service."
PJ
Pushpansh JonwalVerified buyer
Dealers & bulk buyers
Stock Navkar in your shop.
We supply dealers, electricians, builders and institutional buyers direct from the factory. Ask for the trade price list and current availability across the NTC range.
Before you buy
Questions we get every day
Which stabilizer do I need for a 1.5 ton AC?
You need an NTC 400 model. Which one depends on your supply: if voltage stays near normal, the 170V–270V version is enough; if it drops badly, step up to 130V–270V, 100V–300V or 90V–300V. Use the finder above, or send us your usual voltage reading and we will confirm.
What does "170V–270V" actually mean?
It is the input working range — how far your mains can wander while the stabilizer still delivers a safe, steady output. Outside that band it protects your appliance by cutting off instead. A wider range means the unit keeps working in worse conditions.
Should I just buy the widest 90V–300V model to be safe?
Only if you need it. A wider range costs more and is built for genuinely bad supply. If your voltage rarely falls below 170V, the standard model protects you just as well day to day. We would rather sell you the right one than the biggest one.
What is the difference between the L and D variants?
Both are micro-controlled stabilizers with the same protection features and the same 170V–270V working range. They differ in cabinet and display configuration. [CLIENT TO CONFIRM: exact difference between the L and D variants so this can be stated precisely.]
Do I need a stabilizer for an inverter AC?
Many inverter ACs claim built-in voltage handling, but that protection is usually narrower than the swings seen on Indian supply, and compressor damage from voltage is typically outside warranty. If your area sees deep dips or surges, a stabilizer is still worth fitting. Tell us your AC model and we will advise honestly.
How much does a Navkar stabilizer cost?
Price depends on the model and the working range you need, and we quote differently for households and for dealers buying in quantity. [CLIENT TO CONFIRM: publish price bands or a starting price — buyers searching "stabilizer price" leave when a site shows none.] Send an enquiry and you will get a firm figure the same working day.
What warranty do you give?
[CLIENT TO CONFIRM: warranty period in years, what it covers, and whether service is on-site or carry-in. This is one of the top three things buyers compare, and the site currently does not state it anywhere.]
Who installs it?
A Navkar stabilizer is wall-mounted and plugs into your existing AC point through its multi-pin output socket, so any qualified electrician can fit it in minutes. [CLIENT TO CONFIRM: whether installation support is offered in Jaipur and nearby areas.]
Do you deliver outside Jaipur?
[CLIENT TO CONFIRM: which states or cities you ship to, typical delivery time, and whether freight is charged. Buyers outside Rajasthan will not enquire unless this is answered.]
Can I buy just one, or is there a minimum order?
[CLIENT TO CONFIRM: whether single units are sold direct to households, or whether retail buyers are routed to a local dealer. Say this plainly — an unanswered "can I buy one?" is a lost sale.]
What is the difference between a servo stabilizer and this one?
A servo stabilizer uses a motor-driven variable transformer and is normally chosen for industrial loads and tight output accuracy. The NTC range is micro-controlled — solid-state switching, faster response, no moving parts to wear out — which suits household and light commercial appliances like ACs. Navkar manufactures both.
Is a wall-mounted stabilizer safe with children around?
That is one of the reasons it is wall-mounted. Fixed above floor level, the unit and its connections stay out of reach and away from water and dust, inside a high-tensile metal cabinet rather than a plastic shell.
Talk to the factory
Tell us your voltage problem
Send the form or message us on WhatsApp. You will get a model recommendation and a price, not a sales script.
Call us
+91 91167 65462
Mon–Sat, working hours
WhatsApp
Message us
Fastest way to get a model suggestion
Email
navkarstabilizers@gmail.com
For quotes and documentation
Factory
Jaipur, Rajasthan
[CLIENT TO CONFIRM: full street address for Google Maps and local SEO]