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One Stabilizer at the Meter, Every Socket Protected
A Servolink mainline stabilizer is installed once, right after the electricity meter, and protects every appliance in the home or shop from voltage ups and downs.
Instead of buying a separate stabilizer for the fridge, the TV, the washing machine and each AC, a mainline stabilizer corrects the voltage for the whole house at one point. It is a relay type (step tapping) stabilizer built for a wide input range, so it keeps lights, fans, pumps and appliances running even when the supply in the colony drops low in the evening.
SERVOLINK mainline stabilizers are made in 3, 5, 7.5 and 10 kVA, for single phase homes, flats, shops and small offices.
A typical home today has far more electronics than the one or two appliances people usually protect. Besides the AC and fridge, there are LED lights and drivers, BLDC fans, a washing machine with a control card, a water pump, a geyser, a microwave, TVs, a Wi-Fi router and an inverter charging its battery. Every one of these has electronics that age faster on bad voltage.
Buying a separate stabilizer for each appliance is costly, takes space at every socket, and still leaves most of the house unprotected — lights, fans, pumps and the inverter almost never get one. And the voltage problem in a colony is the same for the whole house: when it drops in the evening, it drops for every socket at once.
Correcting the voltage once, at the meter, protects everything after it.
Add the wattage of everything that runs together — ACs, fridge, pump, geyser, lights and fans. Divide by 1000 to get kW, and divide by 0.8 to get kVA. Then choose a rating so that this load stays around 60–70% of the stabilizer rating.
Our kVA calculator adds up the appliances for you and suggests the right rating.
| Point | Mainline Stabilizer | Single Phase Servo Stabilizer |
|---|---|---|
| Correction | In steps, through relays | Smooth, through motor-driven variac |
| Output accuracy | Safe band around 230 V | 230 V ±1% |
| Ratings | 3, 5, 7.5 and 10 kVA | 3 – 50 kVA |
| Price | Lower | Higher |
| Best for | Homes and shops on a budget | Homes with many ACs, clinics, offices, sensitive equipment |
If your house runs 3 or more ACs, a lift, or medical and lab equipment, choose a single phase servo stabilizer.
| Brand | SERVOLINK |
| Product Type | Mainline stabilizer, relay type (step tapping) |
| Capacity | 3, 5, 7.5 and 10 kVA |
| Supply | Single phase, phase + neutral |
| Input Working Range | 90–300 V, 130–300 V, 140–300 V or customized on request |
| Output Voltage | 200–240 V |
| Frequency | 50 Hz |
| Protection | High / low voltage cut-off, time delay |
| Display | Digital, input and output voltage |
| Transformer | Copper wound, made in-house |
| Mounting | Wall mounted / floor standing |
| Installation | Indoor, after the energy meter |
After the electricity meter and the main switch, before the distribution board (MCB box). Get it installed by a qualified electrician.
No. The mainline stabilizer already protects every AC in the house, as long as it is sized for the total load.
That is the relay changing taps when the voltage changes. It is normal.
The stabilizer cuts off the house to protect the appliances, and switches back on after the time delay once the voltage returns.
ISO 9001:20152024–2027
NSIC Registration2025–2027
MSME / UdyamRegistered 2021
Importer–Exporter CodeIssued 2019
Industrial Registration2010 record
CE — Certificate of Compliance2015–2016 record
NSIC–ONICRA Rating2016–2017 rating
ISO 9001:20152021–2024
ISO 9001:20152018–2021
ISO 9001:20082015–2018
ISO 9001:20082011–2014
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