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Automatic voltage regulators (AVRs) keep the voltage going to your appliances and equipment steady when the line voltage drops or rises. Homes, offices, shops and small factories use them to protect refrigerators, aircon units, computers, machines and audio equipment where power is unstable. This collection includes servo motor AVRs and other automatic regulators from Lotus, Chint, Powerhouse, Sassin, Omni, Ingco and Total.
How to choose an AVR
- Capacity (VA or KVA): add up the wattage of everything you will connect and choose an AVR rated well above it. Motors such as compressors and pumps draw extra current at start-up, so allow more for those.
- Servo motor type: servo models like the Lotus SM series and Chint SVC series adjust the voltage smoothly, which suits sensitive equipment.
- Supply: make sure the AVR matches your supply, single phase or three phase.
- Display: digital models from Powerhouse show voltage at a glance.
Popular AVRs at KHM Megatools
| Model | Brand | Capacity | Good for |
|---|---|---|---|
| SM500X / SM1000X | Lotus | 500VA / 1000VA | TVs, computers and small appliances |
| SM1500X / SM2000X / SM3000X | Lotus | 1500VA to 3000VA | Refrigerators, aircon and several appliances |
| TND1-SVC (0.5-3.0) | Chint | 0.5 to 3.0 KVA | Homes and offices |
| TND1-SVC (5.0-30/AF) | Chint | 5.0 to 30 KVA | Larger loads and small businesses |
| TPVS40153 | Total | 1.5KVA | Home appliances |
| VS01503 | Ingco | AC regulator | Home appliances |
| Digital AVR | Powerhouse | VA and KVA sizes | Checking voltage at a glance |
AVR or generator?
An AVR corrects voltage but does not supply power during a brownout. For backup power, see generators or inverter generators. Browse all regulators and electrical tools.
All products from KHM Megatools are genuine and covered by the manufacturer's warranty where applicable.
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