
Same stabilizer either way — choose the cover that fits how you'll use it.
And even if your warranty has expired — in any case — we will still repair your stabilizer, charging only the part and labour cost.
Toroidal-core stabilization. Genuine MuscleGrid, sold direct: GST invoice, a real warranty honoured at our own service centre, and support on WhatsApp or call — not a marketplace listing.
Indian mains do not fail politely. They sag at 7 p.m. when every AC in the street starts, and they spike at midnight when the load drops away. This 5 kVA (4,000 W) unit sits at the appliance it protects and holds the output steady across an input as low as 50V and as high as 280V, so the equipment behind it never sees the swing. It is sized for a 1.5 to 2-ton AC, or the essential circuits of a flat — fridge, TV, washing machine and lighting together.
| Brand | MuscleGrid |
| Capacity | 5 kVA (4,000 W) |
| Input range | 50–280V |
| Coil type | Toroidal transformer |
| Display | Digital — live input and output voltage |
| Time delay | 5 seconds on restore (compressor protection) |
| Switching | Heavy-duty relay |
| Protections | Over-voltage · under-voltage · overload · thermal cut-out |
| Idle consumption | Minimal standby draw — designed to stay powered 24×7 |
| Use | Appliance and mainline protection |
| Warranty | Standard: 3-year full hardware warranty (+3 months free on registration at newcrm.musclegrid.in) · Extended 5-year for +10% · Research & DIY option: 6-month hardware warranty + phone support at 10% lower price — choose below |
Air-conditioners and refrigerators, where a compressor is the expensive part; televisions, computers and routers, where the power supply is; and water pumps and motors, which burn out quietly on low voltage long before anyone notices. Fitting one stabilizer at the mainline is cheaper than replacing one compressor.
MuscleGrid builds power equipment for Indian conditions and sells it without a middleman: GST invoice for business input credit, warranty honoured at our own service centre rather than a courier lottery, free shipping pan-India, and sizing help on call before you buy. And even after the warranty ends, we still repair your stabilizer — you pay only parts and labour.
Free help from the official manuals and our service desk — no login needed.
🛠 Stabilizer troubleshooting🛠 All troubleshooting guidesAbout 4,000 W, using the standard convention of kVA × 800. In practice that covers about one 1.5-ton air conditioner.
It corrects from 50V to 280V and holds a usable output across that window. Below 50V it cuts out to protect the load rather than pass an unsafe voltage through. Buy for the worst voltage your area actually sees, not the average — if your supply falls below 50V in summer, ask us for a wider-range model.
This is a relay stabilizer. It switches between fixed transformer taps, so correction is instant and the output lands inside a safe band rather than on an exact figure — which is exactly right for fridges, televisions, washing machines and air conditioners. Servo units, which hold a sharp 230V ±1%, are for industrial and precision loads.
Yes. The output is held off for a few minutes after supply returns, so the compressor never restarts before refrigerant pressure has equalised — restarting into unequalised pressure is what kills compressors.
Three years, covering manufacturing defects and internal component failure, with service from our own centres in Delhi and Meerut.
Yes, a GST invoice is issued on every order and the price shown already includes GST.
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