Polycab commercial on‑grid inverters
Three phase string inverters from 12 to 125 kW for factory, warehouse, school, hospital and cold-store rooftops.
For commercial and industrial (C&I) rooftops, Polycab's PSIT three phase string inverters run from 12 kW to 125 kW. Using several mid-size string inverters rather than one central inverter keeps a site generating if one unit needs service, and multiple MPPTs let you use roof sections that face different directions.
Eastern India has a lot of suitable roof space in rice mills, cold stores, warehouses, schools and hospitals, many of which pay commercial tariffs and run diesel generators. A rooftop system with net metering or self-consumption can cut those costs significantly. We supply the inverters, Polycab modules and DC cable together, so an EPC can source the main equipment from one place.
Technical data
From Polycab's datasheet. Specifications may change; check the latest datasheet before design. Message us for the models in stock today.
| Range | 12–30 kW | 40–60 kW | 75 kW | 100–125 kW |
|---|---|---|---|---|
| Ratings | 12 · 15 · 20 · 25 · 30 kW | 40 · 50 · 60 kW | 75 kW | 100 · 110 · 125 kW |
| Models | PSIT-12K/15K-SM3, 20K/25K/30K-SM4 | PSIT-40K-SM6, 50K/60K-SM8 | PSIT-75K-SM14 | PSIT-100K-SM16, 110K/125K-SM18 |
| MPPTs | 2 | 3 (40 kW), 4 (50–60 kW) | 4 | 8 (100 kW), 9 (110–125 kW) |
| Weight | 18.7 – 21.5 kg | 41.5 – 42 kg | 43.3 kg | 91.5 – 92 kg |
Common to all models
| PV input | Max. 1100 V DC, rated 620 V, wide MPPT range up to 1000 V |
| Grid | 380 / 400 / 415 V three phase |
| Enclosure | IP66, for outdoor installation |
| Larger projects | 350 kW utility string inverters also in the Polycab range |
| Warranty | 7 years |
Common questions
Can you supply inverters, panels and cable for a whole C&I project?
Yes. We supply Polycab string inverters, DCR and non-DCR modules and EN 50618 solar DC cable. Send us the project size and site location for a combined quote.
How quickly can stock reach a site in Jharkhand or West Bengal?
We dispatch from our Patna and Kolkata warehouses. Message us with the site location and we'll confirm stock and delivery time.
Are larger inverters available?
Yes. Polycab also makes 350 kW utility string inverters. Ask us for availability.
Also useful
Your local Polycab stockist
- Ready stock in Patna and Kolkata. Pick up or order locally instead of waiting on long-distance shipments.
- One supplier for the whole system. Inverters, batteries, modules and DC cable from one brand.
- Datasheets on hand. Every product above links to Polycab's official specs.
- A local team. Call or WhatsApp us for pricing, availability and support.
Get today's price and stock
Tell us the product, rating and quantity you need. We'll confirm stock and price, and arrange pickup or delivery.
GSTIN 10AFZFS4184F1ZN
GSTIN 19AFZFS4184F1Z5