Polycab three phase hybrid inverter
5 to 20 kW hybrid inverters with 48 V battery input, for larger homes, shops, clinics and offices on a three phase supply.
The Polycab PHIT-ETLV series brings hybrid solar to three phase connections. It works with low-voltage 48 V batteries, so you can start with a single Polycab 5 kWh battery and add more as the load grows, rather than buying an expensive high-voltage battery stack up front.
The unbalanced output of up to 150% matters in practice: in most Indian homes and shops the load is not shared equally across the three phases, and this inverter can deliver more on the busiest phase. The 15 and 20 kW models have two independent battery inputs for larger battery banks.
Technical data
From Polycab's datasheet. Specifications may change; check the latest datasheet before design. Message us for the models in stock today.
| Model | PHIT-5K-ETLV | PHIT-8K-ETLV | PHIT-10K-ETLV | PHIT-15K-ETLV | PHIT-20K-ETLV |
|---|---|---|---|---|---|
| Rated power | 5 kW | 8 kW | 10 kW | 15 kW | 20 kW |
| Max. PV input power | 10 kW | 16 kW | 20 kW | 30 kW | 40 kW |
| Battery inputs | 1 | 1 | 1 | 2 | 2 |
| Max. battery charge / discharge current | 125 A | 175 A | 220 A | 165 + 165 A | 208 + 208 A |
| Backup output | 5.5 kVA | 8.8 kVA | 11 kVA | 16.5 kVA | 22 kVA |
| Backup peak, 10 s | 10 kVA | 16 kVA | 20 kVA | 30 kVA | 40 kVA |
| Max. efficiency | 97.8% | 97.8% | 97.8% | 97.9% | 97.8% |
Common to all models
| Battery | 48 V nominal (40–60 V), LFP or lead-acid |
| PV input | Max. 1000 V, MPPT range 150–850 V, 20 A per MPPT, 2 to 4 MPPTs by model |
| Grid / output | 400 / 380 V three phase, unbalanced output up to 150% |
| Backup switchover | Under 4 ms |
| Generator port | Yes, 20 kVA |
| Protection | Type II surge protection on DC and AC sides, AFCI optional |
| Enclosure | IP66, C4 anti-corrosion, smart fan cooling |
| Monitoring | LCD, Wi-Fi, LAN, Bluetooth, 4G, RS485, CAN |
| Size / weight | 756 × 551 × 258 mm, 42–51 kg |
| Warranty | 8 years with a Polycab battery, 5 years with another battery |
Common questions
Does it need a high-voltage battery?
No. It is designed for 48 V low-voltage batteries (LFP or lead-acid), such as the Polycab 5 kWh LFP battery, which can be paralleled up to 30 units.
What happens if my loads are unbalanced across phases?
The inverter supports unbalanced output up to 150%, so it can supply more power on one phase than the others, which suits typical Indian three phase wiring.
Can a diesel generator be connected?
Yes. There is a dedicated generator input rated 20 kVA, so the system can coordinate solar, battery, grid and generator.
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.
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GSTIN 10AFZFS4184F1ZN
GSTIN 19AFZFS4184F1Z5