4 kW Single Phase

Yes, all Zenergize solar inverters carry BIS IS 16221 certification, the mandatory Indian standard for grid-connected solar inverters.

Yes, BIS IS 16221 certified inverters qualify for the PM Surya Ghar subsidy Yojana scheme.

SiC MOSFETs operate efficiently at higher temperatures, making them ideal for India's climate - delivering 98%+ efficiency even at 50°C ambient.

Zenergize offers a 10-year warranty backed by a PAN-India service network across 40+ cities.

Model: GSTI-4K0-1P

Ideal for larger residential rooftops requiring higher generation with a single-phase connection.

Solar Inverter · 4 kW · Single Phase

Specifications

Technical Specifications - GSTI-4K0-1P

PV String Input	Maximum PV Power (STC)	5.3 kWp
	Operating Voltage Range	50 – 420 V
	MPPT Voltage (Full Load)	200 – 420 V
	Nominal DC Input Voltage	280 V
	PV Short Circuit Current	22 A
	Max Continuous Input Current	20 A
	Number of MPPT Trackers	1
AC Output	Nominal Output Voltage	240 Vac (192 – 264 V)
	Output Voltage Trip Time	2.0 s
	Nominal Frequency	50 Hz (47.5 – 50.5 Hz)
	Frequency Trip Time	0.2 s
Efficiency	Maximum Efficiency	98%
Efficiency	Conversion Efficiency	98%
General	IP Protection	IP 65
	Cooling	Natural Air Cooling
	Operating Altitude	≤3000 m
	Operating Temperature	-25°C to 55°C
	Noise	< 25 dB
	Humidity	5% – 95%
	Night Self Consumption	< 7 W
	Topology	Transformerless
	Protective Class	Class I
	Grid Side Connector	3-pin, 650 V, 25 A, IP68
	PV Side Connector	MC4, IP-67, UL E343181
	Weight	12 kgs
	Dimensions (H × W × D)	350 × 300 × 200 mm
Protection	Anti-Islanding	Integrated
	Input Reverse Polarity	Integrated
	SPD AC Side	350 Vac Type-III, Integrated
	SPD DC Side	1000 Vdc Type-III, Integrated
	Residual Current Monitoring	Integrated
	Output Over Current	Integrated
	Output Short Circuit	Integrated
	Grid Over Voltage	Integrated

Why the 4 kW

SiC MOSFET switching stages deliver consistent output with minimal heat generation.

No fans means zero moving parts, reduced noise, and lower maintenance over the system life.

50–420 V input range handles India's unstable grid without tripping or faulting.

Anti-islanding, SPD, RCMU and short-circuit protection - all integrated, no add-ons needed.

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Three Phase Solar Inverters →

5 kW to 15 kW - for commercial and industrial rooftops.

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FAQ

Is the Zenergize solar inverter BIS IS 16221 certified?

Yes, all Zenergize solar inverters carry BIS IS 16221 certification, the mandatory Indian standard for grid-connected solar inverters.

Are Zenergize inverters eligible for PM Surya Ghar subsidy?

Yes, BIS IS 16221 certified inverters qualify for the PM Surya Ghar subsidy Yojana scheme.

What makes SiC MOSFET better than IGBT for Indian conditions?

SiC MOSFETs operate efficiently at higher temperatures, making them ideal for India's climate - delivering 98%+ efficiency even at 50°C ambient.

What warranty does Zenergize offer on solar inverters?

Zenergize offers a 10-year warranty backed by a PAN-India service network across 40+ cities.