Full specifications

Brand	Fronus
Inverter Specifications
Model	ECO 4200 (Infineon Reborn)
Inverter type	Hybrid
Grid type	Single Phase
IP class	IP21
PV Input Data
Max DC input power	5200 W
PV input voltage	500 V
MPPT voltage range	60-450 V
AC Output Data
Rated AC output	4200 W
Rated AC output current	15.7 A
Rated voltage	230 V
Battery Data
Battery type	Lithium & Lead-Acid
Battery voltage range	24 V
Max. charging current	120 A
Max. discharging current	120 A
BMS	RS232 / WiFi / GPRS
Protections
PV reverse polarity detection	Yes
Insulation resistance detection	Yes
Leakage current detection	Yes
AC overcurrent protection	Yes
Output short circuit protection	Yes
Surge protection	Yes
Over voltage protection	Yes
General Specifications
Weight	9.0 kg
Operating temperature	-10°C ~ +50°C
Max. efficiency	97%
Size (W×H×D)	350 × 110 × 420 mm

Note: Hybrid with grid feed-in over a 195-253 VAC window, so it can be net-metered. This is the ECO revision of the Infineon Reborn PV5200: electrically the two are the same platform - 5200 W array, 24 V bank, 120 A solar and 100 A utility charging, 8400 W surge, 15.7 A output - but the ECO sheet adds three things the PV5200 sheet does not claim: an upgraded MPPT chipset, a built-in Wi-Fi controller for remote monitoring, and stated lithium-ion battery compatibility. If you are choosing between them, the ECO is the newer build. Dual load output: main circuit 4200 W, second circuit up to 1386 W in battery mode, so non-critical load can be shed as the bank drains. Transfer 10 ms in UPS mode, 20 ms for appliances. 3-step utility charging with flooded and AGM/gel set points. IP21 and rated -10 to +50 degC - indoor mounting only. Street price in Pakistan Rs 69,000 (enontraders.com, read 21 Aug 2026). Worth checking before you quote: the PV5200 lists around Rs 120,000 against this unit, a wide gap for two inverters with the same electrical spec.