Full specifications

Brand	Fox ESS
Inverter Specifications
Model	H3-Pro-20.0
Inverter type	Hybrid
Grid type	Three Phase
IP class	IP65
PV Input Data
Max DC input power	40000 W
PV input voltage	1000 V
MPPT voltage range	150-850 V
Max. PV input current	32 A
No. of MPPT	3
No. of strings per MPPT	2
Startup voltage	160 V
AC Output Data
Rated AC output	20000 W
Rated AC output current	30.3 A
Rated voltage	400 V
Parallel operation	Yes
Power factor	1 (adjustable 0.8 leading to 0.8 lagging)
Battery Data
Battery type	Lithium
Battery voltage range	150-800 V
Max. charging current	100 A
Max. discharging current	100 A
BMS	CAN
Protections
PV arc fault detection	Yes
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	52.5 kg
Operating temperature	-25°C ~ +60°C
Max. efficiency	97.20%
Size (W×H×D)	600 × 560 × 225 mm

Note: Two independent battery inputs at 50 A each, so 100 A combined charge and discharge - that is the feature separating the Pro from the standard H3. Battery range 150-800 V, but to hold full AC output the bank has to sit at 220-790 V. Three MPPTs, two strings each, 16+16 A per tracker. MPPT window is 150-850 V overall and 230-850 V at full load. EPS peak 24000 VA for 60 s with switchover under 10 ms; parallels to 10 units. European efficiency 96.30%, peak 97.20%. At 52.5 kg with smart fan cooling up to 45 dB this is not an indoor-quiet unit. Rated to 4000 m altitude.