Studer NEXT3

Category: Inverter/chargers
Brand: Studer

A three-phase 15 kVA inverter, a 48 V battery charger, a solar inverter with dual high-voltage MPPT tracker (2×8000 Wp), a transfer relay and self-consumption management are the core functions of the new Studer NEXT3 hybrid inverter.

STUDER NEXT3 48V, 3~ 400V, 15000VA, dual MPPT, 16 kWp
B2B export pricing — worldwide shipping, full Studer range

The Studer NEXT3 is an all-in-one three-phase hybrid solar inverter/charger of 15 kVA, designed and manufactured in Switzerland by Studer Innotec. In a single enclosure it combines a 48 V three-phase 400 V converter, a 300 A battery charger and a dual high-voltage solar MPPT regulator (2 × 8 kW), with intelligent self-consumption management for off-grid, back-up or grid-connected installations.

Why choose the NEXT3?

All-in-one: converter, battery charger and dual solar MPPT pre-wired and integrated, for a simplified installation and a considerable time saving.
Natively three-phase: a single unit drives all three phases (pumps, motors, three-phase loads), where three single-phase inverters were previously required.
High-voltage solar: 2 MPPT inputs accepting up to 900 Vdc and 2 × 12 kWp of modules, ideal for long strings and economical cabling.
Intelligent management: Power Flow Dispatcher® algorithm to optimise storage, self-consumption and exchanges with the grid.
Scalable: up to 3 units in parallel, i.e. up to 48 kVA.
All 48 V battery chemistries: lithium, lead (AGM/GEL), fully programmable charging parameters.
Swiss quality: Studer Innotec design and manufacture, 10-year warranty.

Technical specifications

Continuous power (25 °C)	15,000 VA
Power 30 min	16,000 VA
Peak power 5 s	up to 30,000 VA
Output voltage	3~ 380/400/415 Vac · 220/230/240 Vac (±1 %)
Output frequency	50/60 Hz (±0.02 %)
Battery voltage	48 Vdc (36–68 Vdc)
Max charging current	300 Adc (15,000 W)
MPPT inputs	2
Recommended MPP voltage	300–700 Vdc (900 Vdc max. open circuit)
Max solar current	2 × 20 Adc (nominal)
Solar power	2 × 8 kW (output) · 2 × 12 kWp recommended
Efficiency	up to 97 % (solar) · 95 % (battery conversion)
Transfer / AC Flex	3 × 80 Aac · dual grid-disconnection relay
Parallelling	up to 3 units (48 kVA)
Protection rating	IP20
Operating temperature	−20 to 55 °C
Dimensions (H×W×D)	320 × 450 × 760 mm
Weight	58 kg

Models & references

Reference	Format	Communication
next3 (nx3 st)	Wall / floor	Standard
next3 (nx3 sti)	Wall / floor	With extended interface
next3 rack (nx3 rack st)	19" rack	Standard
next3 rack (nx3 rack sti)	19" rack	With extended interface

All variants share the same electrical performance (15 kVA, dual MPPT). Contact SINES Export to select the reference best suited to your project.

Operating modes & coupling

Off-grid: autonomous supply of a three-phase installation from solar and batteries.
Grid-connected (on-grid): self-consumption, feed-in and intelligent energy-flow management via the Power Flow Dispatcher® algorithm.
Back-up: automatic switchover to battery in the event of a grid failure, thanks to the dual disconnection relay.
AC and DC coupling: integration of solar sources via DC coupling (through the 2 built-in MPPTs) or AC coupling.

Certifications

EU Low Voltage Directive 2014/35/EU
EU Electromagnetic Compatibility 2014/30/EU
Grid-code compliance: EU Regulation 2016/631, EN 50549-1:2019, VDE-AR-N 4105:2018, IEC 62116, IEC 61727

Discover the full Studer Innotec range distributed by SINES Export, including the Studer Xtender inverter/charger, as well as our other inverter/chargers and solar inverters.

SINES - Studer - NEXT3 three-phase solar and battery wiring

Three-phase wiring: solar, battery and grid with the Studer NEXT3

References & article codes

Article code	Description	Net / gross weight	Customs code (Country)
nx3 st	NEXT3 — 48 V, 3~ 400 V, 15 kVA, dual MPPT · wall / floor · standard	58.000 kg	— (Switzerland)
nx3 sti	NEXT3 — 48 V, 3~ 400 V, 15 kVA, dual MPPT · wall / floor · extended interface	58.000 kg	— (Switzerland)
nx3 rack st	NEXT3 rack — 48 V, 3~ 400 V, 15 kVA, dual MPPT · 19" rack · standard	58.000 kg	— (Switzerland)
nx3 rack sti	NEXT3 rack — 48 V, 3~ 400 V, 15 kVA, dual MPPT · 19" rack · extended interface	58.000 kg	— (Switzerland)