Knowledge Base › External MPPT Controllers
Studer Innotec VS-120
Official manufacturer GLOBAL verified Sept. 23, 2026
Identity
| category | external_mppt_controllers |
| manufacturer | Studer Innotec |
| model | VS-120 |
| product_status | active |
| region | GLOBAL |
| variant | — |
Electrical
| battery_voltage_max_v |
68
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| battery_voltage_min_v |
38
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| battery_voltage_nominal_v | 12/24/36/48V Auto |
| battery_voltage_supported |
48
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| charge_current_a |
120
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| max_charge_current_a | 30.0 |
| max_dc_voltage_v | 100.0 |
| max_efficiency_pct | 98.0 |
| max_efficiency_percent |
98
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| max_pv_open_circuit_voltage_v | 100.0 |
| max_pv_power_w |
7000
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| max_pv_voltage_v |
900
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| mppt_voltage_max_v |
500
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| mppt_voltage_min_v |
250
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| number_of_mppt |
2
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| number_of_pv_inputs |
2
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| standby_consumption_w |
1.25
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
Physical / mechanical
| dimensions_mm |
133 x 322 x 466
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| height_mm |
133
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| length_mm |
466
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| weight_kg |
7.5
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| width_mm |
322
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
Environment
| ip_rating |
IP20
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| operating_temperature_max_c |
55
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
| operating_temperature_min_c |
-20
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
Interfaces & connectors
| communication | RS485 (Modbus) |
Certifications
| certifications |
['EN/IEC 62109-1', 'EN/IEC 61000-6-2', 'EN/IEC 61000-6-4']
Studer variostring datasheet (VS-70 / VS-120) v2.2
|
Documents
product_page
Studer Innotec VS-120 product page
user_manual
Manuel VarioString V2.6 EN
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| builder_completeness | partial |
| region_notes | Studer Innotec publishes one specification for the VarioString range worldwide. |