Studer VarioString VS-120 Dual MPPT Controller

In stock at Victoria Island, ready for pickup

The Studer VarioString VS-120 is a dual MPPT solar charge controller rated 120A at 48V, delivering up to 7kW per unit. Its two fully isolated MPPT inputs can be wired independently or in parallel (2 x 3.5kWp, 200-600Voc) or in series (7kWp, 400-900Voc), giving great flexibility in string design and reducing balance-of-system costs. Tool-free SUNCLIX PV connectors, full isolation between PV and battery, programmable ground fault protection and protection against incorrect wiring make installation safe and simple. Best-in-class tracking gives MPPT efficiency >99% with >98% conversion efficiency, while night self-consumption stays below 1.25W. A fully programmable 4-stage charger (Bulk, Absorption, Float, Equalization) and 9 status LEDs support long battery life, and up to 15 units can be paralleled for 105kW. It integrates with Studer Xtender systems for synchronized battery management, with display, programming and data logging via the optional RCC-02/-03 and web access through Xcom-LAN or Xcom-GSM.

• Maximum output current (battery):120A (60A/MPPT)
• Nominal battery voltage:48V
• Operating voltage range:38-68V
• Maximum solar power recommended (@STC):MPPT 1: 3500W / MPPT 2: 3500W / 1+2 in parallel: 7000W / 1+2 in series: 7000W
• Maximum PV current:MPPT 1: 13A / MPPT 2: 13A / 1+2 in parallel: 26A / 1+2 in series: 13A
• Maximum open circuit voltage:MPPT 1: 600V / MPPT 2: 600V / 1+2 in parallel: 600V / 1+2 in series: 900V

• Pickup at Victoria Island. Collect from 273A Kofo Abayomi Street once your transfer is confirmed.
• Pay by bank transfer. Invoice and account details sent to your WhatsApp after you order.
• Installation available. Our engineers install and commission. Request a system quote.
• Datasheet. Download the manufacturer PDF (2888 KB).