Fronius Primo 12.5-1 208/240V Single Phase Grid-Tie Inverter

$4,990.00

or $230.17/mo for 24 mo at 9.96% APR with

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The Fronius Primo 12.5-1 is a transformerless single-phase grid-tie inverter delivering 12,500 W of continuous output at 208/240 VAC with 97.9% peak efficiency (96.5% CEC). Its dual MPPT trackers and wide 260-800 V MPP range maximize harvest across up to 18.75 kW of PV, backed by a 10-year warranty.

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Pickup in Red Deer, AB Pickup as early as Wed, Sep 2

Datasheet

Installation Manual

Warranty

Overview

The Fronius Primo 12.5-1 is a transformerless single-phase grid-tie inverter built for residential and light commercial PV systems on 208/240 VAC service. It delivers 12,500 W continuous output with 97.9% peak efficiency (96.5% CEC), two MPPT trackers, and a 260-800 V MPP voltage range. A NEMA 4X enclosure and -40°F to 140°F rating suit indoor or outdoor Canadian installations, with up to 18.75 kW of PV input.

Key Features:

12,500 W continuous at both 208V and 240V
97.9% peak efficiency, 96.5% CEC
Transformerless topology, 2 MPPT trackers
MPP range 260-800 V, operating 80-1,000 V
Max PV input 1000 VDC, 33.0 A per tracker
Up to 18.75 kW max PV power, 60.1 A output
NEMA 4X enclosure, -40°F to 140°F
Integrated AFCI, DC disconnect, reverse-polarity protection
Ethernet, WiFi, Modbus, RS422, USB communication
UL 1741, IEEE 1547, NEC 690, 10-year warranty

Ideal for rooftop and ground-mount solar arrays up to 18.75 kW on single-phase 240 V service. Its recommended 80 A AC breaker, wide conductor terminals, and standard connectivity make it a straightforward fit for installers integrating monitoring, optional revenue-grade metering, and code-compliant rapid shutdown.

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