FRONIUS 4,210,061,801 PRIMO 7.6-1 LITE 208-240VAC Inverter

Fronius Primo 7.6kW Single-Phase Solar Inverter, Lite

208/240V Grid-Tied String Inverter with Dual MPPT and SnapINverter Technology

7,600W AC Output | 208/240V | Single-Phase | Dual MPPT
The Fronius Primo 7.6-1 Lite is a high-efficiency, single-phase grid-tied solar inverter designed for residential and compatible light commercial photovoltaic installations. Featuring Fronius SnapINverter technology, two independent MPPT trackers, integrated DC disconnect, and advanced electrical protection, the Primo Lite delivers reliable DC-to-AC conversion with an installation-friendly design.

Product Highlights

7.6kW rated AC output: 7,600VA at both 208V and 240V.
Single-phase operation: Compatible with properly configured 208V or 240V grid connections.
Dual MPPT: Two independent maximum power point trackers.
Recommended PV array: Approximately 6.1kW to 11.7kW DC.
96.9% maximum efficiency: High-efficiency DC-to-AC power conversion.
96.0% CEC efficiency: Published weighted efficiency rating.
SnapINverter technology: Simplifies wall mounting, wiring, and servicing.
Integrated DC disconnect: Supports installation and maintenance safety.
Integrated AFCI: Arc fault detection and interruption functionality.
NEMA 4X enclosure: Suitable for approved indoor and outdoor installations.
Lite configuration: Supplied without the integrated Datamanager communication package.

Manufacturer Part Number: 4,210,061,801

Product Configuration: Fronius Primo 7.6-1 Lite, 208/240V.

Not Included: Solar panels, battery storage, racking, external rapid shutdown devices, and optional monitoring or communication accessories.

Fronius Primo 7.6kW Grid-Tied Solar Inverter

The Fronius Primo 7.6-1 Lite is designed to convert electricity generated by solar panels into grid-compatible AC power for residential and light commercial solar systems.

With 7,600W of rated AC output and support for 208V and 240V single-phase connections, the Primo Lite offers flexible integration with compatible electrical service configurations.

Its two independent maximum power point trackers help optimize solar energy production from separate PV strings. This is especially useful for installations with different roof orientations or array configurations.

The inverter's transformerless design delivers up to 96.9% maximum efficiency, while Fronius active cooling helps manage operating temperatures and support dependable performance.

Built around Fronius SnapINverter technology, the Primo Lite separates the mounting and connection area from the inverter's power electronics. This approach simplifies installation, wiring access, and future servicing.

The Lite configuration is particularly suited for projects where integrated Fronius Datamanager monitoring is not required or where compatible communication equipment will be provided separately.

Dual MPPT for Flexible Solar Array Design

The Fronius Primo 7.6-1 Lite includes two independent maximum power point trackers designed to optimize energy harvest from connected PV strings.

Dual MPPT Advantages

Two independent trackers: Supports separately optimized solar array inputs.
Flexible string configuration: Useful for arrays with different orientations or operating characteristics.
18A maximum usable input current per tracker: 36A combined usable input current.
27A maximum array short-circuit current per tracker: Subject to manufacturer design requirements.
250V to 480V MPPT range: Published range for the standard Primo Lite 7.6-1 configuration.
80V DC start-up voltage: Allows inverter start-up when sufficient DC voltage is available.

Solar string sizing must account for the selected panels' operating voltage, open-circuit voltage, temperature coefficients, current ratings, and the inverter's exact DC voltage configuration.

Important DC Voltage Note: The Fronius Primo Lite datasheet specifies a standard maximum DC input voltage of 600V, with a 1,000V option identified separately. Do not assume this particular MPN includes the 1,000V option without confirming its exact factory configuration.

Fronius SnapINverter Technology

Fronius SnapINverter technology is designed to make solar inverter installation and servicing more straightforward.

The inverter uses a two-part construction that separates the connection area from the power electronics.

Installation and Service Benefits

Wall-mounted connection area: Supports organized installation and electrical wiring.
Removable power stage: Allows the inverter electronics to be serviced without removing all field wiring.
Accessible connection terminals: Helps simplify installation and maintenance.
Integrated DC disconnect: Reduces the need for a separate inverter-level DC disconnect in applications where the integrated device meets requirements.
Active cooling: Variable-speed fan helps regulate inverter temperature.
Compact design: Suitable for approved residential equipment locations.

This architecture can reduce service complexity and make the Primo Lite an attractive choice for solar installers familiar with the Fronius platform.

What Is the Difference Between Fronius Primo and Primo Lite?

The primary difference is the integrated communication and monitoring equipment.

The standard Fronius Primo configuration includes a Datamanager communication package for supported network connectivity and online monitoring functions.

The Primo Lite configuration does not include that integrated Datamanager package.

Primo: Includes integrated Datamanager communication functionality.
Primo Lite: Designed for applications that do not require the integrated Datamanager or that use separately purchased compatible communication equipment.
Power conversion: Both configurations retain the applicable inverter model's rated power output.
Monitoring: Confirm the required Datamanager hardware and system compatibility before purchasing monitoring accessories.

Monitoring Note: The Lite designation does not mean the inverter has built-in Wi-Fi monitoring. Fronius Solar.web connectivity and certain advanced monitoring functions require compatible additional communication equipment.

Integrated Safety and Protection Features

The Fronius Primo 7.6-1 Lite incorporates multiple protection features designed for properly installed grid-connected solar systems.

Arc Fault Circuit Interruption: Integrated AFCI functionality helps detect applicable DC arc fault conditions.
Anti-Islanding Protection: Disconnects grid export when required utility grid conditions are not present.
Ground Fault Protection: Includes isolation monitoring and fault protection functions.
DC Reverse Polarity Protection: Provides protection against applicable reverse-polarity conditions.
Integrated DC Disconnect: Supports safe inverter isolation when used according to manufacturer instructions.
Overtemperature Protection: Uses active cooling and output derating when necessary.
Rapid Shutdown Support: Can be incorporated into a compliant rapid shutdown design using the appropriate equipment.
NEMA 4X Enclosure: Designed for suitable outdoor and indoor installation environments.

Additional rapid shutdown devices, disconnects, overcurrent protection, or other equipment may be required depending on the installation and applicable electrical code.

Recommended Solar Panel and System Applications

Fronius lists a recommended PV array power range of approximately 6.1kW to 11.7kW DC for the Primo Lite 7.6-1.

This range supports solar array designs with DC capacity above the inverter's 7.6kW AC output, allowing appropriate DC oversizing to help improve energy harvest across varying sunlight conditions.

Actual allowable solar array size depends on the inverter's voltage configuration, MPPT current limits, panel specifications, installation temperatures, and local electrical requirements.

Ideal Applications

Residential grid-tied rooftop solar systems
Compatible single-phase 208V and 240V solar installations
Solar arrays with two independently tracked PV inputs
Projects using appropriately sized DC solar arrays
Ground-mounted solar installations
Solar inverter replacements where electrical compatibility has been confirmed
Installations using separate monitoring or energy management equipment
Solar contractors familiar with Fronius SnapINverter equipment

Product Specifications

Specification	Details
Manufacturer	Fronius
Product Series	Primo Lite
Model	Primo 7.6-1 Lite
Manufacturer Part Number	4,210,061,801
Inverter Type	Grid-Tied String Inverter
Output Phase	Single-Phase
Rated AC Output	7,600W / 7,600VA
Nominal AC Voltage	208V / 240V
Nominal Grid Frequency	60Hz
Maximum Continuous AC Current at 208V	36.5A
Maximum Continuous AC Current at 240V	31.7A
Manufacturer AC Breaker Size at 208V	50A
Manufacturer AC Breaker Size at 240V	40A
Maximum Efficiency	96.9%
CEC Efficiency	96.0%
Recommended PV Array Power	6.1kW to 11.7kW DC
Number of MPPT Trackers	2
Maximum Usable DC Current per MPPT	18A
Maximum Combined Usable DC Current	36A
Maximum PV Short-Circuit Current per MPPT	27A
DC Start-Up Voltage	80V
Nominal DC Input Voltage	420V
Standard DC Operating Voltage Range	80V to 600V
Standard MPPT Voltage Range	250V to 480V
Standard Maximum DC Input Voltage	600V
Optional Maximum DC Input Voltage	1,000V, configuration dependent
Power Factor Range	0.85 to 1, Inductive / Capacitive
Total Harmonic Distortion	Less Than 5%
Inverter Topology	Transformerless
Cooling	Variable-Speed Fan / Active Cooling
Enclosure Rating	NEMA 4X
DC Disconnect	Integrated
Arc Fault Protection	Integrated AFCI
Ground Fault Protection	Integrated
Anti-Islanding	Integrated Grid Protection
Rapid Shutdown	Supports Compliant System Designs with Required Equipment
Integrated Datamanager	Not Included in Lite Configuration
Monitoring	Optional Compatible Communication Equipment Required
Mounting System	Fronius SnapINverter
Nominal Operating Mode	Grid-Tied
Battery Storage Included	No
Solar Panels Included	No

Important Installation Notes

Grid-tied inverter: The Primo Lite requires a compatible utility grid connection and is not a standalone off-grid inverter.
208/240V single-phase: Confirm the property's actual electrical service configuration before installation.
Dual MPPT: PV strings must be sized to meet the inverter's voltage and current limits.
DC voltage configuration: Verify whether the supplied unit is the standard 600V configuration or a separately specified 1,000V option.
Monitoring: The Lite version does not include integrated Datamanager hardware.
Rapid shutdown: Additional equipment may be required to satisfy current rooftop rapid shutdown requirements.
Battery backup: The Primo Lite does not independently provide battery charging or backup power during a utility outage.
Permitting: Verify the exact model's certification status and utility interconnection eligibility for the installation jurisdiction.
Professional installation: Installation and commissioning should be performed by qualified personnel according to Fronius instructions and applicable electrical codes.

Frequently Asked Questions

What is the Fronius Primo 7.6kW Lite inverter?

The Fronius Primo 7.6-1 Lite is a 7.6kW single-phase grid-tied solar string inverter designed to convert DC electricity from solar panels into 208V or 240V AC electricity. It features dual MPPT trackers, SnapINverter technology, and integrated electrical protection.

What is the difference between Fronius Primo and Primo Lite?

The primary difference is integrated communications. The standard Primo includes Datamanager functionality, while the Lite configuration is supplied without the integrated Datamanager package. The Lite designation does not reduce the inverter's 7.6kW rated output.

Does the Fronius Primo Lite include Wi-Fi monitoring?

No integrated Datamanager is included in the Lite configuration. Fronius Solar.web monitoring and network communication require compatible additional equipment. Verify the appropriate Datamanager accessory before purchasing.

Is this a single-phase or three-phase inverter?

The Fronius Primo 7.6-1 Lite is a single-phase solar inverter. It supports compatible 208V and 240V AC grid connections. Confirm the site's electrical service configuration before installation.

Can this inverter operate at both 208V and 240V?

Yes. Fronius specifies 7,600VA maximum AC output at both 208V and 240V. The maximum continuous AC output current is 36.5A at 208V and 31.7A at 240V.

How many solar panels can connect to this inverter?

The number of solar panels depends on their wattage, voltage, current, and string configuration. Fronius lists a recommended array power range of approximately 6.1kW to 11.7kW DC. Final string sizing must remain within the inverter's electrical limits.

Can I use 400W or 450W solar panels with the Fronius Primo 7.6kW?

Potentially. Both 400W and 450W modules may be suitable when the complete string configuration meets the inverter's MPPT voltage range, maximum input voltage, usable input current, and short-circuit current requirements. Panel wattage alone does not establish compatibility.

What does dual MPPT mean?

Dual MPPT means the inverter has two independent maximum power point trackers. Each tracker can optimize a connected PV input independently, which can help with arrays that have different orientations or operating characteristics.

What is the maximum DC input voltage?

The Primo Lite datasheet specifies a standard maximum DC input voltage of 600V, with a 1,000V option identified separately. Confirm the exact voltage configuration of the supplied unit before designing PV strings.

How efficient is the Fronius Primo 7.6kW Lite?

The manufacturer lists a maximum efficiency of 96.9% and a CEC weighted efficiency of 96.0% for the Primo Lite 7.6-1.

What is Fronius SnapINverter technology?

SnapINverter technology separates the inverter's wall-mounted connection area from its power electronics. This design simplifies wiring access, installation, and servicing because the power stage can be removed while the connection area remains mounted.

Can the Fronius Primo Lite be installed outdoors?

Yes. The Primo Lite has a NEMA 4X enclosure designed for approved indoor and outdoor applications. Follow Fronius requirements for mounting location, ventilation, clearances, and environmental conditions.

Does the Fronius Primo Lite include an integrated DC disconnect?

Yes. The inverter includes an integrated DC disconnect. Additional disconnect equipment may still be required depending on the system design and applicable electrical codes.

Does this inverter have arc fault protection?

Yes. The Fronius Primo platform includes integrated arc fault circuit interruption functionality. All required electrical protections must still be evaluated as part of the complete installation.

Does the Fronius Primo Lite support rapid shutdown?

The inverter supports rapid shutdown system designs, but additional equipment may be required to meet current rooftop rapid shutdown requirements. The complete installation must be evaluated against the applicable electrical code.

Can this inverter charge batteries?

No. The Primo Lite is a grid-tied solar string inverter, not a hybrid battery inverter. Battery storage requires a separately designed compatible storage system and associated equipment.

Will the Fronius Primo Lite provide power during a grid outage?

No. The inverter is designed for grid-connected operation and shuts down when the utility grid is unavailable. It does not independently provide backup electricity during an outage.

Can this inverter be used with an existing solar system?

Potentially. The Primo Lite may be suitable for a new installation or an inverter replacement if the existing solar array, AC connection, rapid shutdown equipment, and utility requirements are compatible. A qualified installer should evaluate the system before replacement.

What AC breaker size does this inverter require?

The Fronius Primo Lite datasheet lists a 40A AC breaker at 240V and a 50A AC breaker at 208V. Final overcurrent protection, conductor sizing, and installation requirements must be determined according to the manufacturer's instructions and applicable electrical codes.

Is the Fronius Primo Lite UL certified?

Fronius documentation for the Primo platform identifies UL 1741 and other applicable safety and interconnection standards. Confirm the exact supplied model's current listing and utility approval status, particularly where newer IEEE 1547-2018 or UL 1741 SB requirements apply.

Does the inverter include solar panels or batteries?

No. This product listing is for the Fronius Primo 7.6-1 Lite inverter. Solar panels, batteries, racking, external rapid shutdown equipment, and optional monitoring accessories are not included.

Can I oversize the solar array beyond 7.6kW?

Yes, subject to the manufacturer's design limits. Fronius lists a recommended PV array power range of 6.1kW to 11.7kW DC. The inverter's AC output remains limited to 7.6kW, and all DC voltage and current limits must be respected.

Product information is based on published Fronius Primo Lite technical documentation. Specifications may vary by production version, voltage option, certification status, and regional configuration. Verify the exact MPN, included accessories, installation requirements, and applicable utility approval before purchasing or installing.