Fronius 3.8kW Primo Gen24 Inverter, 240 VAC, 1-Phase, 200 - 480 VDC MPPT
The Fronius Primo GEN24 3.8kW inverter redefines what homeowners can expect from their solar energy systems. This advanced single-phase inverter not only delivers 240 VAC output and operates within a wide MPPT voltage range of 200 – 480 VDC, but also features a built-in backup power outlet—allowing essential devices to stay powered during the day, even without battery storage.
Engineered in Europe for quality and innovation, the Primo GEN24 is built to meet the dynamic needs of modern solar installations. Its Smart Shade Management ensures high yields even under partial shading, while active cooling extends system longevity and efficiency. Designed for adaptability, it supports future upgrades such as energy storage integration or smart home automation.
Whether you’re installing a new solar system or upgrading an existing one, the 3.8kW Primo Gen24 Inverter is a reliable, forward-compatible solution that supports long-term energy independence.
Key Benefits
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Integrated Backup Power
Maintain power to essential loads during daylight hours—no battery required.
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Wide MPPT Range (200–480 VDC)
Provides flexibility for various array designs and orientations.
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Smart Shade Tolerance
Maximizes energy yield in real-world shading conditions.
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Active Cooling System
Enhances efficiency and lifespan, especially in high-temperature environments.
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Future-Ready Design
Compatible with future energy storage and smart home solutions.
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European-Made Quality
Engineered and manufactured in Europe for performance and durability.
Specifications
Product Specifications
| Input Data |
| Number of MPP trackers |
2 |
| PV input power |
3940 W |
| Feed-in start voltage (Udc start) |
80 V |
| Min. MPP voltage (U mpp min) |
200 V |
| Max. MPP voltage (U mpp max) |
480 V |
| Output Data PV Point |
| Max. switchover time PV-Point |
17 s |
| Max. switchover time Full Backup |
17 s |
| General Data |
| Mains Frequency |
60 1/s, 50 1/s |
| Width |
474 mm |
| Height |
516 mm |
| Depth |
165 mm |
| Weight |
15.08 kg |
| Weight incl. packaging |
18.7 kg |
| Protection class |
1 |
| Overvoltage category (DC / AC) |
2 / 4 |
| Inverter design |
Transformerless |
| Cooling |
Active Cooling Technology |
| Installation |
Indoor and outdoor installation |
| Min. permissible ambient temperature |
-40 °C |
| Max. permissible ambient temperature |
60 °C |
| DC PV connection technology |
2x DC+1, 2x DC+2 and 4x DC- spring-type terminals (AWG14-8) |
| DC battery connection technology |
1x DC+ and 1x DC- spring-type terminals (AWG 12-8) |
| AC connection technology |
Spring-type terminals (AWG 14-8); Backup: AWG 16-8 |
| Back-up power functions |
PV Point |
| Sound emissions |
42 dB(A) |
| Interference emission class |
B |
| Protection Devices |
| DC insulation measurement |
Yes |
| Overload behaviour |
Operating point shift, Power limitation |
| DC disconnector |
Yes |
| DC Reverse polarity protection |
Yes |
| Arc fault circuit interrupter (Fronius Arc Guard) |
Yes |
| Interfaces |
| WLAN / 2x Ethernet LAN |
Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON) |
| 6x digital in/out + 6x digital in |
Interface to ripple control receiver, energy management |
| Emergency stop (WSD) |
Yes |
| Datalogger and web server |
Included |
| 2x RS485 |
Modbus RTU SunSpec / Fronius Smart Meter |
| Technical Data |
| Grid connection |
NPE |
Shipping & Returns
Shipping & Returns Overview
Order Confirmation:
As soon as you place your order, you will receive an order confirmation email. This email confirms that we have received your order in our system and pre-authorized your credit card for the purchase. As soon as we receive your order, we will start our fulfillment process. All orders are processed and shipped within 1-2 business days. Transit times vary from 5-7 business days.
Order Shipment:
We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at support@ecogridsupply.com.
No Shipping outside the USA.
Shipping Options:
Expect your order to arrive in 5 to 7 days. We offer free shipping for orders over $200. For orders below $200, a flat shipping fee of $15 applies.
Please note that we currently only ship within the United States. International shipping is not available.
The majority of our orders are dispatched via third-party freight carriers (18-wheelers). In case your order includes an item that requires freight shipping, we will contact you to schedule a curbside delivery. Ensure that your contact number is correct at checkout.
Returns & Refunds:
We accept returns and refunds within 30 days of your order being delivered to you. If your delivery is within the 30 day return and refund period please see our “Return Policy” in the footer of our website.
Why Buy From Us
Why Buy From Ecogrid Supply?
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Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products with full manufacturer warranties.
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Fast, Reliable Shipping: All items ship from our U.S. warehouses with quick and dependable freight options to keep your project on track.
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30-Day Hassle-Free Returns: Change your mind? No worries — enjoy a simple 30-day return process for peace of mind.
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Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just real people who know off-grid power systems.
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Expert Energy Guidance: Our solar and backup energy specialists are ready to help you with design, planning, product questions, and installation tips.
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USA-Based Service: Our team proudly operates here in the United States, providing local, knowledgeable, and friendly support.
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Secure Payments: Shop confidently with our encrypted, secure checkout to protect your personal and payment information.
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Built for Energy Independence: Whether you’re powering a cabin, prepping for emergencies, or going off-grid, our products are selected for performance, reliability, and sustainable operation.
