4550W - 48V Off/On Grid Solar Kit - 3kVA Victron - All in One

4550W 48V Off/On-Grid Solar Kit with 3kVA Victron EasySolar-II GX – All-in-One Solar Power System

Product Overview

The Sunshine Solar 4550W 48V Off/On-Grid Solar Kit with 3kVA Victron EasySolar-II GX (KITPK4550348VENB) is a high-capacity solar power package designed for properties and buildings that need to generate renewable electricity and integrate solar power with a suitable battery storage and AC power system.

Featuring ten 455W N-type TOPCon bifacial solar panels and the Victron Energy EasySolar-II GX all-in-one inverter/charger, this kit provides a combined 4550W nominal solar panel capacity alongside integrated solar charging, AC power conversion and system monitoring.

The Victron EasySolar-II GX combines a MultiPlus-II inverter/charger, SmartSolar MPPT charge controller and GX monitoring device in one pre-wired enclosure. This integrated design helps simplify system integration and reduces the need to install these core components separately.

Designed for suitable off-grid and compatible AC-connected installations, the Sunshine Solar 4550W kit may be considered for remote properties, garden offices, workshops, summer houses, static caravans, stables and outbuildings.

Please note: The listed kit contents do not include batteries. A compatible 48V battery bank must be selected separately if required for the intended installation. Battery compatibility, solar array configuration and the intended grid-connected operating mode should be confirmed before purchase.

Key Features and Benefits

• 4550W solar array: Ten 455W solar panels provide a combined nominal rated capacity of 4550W.
• 48V Victron power system: Built around the Victron EasySolar-II GX 48V 3000VA inverter/charger.
• N-type TOPCon bifacial solar panels: Modern solar modules designed to generate electricity from front-side sunlight and, where installation conditions permit, additional light reaching the rear surface.
• Integrated MPPT solar charging: The EasySolar-II GX incorporates a SmartSolar MPPT charge controller to manage solar energy harvesting.
• All-in-one Victron design: Combines an inverter/charger, solar charge controller and GX monitoring device in one enclosure.
• AC power conversion: Converts compatible 48V battery DC power into 230V AC electricity.
• AC charging capability: The inverter/charger can charge a compatible battery bank from a suitable AC input when configured for the installation.
• System monitoring: The GX device provides access to system information and supported configuration options.
• Installation accessories included: Supplied solar extension cables, battery cables and a DC isolator support system installation.
• Flexible applications: Suitable for appropriately designed off-grid and compatible AC-connected solar power projects.

What's Included in the 4550W Solar Kit?

The Sunshine Solar KITPK4550348VENB includes the following listed components:

• 10 × 455W N-type TOPCon bifacial solar panels with black frames
• 2 × 10-metre solar extension cable sets with connectors
• 1 × black 35mm² battery cable with 8mm lugs, 2 metres long
• 1 × red 35mm² battery cable with 8mm lugs, 2 metres long
• 1 × two-string DC isolator switch
• 1 × Victron Energy EasySolar-II 48V 3000VA GX all-in-one unit

Batteries are not listed as included in this product configuration. A suitable 48V battery bank and any additional components required for the installation should be selected to match the system design.

Check the current product listing and manufacturer documentation to confirm the complete bill of materials, cable requirements and compatibility before ordering.

Victron Energy EasySolar-II GX – All-in-One Solar Power Management

At the heart of this kit is the Victron Energy EasySolar-II GX, a combined inverter/charger, solar charge controller and system monitoring unit.

3kVA MultiPlus-II Inverter/Charger

The integrated inverter converts DC electricity from a compatible 48V battery bank into 230V AC electricity for compatible appliances and equipment.

The charger function can also charge the connected battery bank from a suitable AC source, such as a compatible mains or generator supply.

The 3kVA rating represents apparent power, rather than a guarantee of 3000W continuous real-power output. The exact usable output depends on the model's specifications and operating conditions. Check appliance consumption and starting-current requirements when planning the system.

SmartSolar MPPT Charge Controller

Maximum Power Point Tracking (MPPT) technology adjusts the solar array's operating point to help harvest available solar energy as sunlight and panel conditions change.

The EasySolar-II GX incorporates a SmartSolar MPPT charge controller. Solar string design must comply with the controller's maximum PV voltage, current and power limits, including cold-weather open-circuit voltage requirements.

Integrated GX Monitoring

The GX device provides system information and control functions through its display and supported connectivity options. Depending on the installation and network configuration, users can monitor relevant solar, battery and inverter/charger information using compatible devices and Victron monitoring services.

By integrating these functions in one enclosure, the EasySolar-II GX can simplify system design compared with installing each core component separately.

4550W of N-Type TOPCon Bifacial Solar Power

The solar array comprises ten 455W N-type TOPCon bifacial panels, providing a total nominal rated capacity of 4550W, or 4.55kW.

N-type TOPCon cell technology is designed for efficient solar electricity generation. The bifacial panel construction can also capture light reaching the rear of the module, potentially increasing energy yield when the mounting arrangement and surrounding surfaces provide suitable conditions.

The listed panel specifications include:

• Model: Sungrow SG-48TG4D-455
• Rated panel power: 455W each
• Total panel quantity: 10
• Combined nominal array capacity: 4550W
• Cell technology: N-type TOPCon
• Panel type: Bifacial, dual-glass construction
• Listed module efficiency: Up to 22.8%
• Frame: Black-anodised aluminium alloy
• Junction box: IP68 rated
• Listed maximum system voltage: 1500V
• Listed product warranty: 25 years
• Listed linear performance warranty: 30 years

Refer to the manufacturer's datasheet and applicable warranty terms for full conditions, exclusions and technical requirements.

How Much Electricity Can a 4550W Solar Array Generate?

A 4550W solar array has a nominal rated output of 4.55kW under standard test conditions. This is not a guarantee that the system will continuously generate 4550W or produce a fixed quantity of electricity every day.

Actual generation depends on several factors, including:

• Location and local weather conditions
• Season and available daylight hours
• Panel orientation and tilt
• Shading from trees, buildings or other obstructions
• Panel temperature and ventilation
• Rear-side light exposure for bifacial modules
• Solar controller limits and system conversion losses

In the UK, solar electricity generation generally varies significantly between summer and winter. A well-positioned, minimally shaded array can help improve performance, but a site-specific estimate is recommended when calculating expected annual generation.

The amount of energy available to appliances also depends on whether a compatible battery bank is installed, how it is charged and the conversion losses associated with the system.

Battery Storage Requirements

This kit listing does not include batteries. If battery storage is required, a compatible 48V battery bank must be purchased separately.

Battery selection should take account of:

• Daily electricity consumption in kWh
• Expected overnight and low-sunlight usage
• Battery chemistry and manufacturer-approved charging settings
• Required usable capacity and depth of discharge
• Maximum charging and discharging current
• Compatibility with the Victron inverter/charger
• Battery management system requirements, where applicable
• Backup requirements during prolonged periods of poor weather

The nominal energy capacity of a battery bank can be calculated by multiplying its nominal voltage by its amp-hour rating and dividing by 1000. However, nominal capacity is not the same as routinely usable energy. Usable capacity depends on battery chemistry, settings, temperature, discharge rate and manufacturer recommendations.

Selecting a suitable battery bank is essential if the system needs to supply electricity after sunset or during periods when solar generation is insufficient.

Where Can the Sunshine Solar 4550W Kit Be Used?

The 4550W 48V Victron solar kit can be considered for a range of applications where the solar array, battery storage and inverter capacity are appropriately designed.

Remote Properties and Cabins

Generate solar electricity for suitable remote buildings where a conventional mains connection is unavailable or limited. Battery storage can be added to support electricity use outside daylight hours.

Garden Offices and Workshops

Supply solar energy for compatible lighting, computers, tools and other equipment. Check the simultaneous load and start-up current of equipment before choosing the system configuration.

Summer Houses and Outbuildings

Use the solar array as part of a suitably designed power system for outbuildings, stables, garages and summer houses.

Static Caravans

Provide a potential solar power solution for compatible static caravan installations, subject to battery requirements, appliance demand, wiring and installation conditions.

Off-Grid and AC-Connected Solar Systems

The Victron inverter/charger supports integration with a compatible AC source. The suitability of any grid-connected or export arrangement depends on the final system design, approved operating mode and applicable UK electrical requirements.

Grid connection and export should not be assumed to be automatically authorised by the presence of an inverter/charger. Obtain appropriate professional advice before connecting the system to a property's electrical installation.

With ten 455W bifacial panels and the Victron EasySolar-II GX 3kVA all-in-one inverter/charger, the kit provides the core solar generation and power conversion components for a range of remote buildings, workshops, garden offices and other suitable properties.

Before ordering, confirm the battery requirements, solar string configuration, expected electricity consumption and intended operating mode. This will help ensure the system is correctly sized for the property and its energy needs.

Technical note: Always check the current Sunshine Solar product listing and manufacturer datasheets for the definitive specifications, included components, compatibility requirements and warranty terms.