40kW Interface Panel CEI 0-21
QIT40-1 is a 40kWp interface panel for 1 three-phase inverter, designed for grid-connected low-voltage photovoltaic systems.
A solution compliant with CEI 0-21, with IP65 protection rating and SPI test report included: less paperwork, faster on site.
The 40kW interface panel QIT40-1 is designed for photovoltaic systems with 1 three-phase inverter connected to the low-voltage grid. It is a ready-to-install solution for installers and electricians who need to manage interface protection in accordance with CEI 0-21, with useful technical documentation for the grid connection application.
Why do you need a photovoltaic interface panel?
In grid-connected photovoltaic systems, the interface protection system ensures that voltage and frequency remain within the specified limits. If grid parameters go outside the permitted thresholds, the device intervenes by disconnecting the system to prevent non-compliant feed-in. For this reason, the interface panel is a key component in installations subject to CEI 0-21 requirements and the distributor’s checks.
QIT40-1 technical specifications
| Product code | QIT40-1 |
| Type | Interface panel for photovoltaic systems |
| Rated power | 40 kWp |
| Supported inverters | No. 1 three-phase inverter |
| Reference standard | CEI 0-21 |
| Protection rating | IP65 |
| Documentation | SPI test report included |
| Application | Photovoltaic systems connected to the LV grid |
When is the interface panel mandatory?
The interface panel is used when the photovoltaic system requires an external interface protection system or specific documentation for grid connection. In practice, it mainly concerns professional and commercial systems, where the installer must submit to the local distributor a solution consistent with CEI 0-21 and with the technical requirements of the connection application.
What’s included in the supply?
- QIT40-1 interface panel for a 40kWp photovoltaic system.
- Configuration for 1 three-phase inverter.
- IP65 protection rating, suitable for technical environments and protected installations.
- SPI test report included, useful for the installer, designer, and grid connection application.
- Ready-to-integrate solution for the system’s electrical switchboard.
Why buy it on MR WATT?
MR WATT selects components for photovoltaic installers looking for technical, documented products ready for the jobsite. The advantage here isn’t just the panel: it’s having a clear datasheet, a targeted supply, and a product designed to reduce wasted time during the connection phase. To put it without catalog poetry: when the test report is missing, someone in the office ends up swearing.
Frequently asked questions
Is the QIT40-1 panel suitable for a 40kW photovoltaic system?
Yes, the QIT40-1 is designed for 40kWp photovoltaic systems with a three-phase inverter. It is recommended when you need CEI 0-21-compliant interface protection with the SPI test report included.
What does “SPI test report included” mean?
The SPI test report documents the tests of the Interface Protection System. It is a useful document for the grid connection application and for checks required by the local distributor.
Is the QIT40-1 interface panel compatible with any three-phase inverter?
It is designed for systems with a three-phase inverter, but compatibility should always be verified against the system’s wiring diagram and the requirements of the designer or distributor.
Does the IP65 rating allow outdoor installation?
The IP65 rating indicates protection against dust and water jets. However, it is still good practice to install the panel in a sheltered position, following technical guidelines, sun exposure, and ventilation.
Which documents are required for connecting a photovoltaic system to the grid?
Typically, you need the system’s technical documentation, declarations of conformity, wiring diagram, and documents related to interface protection. The included SPI test report helps complete the technical part of the application.
