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AC Combiner Box 40 A Three-Phase with Type 2 SPD
AC Combiner Box 40 A Three-Phase with Type 2 SPD
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€144.03
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€144.03
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Businesses and non-Italian private customers: purchase with 22% VAT. The 10% rate is reserved for private customers resident in Italy — find out more.
Foreign companies entitled to 0% VAT: please write to info@litio.store.
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AC Combiner Box 40 A Three-Phase with Type 2 SPD
Alternating current combiner box for three-phase photovoltaic systems, designed for the highest power ratings in the range. It is installed on the AC side between the inverter output and the distribution board and gathers line protection and surge protection into a single enclosure.
The equipment includes a 40 A miniature circuit breaker for overload and short-circuit protection of the three-phase line, with an inverter isolation function, and a Type 2 surge protective device (class II) that limits transient surges of indirect atmospheric and switching origin. On a 400 V three-phase grid, 40 A corresponds roughly to inverters up to about 27.7 kW.
Key features
High rating40 A three-phase: suited to inverters with an indicative power output of up to about 27.7 kW.
40 A circuit breakerIt protects the grid connection cable against overloads and short circuits even with high operating currents.
Type 2 surge arresterIt limits the transient surges coming from the grid, reducing the risk of inverter failure.
Simplified installationThe box comes already assembled: there is no need to build a dedicated AC-side enclosure on site.
Inverter isolationIt allows the generation system to be quickly isolated from the grid.
Room for wiringEnclosure measuring 319 × 259 × 144 mm and weighing 2.2 kg, with an internal volume suited to conductors of a larger cross-section.
Technical specifications
| Feature | Value |
|---|---|
| Switchboard type | AC combiner box for photovoltaic systems |
| System side | Alternating current (AC), between the inverter and the distribution board |
| Number of poles / phases | Three-phase (3L + N) |
| Nominal current | 40 A |
| Indicative inverter power | Up to approx. 27.7 kW (400 V three-phase, 40 A) |
| Surge protective device (type) | Type 2 SPD (class II) |
| Miniature circuit breaker (MCB) | Sì, 40 A |
| Residual current device (RCD) | Not present |
| Dedicated isolator switch | Not present: isolation is provided by the miniature circuit breaker |
| Dimensions | 319 × 259 × 144 mm |
| Weight | 2.2 kg |
| Reference standards of the components | EN 61643-11 (surge protective devices), EN 60898-1 (miniature circuit breakers) |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.