Litio Store
AC Combiner Box Three-Phase 20 A with Type 2 SPD and 100 mA Type A RCD
AC Combiner Box Three-Phase 20 A with Type 2 SPD and 100 mA Type A RCD
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€171.26
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€171.26
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AC Combiner Box Three-Phase 20 A with Type 2 SPD and 100 mA Type A RCD
The alternating current combiner box is the protection and isolation board installed on the AC side of a photovoltaic system, between the three-phase inverter output and the building's main board. It encloses in a single watertight wall-mounted housing all the protections required for connecting the photovoltaic generator in parallel with the distribution grid, avoiding the need to assemble several DIN rail devices on site.
Inside there are a Type 2 surge protective device (SPD), which discharges to earth the overvoltages induced by indirect lightning strikes and by grid switching operations, protecting the inverter electronics, a 20 A three-phase miniature circuit breaker for overload and short-circuit protection and for isolating the line, and a 100 mA Type A residual current device, also sensitive to the pulsating unidirectional fault currents typical of static converters.
Key features
Surge protectionThe Type 2 surge arrester limits the overvoltages induced by indirect lightning strikes and grid switching operations, safeguarding the inverter and the downstream loads.
100 mA Type A RCDThe Type A residual current device detects alternating and pulsating unidirectional fault currents, such as those generated by the inverter power electronics.
20 A three-phase MCBProtects the AC line against overloads and short circuits and allows the system to be isolated manually and safely.
IP65 watertight enclosureThe box, made of halogen-free recyclable plastic, is fully protected against dust and water jets, suitable for outdoor mounting as well.
Ready to installThe box arrives factory-wired and tested: installation times and possible wiring errors are reduced compared with on-site assembly.
IK08 mechanical strengthThe enclosure withstands accidental impacts and UV radiation, keeping its seal even after years of outdoor exposure.
Technical specifications
| Feature | Value |
|---|---|
| Switchboard type | AC combiner box (inverter-grid parallel panel) |
| System side | Alternating current (AC) |
| Number of poles / phases | Three-phase, 400 V AC |
| Nominal current | 20 A |
| Surge protective device (SPD) | Type 2 SPD for AC networks |
| Miniature circuit breaker (MCB) | Three-phase, 20 A |
| Residual current device (RCD) | 100 mA, Type A |
| Protection rating | IP65 |
| Impact resistance | IK08 |
| Enclosure | Recyclable halogen-free plastic material, UV resistant |
| Operating temperature | from -25 °C to +60 °C |
| Dimensions | 319 × 259 × 144 mm |
| Weight | 2.44 kg |
| Standards | IEC 61439-1, IEC 61439-2; LVD 2014/35/EU, EMC 2014/30/EU and RoHS 2011/65/EU directives |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.