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Multicluster Box — distribution cabinet for Sunny Island systems
Country: Germany · Model: Multicluster Box
The Multicluster Box distribution cabinet combines 2 to 12 three-phase clusters of 3 Sunny Island inverters each into an off-grid system of up to 360 kW. In backup systems it handles installations up to 138 kWp, and it leaves the factory fully assembled.
- Configuration
- 2–12 three-phase clusters of 3 Sunny Island each
- Off-grid system power
- up to 360 kW
- Backup systems
- up to 138 kWp
- Design
- fully factory-assembled
Technical specifications
| Configuration | 2–12 three-phase clusters of 3 Sunny Island each |
|---|---|
| Off-grid system power | up to 360 kW |
| Backup systems | up to 138 kWp |
| Design | fully factory-assembled |
| More from the manufacturer’s documentation | |
| Models | MC-Box 6 (MC-BOX-6.3-11), MC-Box 12 (MC-BOX-12.3-20), MC-Box 36 (MC-BOX-36.3-11), Grid-Connect-Box 12 |
| Rated voltage | 230 V (L–N) / 400 V (L–L) |
| AC voltage range (L–N) | 172.5–250 V (MC-Box 6, 36); 172.5–265 V (MC-Box 12) |
| Frequency | 50 Hz, 40–70 Hz (MC-Box 6, 36); 50 / 60 Hz, 45–65 Hz (MC-Box 12) |
| Number of Sunny Island units | 6 (MC-Box 6), 12 (MC-Box 12), 36 (MC-Box 36) |
| Sunny Island power (rated / at 45 °C) | 36 / 32 kW (MC-Box 6), 72 / 65 kW (MC-Box 12), 216 / 195 kW (MC-Box 36) |
| Load connection | 55 kW, 3 × 80 A (MC-Box 6); 138 kW, 3 × 200 A (MC-Box 12); 300 kW, 3 × 435 A (MC-Box 36) |
| Generator connection | 55 kW (MC-Box 6), 138 kW (MC-Box 12), 300 kW (MC-Box 36) |
| PV connection | 55 kW (MC-Box 6), 138 kW (MC-Box 12), 360 kW, 3 × 522 A (MC-Box 36) |
| Fuses | NH00 (MC-Box 6), NH1 (MC-Box 12), NH3 (MC-Box 36); C40 A circuit breaker per Sunny Island |
| Grid configuration | TN-S (MC-Box 6, 36); TN-S, TN-C-S, TT (MC-Box 12) |
| Dimensions (W × H × D) | 760 × 760 × 210 mm (MC-Box 6); 1,200 × 1,600 × 435 mm (MC-Box 12); 1,200 × 2,000 × 800 mm (MC-Box 36); 600 × 1,400 × 435 mm (Grid-Connect-Box 12) |
| Weight | 55 kg (MC-Box 6), 200 kg (MC-Box 12), 400 kg (MC-Box 36), 103 kg (Grid-Connect-Box 12) |
| Mounting | suspended (MC-Box 6), base-mounted (others) |
| Operating temperature | −25 °C to +50 °C (MC-Box 6); −25 °C to +60 °C (others) |
| Degree of protection | IP65 (MC-Box 6), IP55 (MC-Box 12), IP54 (MC-Box 36) |
| Relative humidity | 0–100% non-condensing |
| Installation altitude | ≤ 2,000 m |
| Functions | load-shedding contactor, automatic generator bypass, active anti-islanding, reverse current monitoring |
| Warranty | 5 years |
| Certificates | CE |
| Customs codes (for reference) | |
| HS code | 8537.10 |
| UKTZED code (Ukraine) | 8537109890 |
| CN code (EU) | 85371098 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
Battery inverter clusters, a diesel generator, loads and renewable sources all terminate in the cabinet. This is how off-grid networks and hybrid systems are built, with the generator and PV modules feeding a common 230 / 400 V bus. Only the external lines remain to connect on site, which saves switchboard assembly and switching design work. A load-shedding contactor, automatic generator bypass, active anti-islanding and reverse current monitoring are already inside. Each Sunny Island has its own C40 A breaker, and the feeders run through NH00, NH1 or NH3 fuses depending on cabinet size. The small MC-Box 6 weighs 55 kg and hangs on a wall, the MC-Box 12 and MC-Box 36 stand on the floor, at altitudes up to 2,000 m.
How to choose
Cabinet size follows the number of Sunny Island units, 6, 12 or 36. The MC-Box 6 is rated for 36 kW of inverter power and a 55 kW load at 3 × 80 A, the MC-Box 12 for 72 kW and 138 kW at 3 × 200 A, and the MC-Box 36 for 216 kW and 300 kW at 3 × 435 A. In a hot room use the 45 °C rating, which is 195 kW for the MC-Box 36. A single Sunny Island 6.0H / 8.0H cluster up to 24 kW does not need a multicluster cabinet.
Request a price and lead time
Multicluster Box — distribution cabinet for Sunny Island systems. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How many Sunny Island clusters connect to the Multicluster Box?
From 2 to 12 three-phase clusters, each with 3 Sunny Island units, so up to 36 inverters in the MC-Box 36.
What off-grid system power does the Multicluster Box support?
Up to 360 kW in off-grid systems and up to 138 kWp in backup systems. The PV input of the MC-Box 36 is rated 360 kW at 3 × 522 A.
Does the Multicluster Box need assembly on site?
No, the cabinet is fully assembled at the factory and the installer only connects external cables.
Which earthing systems does the Multicluster Box support?
The MC-Box 12 works with TN-S, TN-C-S and TT. The MC-Box 6 and MC-Box 36 are for TN-S only.
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.