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SMA Technologie AG Electrical Connection
Installation Guide SMC50A_60A-IEN073320 Page 27
6.3 Connection of the DC Input
6.3.1 Requirements
For connecting the DC input, the following requirements must be satisfied:
1. The connected strings must consist of modules of the same type and number and
should have an identical orientation and tilt.
2. The connecting wires of the solar modules must be equipped with plug connectors
to allow the eight DC plug connectors of the Sunny Mini Central to be connected
to it.
A pre-assembled set for connecting the free cable ends from a string is available
as an optional accessory from SMA:
3. Make sure that the following limit values at the DC input of the Sunny Mini Central
are not exceeded:
4. Check the system design and the string size using the design program Sunny
Design which is available to download free at www.SMA.de.
Connection set Order code Maximum
flow current
Multi-Contact 3 mm SWR-MC 21.0 A
Multi-Contact 4 mm MC-SET 30.0 A
Tyco TYCO-SET 30.0 A
Device Maximum
input voltage
Maximum
input current
SMC 5000A 600 V (DC) 26.0 A (DC)
SMC 6000A 600 V (DC) 26.0 A (DC)