Electrical Connection SMA America, LLC
56 SI5048U-TUS121440 Technical Description
4. Connect the wires to the 3-pole print terminals included in delivery. The pins have the following
meaning:
– NC: normally closed (when the Sunny Island is
off, the relay is closed)
– C: Contact (operating contact)
– NO: normally opened (when the Sunny Island is
off, the relay is open).
5. Tighten the terminals (torque: 5 in‑lbs. ‑ 7 in‑lbs. (0.56 Nm ‑ 0.79 Nm)).
6. Insert the 3-pole print terminal into the corresponding socket on the Sunny Island.
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