SMA SI-TB-BOX-10 - Manual (Page 59)

SMA America, LLC 12 Troubleshooting
Installation Manual SI_TDBOX-IA-eng-IUS122211 59
12.2 Replacing Miniature Circuit-Breakers "F4" and "F5"
1. Release the upper screw terminals of miniature
circuit-breakers "F4" and "F5" and remove the
conductors. Use a PZ 2 screwdriver or a suitable
cross-head screwdriver.
2. Release the lower screw terminals of miniature
circuit-breakers "F4" and "F5" and remove the
conductors. Use a PZ 2 screwdriver or a suitable
cross-head screwdriver.
Danger to life due to electric shock
High voltages that can result in electric shocks are present in the live components of the
Smartformer.
• Disconnect the Smartformer from the power supply before performing any work on the
Smartformer (see Section 10).
• Always use a contact hazard protection cover when operating the Smartformer.
• Work on the Smartformer may only be performed by a skilled worker.
• Do not touch live components of the Smartformer or other components of the
Sunny Island system.