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5.3 MC4 Terminal Preparation
In the process of connecting optimizers, if the distance between terminals is too long, it is
necessary to prepare a pair of extension cables of suitable length with MC4 terminals at
each end.
The DC connector model of the optimizer is Staubli MC4. Please ensure that DC
connectors on extension cables are also Staubli MC4 or compatible to Staubli MC4
terminals. Otherwise, the loss caused is not covered by the warranty.
step 1 Strip the insulation layer of all DC cables to a length L of about 7 mm - 8 mm.
step 2 Assemble the cable ends with the wiring terminal by the crimping tool.
(1): Positive crimp contact (2): Negative crimp contact
step 3 Lead the cable through cable gland, and insert the crimp contact into the insulator until it
snaps into place. Gently pull the cable backward to ensure firm connection. Tighten the
cable gland and the insulator with a torque of 2.5 N.m - 3 N.m.
5 Electrical Connection User Manual
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