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How to wire the SDSA2040, SDSA4040, or SDSA3650 on single phase application.

Single Phase application for SDSA2040, SDSA4040, and SDSA3650 SPDs

Product Line:
Surge Protection Device

Single Phase Wring


The Square D brand SDSA3650, SDSA4040, SDSA2040 SPD can be configured to work in solidly grounded single phase applications. These SDSA SPDs are a four wire devices and will require the additional high leg of the SPD to be doubled up with either one of the other high legs.

*NOTE: When installing the SPDs into these applications it should be installed in accordance with all local codes and requirements.

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