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SDSA1175 SDSA1175T Selection, Voltage, Wiring, and Ground

Problem: Choosing between SDSA1175 or SDSA1175T for ordering.

Product Options: SDSA1175 120/240V or SDSA1175T 120V surge protection devices (SPDs) with a surge current rating of 36kA per phase.

Environment: 120V 1P Single Phase or 240/120V 1P Split Phase.

Reason: Ordering the wrong SPD requires return/exchange, if possible. One SPD cannot substitute for the other. It is crucial to order the correct SPD with the appropriate voltage code.

It is essential to order the appropriate SPD with the correct voltage code. If you have 120V 1P, the SDSA1175T is the correct SPD, not the SDSA1175 120/240V.
It is essential to order the appropriate SPD with the correct voltage code. If you have 240/120V 1P, the SDSA1175 is the correct SPD, not the SDSA1175T 120V.

Solution: SDSA1175 and SDSA1175T units lack a green wire for connection to the electrical system ground. The neutral wire, usually a larger #AWG wire, provides a lower impedance path back to the N-G Bond. SDSA1175 and SDSA1175T have a white neutral wire, used for surge current dissipation back to the electrical system service entrance.

Details:

SDSA1175: Three-wire surge suppressor for 120/240 VAC services (2 phase conductors, a neutral, and no ground).
SDSA1175T: Two-wire surge suppressor for 120 VAC services (1 phase conductor, a neutral, and no ground).

Product Family - SDSA1175 SDSA1175T

The SDSA1175 is designed for 120/240V single phase (L1-L2 & N) 36kA