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

• https://www.se.com/us/en/product/SDSA1175/surge-protection-device-surgelogic-36ka-120-240-vac-1-phase-3-wire-25ka-sccr-nema-4x/

The SDSA1175T is designed for 120V single phase (L1 & N) 36KA

• https://www.se.com/us/en/product/SDSA1175T/surge-protection-device-surgelogic-36ka-120-vac-1-phase-3-wire-25ka-sccr-nema-4x/

Released for:Schneider Electric Canada