LTC4366 Telecom Application

Dear Sir,

Below LTC4366 Surge Stopper/-48V System will Support.

External 230V-AC to 48V-DC (41.5A) Power Supply Unit gives  (+) Terminal ,   (-) Terminal and  PE Protective Earth terminal , for telecom Application, Equipment,  (+) Terminal and PE Protective Earth terminals are Shorted at Power Supply.

Specification of Surge Stopper at (-) Terminal,   Nominal Voltage -48V,  Expected to Stop Surge of ± 500V or ±1000V

Below Schematics.

Can you Pls Clarify on the LTC4366 For Telecom Application.