TRANSTECTOR FSP 4003 MC 1101-372-3 DATA LINE SPD SURGE SUPPRESSOR 54VDC NEW Data Surge Protector SPD FSP Indoor RS-232, RS-422, Sense Loops Screw Terminal SASD 52 V Item #: TRT-1101-372-3 New Transtector FSP 4003 MC byJuly 5, 2026