TSNI 100TS 32Y4 P301 ISNI SERIES,SURGE PROTECTIVE DEVICE (SPD/TVSS) TSNI SERIES, SURGE PROTECTIVE DEVICE (SPD/TVSS) INDUSTRIAL GRADE, 3 TIER HYBRID; 100KA PER MODE (200KA PER PHASE); 480/277VAC WYE, 3PH 4W + GROUND); FIBERGLASS NEMA 4X ENCLOSURE TYPE 3 MONITOR LED INDICATION; AUDIBLE ALARM FORM C CONTACTS