Square 3G-OTH-127860 — Technical Specifications

The SQUARE D Surge Protection Device: Three Phase (MPN HL4IMA16C) is a Square D QO, HOM, I-Line and NQ Internal Panel-Mount SPD designed for I-Line Panelboards. It operates on a 277/480V AC Wye system with 4 wires plus ground, L-L configuration, and a 320 V AC voltage rating. Key specifications include a 1500V (L-N) protection level, 200kA surge current capacity, and dry contacts for remote monitoring.