{"id":8903,"date":"2026-11-11T15:52:59","date_gmt":"2026-11-11T07:52:59","guid":{"rendered":"https:\/\/www.qishan-sh.com\/?post_type=product&#038;p=8903"},"modified":"2026-11-11T15:52:59","modified_gmt":"2026-11-11T07:52:59","slug":"h-spd","status":"publish","type":"product","link":"https:\/\/www.qishan-sh.com\/en\/product\/h-spd\/","title":{"rendered":"H Series Surge Protective Device"},"content":{"rendered":"<p>The H series is a signal-type surge protective device (SPD), mainly used to protect field devices such as two-wire and three-wire transmitters, switches, frequency signals, communication equipment, RTDs and thermocouples, as well as control room equipment such as safety barriers, I\/O, DCS and PLC, from damage by lightning surge impulse voltages or switching overvoltages.<\/p>\n<p>The product features an ultra-slim 12.5mm design, supports hot swapping and remains connected after removal; it can be directly earthed via the DIN rail without a separate earth wire; high bandwidth and low insertion loss make it suitable for all types of signal circuits.<\/p>","protected":false},"excerpt":{"rendered":"<p>Signal-type surge protective device, 12.5mm ultra-slim, supports hot swapping without disconnection, direct DIN-rail grounding, high bandwidth and low insertion 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