The Celduc SO843970 is a solid state relay capable of handling a maximum switching voltage of 275 V AC or DC. This zero crossing switch is designed for efficient and reliable electronic switching in semiconductor applications. It is typically used in industrial automation, motor control, and heating systems. https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2025-05-10 https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2025-05-27 https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2025-08-13 https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2026-03-23 https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2026-07-16 https://elecena.pl/product/28642837/celduc-so843970-ssr-40a-max-275vac-dc-zero-crossing-1piece 2026-08-08