The solid-state relay SSR25D is an electronic power DC switch. It is designed to commutate huge electrical loads (up to 25A), driven by constant voltage of 24/36/48Vdc.
Solid state relays SSR10/20/40 are electronic power a.c. switches. They are designed to commutate huge electric loads (up to 2,2/4,4/8,8 kW), supplied by mains voltage 220V/50HZ.
Solid-state relays SSR2X10Y, YN are electronic power a.c. switches. They are designed to commutate huge electrical loads (up to 2x2.2kW), powered by mains voltage 220V/50Hz.