Celduc Relais Solid State Relays SO969940

The SO969940 is a single-phase zero-cross solid state relay designed for resistive loads (AC-51) with an output voltage range of 24 to 600 VAC and a nominal current of 125 A rms. It features back-to-back thyristors with TMS2 technology, an input control range of 18 to 280 VAC/DC, and a green LED indicator. Output overvoltage protection is provided by TVS diodes on the gate terminals, and IP20 protection is achieved through removable flaps on the terminals. The relay requires mounting on a heatsink and has a thermal resistance junction-to-case of 0.25 K/W. It provides 4000 Vrms isolation between input and output, operates from -40 to +100°C, and satisfies IEC/EN60947-4-3, IEC 60335-1/VDE0700-1, and cURus requirements.