FAQ02163 of Solid-state Relays FAQ

Examples of SSRs Internal Circuit Configuration

Load specifications

AC load

Load specifications

DC load

Load specifications

AC/DC load

Note 1:
The zero cross function turns ON the SSR when the AC load voltage is 0 V or close to 0 V. SSRs with the zero cross function are effective in the following ways.

・Clicking noise when a load is turned ON is reduced.

・Effects on the power supply are reduced by suppressing inrush current with loads, such as lamps, heaters, and motors, thereby reducing inrush current protection circuits.

Note 2:
For 200-V models, use a triac on the output switching elements.