Solid State relay for use in control systems when system is required to switch on and off a 40-530V AC load by a control signal (on/off).
When the control input receives between 4 and 32V DC, the unit automatically switches on, when it passes the zero voltage point, and switches off next time it passes the zero voltage point when voltage is removed.
If solid state relay 1-phase 20A is used for electrical heating the actual load current must not exceed 18A.