Solid-State Switching Devices for Resistive Loads Solid-State Relays 3RF22 solid-state relays, three-phase, 45 mm ■ Dimensional drawings Solid-state relays Screw terminal Spring-type terminal Ring terminal lug connection 3RF22 ..-1.... 3RF22 ..-2.... 3RF22 ..-3.... Spring-type terminal Screw terminal 95 47,5 69 77 69 NSB0_01689a 13 26 30 31 47 29 29 33 45 47 ■ Schematics Two-phase controlled, DC control supply voltage Three-phase controlled, DC control supply voltage NSB0_01694 NSB0_01696 24 Siemens · 2009 1 L1 3 2 T1 4 L2 5 L3 A1 + A2 - T2 6 T3 1 L1 2 T1 3 L2 5 L3 A1 + A2 - 4 T2 6 T3