Solid-state contactor for repetitive switching
The Siemens 3RF3330-1BA26 is a 1-pole SIRIUS 3RF33 solid-state contactor rated AC-15 / 15 A at 40 °C, with a control supply voltage range of 110-230 V AC and a main circuit voltage range of 48-600 V. It uses instantaneous switching and screw terminals for wiring. The AC-15 rating means it is designed for switching electromagnetic loads like contactor coils, valves, and solenoids — the inductive inrush and breaking duty typical of these loads, not resistive heating elements.
Snap-on mounting to DIN rail EN 60715. The 105 x 27 x 122 mm envelope fits standard control-panel gland-plate layouts. For 40 °C ambient, the 15 A AC-15 rating is the full thermal capacity; above that, derate per the thermal curve in the datasheet.