The electrical circuit diagrams of FN9260/FN261 series are shown on this slide. The FN9260 requires two 20mm x 5mm fuses, the FN261 requires a single 20mm x 5mm fuse; fuses are not supplied with the inlets. “B” versions (medical) are without any Y capacitors to earth (chassis). “A” versions (safety) are equipped with reduced value Y capacitors (low leakage).