Siemens 6EP3437-8SB00-0AY0 — SITOP DC power supply. DIN-rail primary-switched regulated 24 VDC power supply for automation panels. SITOP PSU8200 24VDC 40A (960W) 3-phase power supply. High efficiency (>93%), full load 60°C, 150% power reserve. Installed in low-voltage switchgear panels, main and sub-distribution boards, motor control centres and DIN-rail consumer units.