Siemens 6EP3437-8UB00-0AY0 Siemens

Product Overview The Siemens 6EP3437-8UB00-0AY0 is a 3-phase SITOP PSU3800 stabilized power supply providing 24 V DC output at 30-40 A, designed to feed industrial control systems. It accepts a wide-range three-phase AC input (400-500 V) and supports buffering to maintain output during supply interruptions. Typically deployed in automation cabinets, battery-backup systems, or drive power supplies, 6EP3437-8UB00-0AY0 ensures reliable power for PLCs, drives, sensors and safety systems. Best Suited For DIN-rail mounted industrial control cabinets Battery charging or backup power feeding downstream electronics Feeding power to PLC, drive or safety control modules High-current 24 V DC bus supplementation Input voltage range 400-500 V AC (three-phase) Output voltage 24 V DC Output current 30-40 A (load-dependent) Power loss (typical) 66 W at rated load Mounting DIN-rail EN 60715 35×15 mm Technical Specifications I/O & Electrical Input voltage range 400 - 500 V AC (three-phase) Input current at 400 V 2.1 A Input current at 500 V 1.7 A Inrush current limitation (max) 13 A Buffering time at rated current ≥ 10 ms Output voltage 24 V DC Adjustable output voltage 24 - 28 V via potentiometer Output current rated 30 - 40 A Supplied active power (typical) 960 W Power loss (typical) 66 W Relative control precision (input fluctuation ±15 %) 1 % (typical) Relative control precision (load step) 3 % (typical) Short-circuit protection Constant-current characteristic approx. 44 A; short-circuit proof Overvoltage protection < 31.8 V Communication & Power Auxiliary contacts Terminals 13, 14 (alarm); 15, 16 (remote), screw terminals Physical & Environmental Ambient temperature (operation) -25 … +70 °C Ambient temperature (storage/transport) -40 … +85 °C Protection class IP20 Dimensions W×H×D 135 × 145 × 150 mm Mounting method DIN-rail EN 60715 35×15 mm Net weight 3.3 kg