0PS3400.1 B & R Automation
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The B & R Automation 0PS3400.1 is a power supply from the 0PS Power Supplies series with a nominal output voltage of 24 VDC and an output current of 40 Amps. This unit delivers an output power of 960 Watts and has an input current rating of 3x 2.0 Amps at 400 Vac. With IP20 protection, it weighs 3200 grams and measures 139 mm wide by 130 mm high by 190 mm deep.
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Product Description:
The 0PS3400.1 is a DIN-rail power module produced by B&R Automation for the 0PS Power Supplies series. It converts three-phase mains power into a stabilized 24 V rail for PLC backplanes, distributed I/O, and motion controllers installed in the same cabinet. By maintaining constant voltage under load, the unit provides stable logic levels and actuator signals in automation cells.
The supply provides a nominal output of 24 VDC ±1%, keeping downstream electronics within a tight tolerance band. It can deliver up to 40.0 A of continuous current, so a single unit can feed multiple axis controllers or fieldbus couplers. The maximum electrical output is 960 W when the full rated current flows at the nominal voltage. When connected to a 400 V AC network, the input stage draws 3 × 2.0 A, which helps determine breaker and cable requirements. A displacement power factor of 0.76 indicates the phase relationship between current and voltage and may influence harmonic filtering requirements. The input-to-output insulation withstands 4 kV AC, while the I²t value of 1.3 A²s indicates the energy that internal fuses must interrupt during short-circuit events. Heat dissipation reaches 87 W at full load, while idle losses are limited to 11 W to reduce standby consumption. Protection Class I grounding is required to protect against electric shock.
The supply operates without derating at elevations up to 4000 m above sea level, allowing installation in high-altitude plants. Its enclosure has an IP20 protection rating, preventing fingers from contacting hazardous internal parts while permitting cooling airflow. The unit has a mass of 3200 g, which must be considered when selecting and securing the mounting rail. Its required cabinet depth is only 190 mm. A width of 139 mm and a height of 130 mm allow the module to fit on standard 300 mm-deep panels while leaving room for adjacent contactors and network switches.
