QT40.242 Puls AC/DC Power Supplies

PULS QT40.242 is a power supply unit designed for AC/DC conversion with a 50% power reserve. It supports DIN rail mounting and operates within an ambient air temperature range of -25 to +70°C. This unit features an extended lifetime and includes a DC-OK relay contact output. It provides a rated current of 40A at 24Vdc and 34.3A at 28Vdc, with a derating to 24W between +60°C and +70°C. The QT40.242 utilizes screw-clamp connections and accepts a wide range supply voltage of 323Vac-576Vac across various nominal voltages (380Vac / 400Vac / 415Vac / 440Vac / 480Vac / 500Vac / 525Vac; 47-63Hz) with a 3-phase input. It belongs to the Q-series and is housed in an aluminium casing with dimensions of W110mm x H124mm x D127mm. Designed for a 3-phase network, it has a net width of 110 mm and offers a rated power of 960W (up to 1440W short-term for 4s). The output voltage is adjustable between 24Vdc and 28Vdc. Protection features include output overvoltage protection and active input inrush current limiter, with overload and short-circuit current protection supporting both series and parallel operation. The unit is resistant to back-feeding loads up to 35V. It achieves an efficiency of 0.952 to 0.953 depending on the input voltage, with a peak current consumption of 6A max. inrush. The start-up delay ranges from 500-600s, with a rise time of 35-40ms and a hold time of 25ms. Power dissipation/losses are 47.3W to 48.4W, depending on the input voltage. Electrical durability varies with conditions, reaching up to 475,000 hours at 25°C and 20A output with a 3AC 400Vac input. Ripple is maintained at 100mVpp, and the output stage capacitance is 10200 µF.

About the manufacturer: Puls is one of the manufacturers that offers AC/DC Power Supplies that you can order at Powermatic Associates site. Puls specializes in AC/DC power supplies, dedicating its efforts solely to the development of premium DIN rail power supplies. As a leading authority in power conversion, Puls distinguishes itself through focused engineering and an unwavering commitment to quality, positioning itself as the top leader in the field. This dedication ensures the highest standard in the industry, reflecting in every product they offer.

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