3RV2031-4XA10 Siemens Electronic Components

QS20.481

PULS QS20.481 is a power supply unit designed for AC/DC conversion with a 50% power reserve. It features DIN rail mounting and operates within an ambient air temperature range of -25 to +70°C. The unit is equipped with a DC-OK relay contact output and offers a rated current of 10A at 48Vdc and 8.7A at 55Vdc, with a power derating from 12W at +60°C to +70°C. Connection is facilitated through spring-clamp connections. The supply voltage ranges from 85Vac to 264Vac for AC input and 88Vdc to 188Vdc for DC input, supporting various nominal voltages and featuring specific turn-on and shutdown voltages. Housed in an aluminium casing, it is suitable for single-phase (1AC) or DC networks, with dimensions of W82mm x H124mm x D127mm. The rated power is 480W, with a short-term capacity of 720W for up to 4 seconds. Output voltage is adjustable between 48Vdc and 55Vdc. Protection functions include output overvoltage protection and overload/short-circuit protection, with capabilities for series or parallel operation for increased output power. Efficiency rates vary with input voltage, and the unit exhibits specific current consumption, time delay, hold time, power dissipation/losses, and electrical durability metrics. Ripple is maintained at 100mVpp, and the output stage capacitance is 3100 µF.

Puls