CS7E-B31E-220E Sprecher + Schuh Power Relays

QS20.241

PULS QS20.241 is a power supply unit designed for DIN rail mounting, featuring AC/DC conversion with a 50% power reserve. It operates within an ambient air temperature range of -25 to +70°C and offers a design that includes a DC-OK relay contact output. The unit provides a rated current of 20A at 24Vdc and 17A at 28Vdc, utilizing spring-clamp connections for connectivity. It supports a supply voltage range of 85Vac-264Vac for AC and 88Vdc-188Vdc for DC, with specific nominal values listed for both. The QS20.241, part of the Q-series, measures 82mm in width, 124mm in height, and 127mm in depth, and is housed in an aluminium casing. It is compatible with single-phase (1AC) or DC networks, offers a rated power of 480W with a short-term capacity of 720W for up to 4 seconds, and provides an adjustable DC output voltage of 24Vdc-28Vdc. Protection features include output overvoltage protection and active input inrush current limiting, with overload and short-circuit protection. The unit allows for series or parallel operation for increased output power and is designed to handle back-feeding loads without malfunctioning. Efficiency rates vary with input voltage, and the unit exhibits specific current consumption, time delay, hold time, power dissipation/losses, electrical durability, ripple, and capacitance characteristics as detailed in the specifications.