The Phoenix Contact QUINT4-PS/3AC/24DC/20 is a reliable power supply unit designed for industrial applications. It features primary-switched technology combined with Selective Fuse Breaking (SFB), which helps protect your system by isolating faults effectively. This model operates with a three-phase input voltage ranging from 400 to 500 VAC at 50 to 60 Hz and delivers a stable 24 VDC output at up to 20 amps. One of its key advantages is the built-in mains buffering capability, which provides more than 25 milliseconds of power hold-up to support critical loads during brief power interruptions. The device also includes an NFC interface for easy parameter setting and diagnostics without needing to open the cabinet. Installation is straightforward with screw connections, and status is clearly communicated through integrated LED indicators. The switching frequency varies between 25 and 500 kHz, allowing for efficient operation. This power supply is available through BSP Automation, offering a robust solution for your power management needs.