EHA-PSU-704-A-10 by Vickers

The EHA-PSU-704-A-10 is a single-output industrial power supply produced by Vickers for use in the EHA Power Supplies series. Designed for control cabinets and machinery nodes, the unit converts an alternating-current input into a regulated direct-current rail that feeds sensors, relays, and programmable controllers. Within an automation cell, it functions as the centralized source of 24-volt logic power, ensuring that downstream devices receive stable energy while electrical noise and supply variation on the mains side are isolated from sensitive electronics.

The supply accepts an input line of 115/230 V AC with a permissible variation of ±5 %, permitting connection to either North American or European distribution networks without manual tap changes. Its input stage is synchronized to mains at 50/60 Hz, so the same model can operate in regions with different grid standards. Internally, the converter delivers a regulated rail of 24 V DC, which is the nominal voltage required by most PLC I/O and field instrumentation. The output path can deliver a continuous 10 A of current, providing sufficient headroom for simultaneous actuation of solenoids, contactors, and indicator lamps.

To protect upstream wiring and downstream loads, the primary side is safeguarded by a 20 AT time-lag fuse that tolerates inrush charging while still interrupting sustained overcurrent faults. On the secondary side, peak-to-peak ripple remains below 5 %, so the direct-current rail stays within logic thresholds even under load transients. Low ripple also helps reduce unwanted behavior in sensitive control inputs and signaling circuits. The steel chassis and heat-sink assembly weigh 5.5 kg, allowing panel mounting without additional brackets. This housing also provides a rigid base for fixed installation inside industrial enclosures.