The new Foldback DC Power Supply from Finder

The new 78.50 switch mode power supply from Finder now features ‘foldback’ overload protection. This feature has been introduced to meet market demands by extending application coverage to include lead acid battery charging – this is not compatible with the hiccup mode of protection on the rest of the 78 series.

The prime purpose of 'foldback' protection is to keep the output transistor within its safe power dissipation limit. If the load attempts to draw over current from the supply, 'foldback' reduces both the output voltage and current to well below the nominal operating limits.

The product also has a plethora of design features, as the rest of the range, to improve reliability and efficiency. This gives control system builders a stable and dependable low voltage DC supply, up to 91% efficient and only 0.4W in standby.

This series of modular, rail mounted DC power supplies now comprises models covering outputs rated 24VDC/12W, 24VDC/36W, 24VDC/60W, 12VDC/12W and 12VDC/50W. All these support a wide AC or DC supply range capability of respectively 100-265VAC and 140-370VDC.

Finders 78 series include:

• Supply overvoltage protection
• Thermal protection with fast output voltage shut down
• Short circuit and overload protection with hiccup protection (auto-recovery)
• High inrush current handling capability

To help minimise downtime in the event of a fault, the power supply inputs are protected by an easy access internal fuse, with an adjacent spare fuse ensuring an even more immediate fix.

The 35mm rail mounted power supplies measure only 17.5 or 70 mm wide by 60mm deep and can help to reduce control panel size. Conforming to EN60950-1 and EN61204-3 norms, they are fully compliant with global EMC standards for power supply design.

For more info email info@routeco.com or call 0370 607 1000.