The TDK-Lambda brand DRF960‑24‑1 has a very narrow 110mm width, freeing additional space for other DIN rail mount assemblies. The efficiency of 95 percent means significantly less internal heat is generated, resulting in cooler electrolytic capacitors. Operating field life is calculated at greater than 10 years at 75% load, 40°C ambient, and 230Vac input. This energy efficient power supply is suitable for a wide range of industrial applications including factory automation, process control and test and measurement equipment.
The 24V output is adjustable from 24 to 28V, using the front panel potentiometer or an external 5 to 6Vdc source, to compensate for blocking diodes or FETs in redundant configurations. Also provided as standard is a DC OK relay contact, rated at 30V 1A, and remote on/off functionality. The DRF960 power consumption is less than 1W to reduce energy consumption when the output is inhibited. Up to five units can be connected together in parallel when set in droop mode current share.
The DRF960 is housed in a robust metal enclosure, measuring 123.4mm in height, 139mm deep and a width of just 110mm. The power supply can operate from a wide range 180 - 264Vac, 47 - 63Hz input. Input to output isolation is 3,000Vac, input to ground 1,500Vac and output to ground 500Vac. The DRF960 is rated for operation in -25°C to +70°C ambient temperatures (‑40°C cold start), derating linearly above 60°C to 50% load at 70°C.
The unit is safety certified to IEC/EN/UL/CSA 60950-1, UL 508 and is CE marked for the Low Voltage, EMC and RoHS Directives. The unit meets EN 55032-B radiated and conducted emissions, and complies with the EN 61000-4 immunity standards.
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