Compact DIN rail power supply offers efficiency and low standby power consumption

TDK Corporation has introduced the TDK-Lambda brand DRF960-24-1 DIN rail mount AC/DC power supply, rated at 24V 40A (960W) with a 60A (1,440W) peak for four seconds. The device has a very thin 110mm width, freeing further space for other DIN rail mount assemblies. With an efficiency of 95%, much less internal heat is generated, ending in cooler electrolytic capacitors. Operating field life is estimated at greater than 10 years at 75% load, 40C ambient, and 230VAC input. This energy efficient power supply is ideal for a broad 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 5VDC to 6VDC source, to counterbalance for blocking diodes or FETs in redundant configurations. Additionally, provided as standard, is a DC OK relay contact, rated at 30V 1A, and remote on/off functionality. The device power consumption is less than 1W to lessen energy consumption when the output is inhibited. Up to five units can be combined together in parallel when set in droop mode current share. The device is housed in a sturdy metal enclosure, measuring 123.4mm H x 139mm D x 110mm W. The power supply can perform from a broad range 180-264VAC, 47-63Hz input. Input to output isolation is 3,000VAC, input to ground 1,500VAC and output to ground 500VAC. The device is rated for operation in -25C to +70C ambient temperatures (-40C cold start), derating linearly above 60C to 50% load at 70C. 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.