Cost-effective DIN rail power supplies ideal for broad range of industrial applications

TDK Corporation has introduced two extra DRB DIN rail mount AC/DC power supplies, rated at 120W and 240W (144W/288W peak for 10 seconds). The devices have a very slim width, offering additional space for other DIN rail mount modules. Having efficiencies of 93%, less internal heat is created resulting in cooler electrolytic capacitors, a field life of greater than seven years at 75% load, 230VAC input. These models complete the cost-effective 15W to 480W DRB series, making it ideal for a broad range of industrial applications which includes factory automation, process control and test and measurement. The DRB120 and DRB240 models are housed in a sturdy metal enclosure, measuring 124mm in height, by 125mm deep and widths of 35mm and 41mm, respectively. The power supplies can run from a wide range 85–264VAC input and withstand a surge of 300VAC for five seconds. Both have a 24V output and offer an isolated DC OK optocoupler signal as well as an LED indicator. The outputs can be altered from 24-28V to compensate for series blocking diodes or FETs in redundant configurations. Input to output isolation is 3000VAC, input to ground 1500VAC and the output to ground is 500VAC. The DRBs are convection cooled and rated for operation in -25C to +70C ambient temperatures (cold start at -40C), derating linearly above 55C to 50% load at 70C.