Description
ABB SD831 3BSC610064R1 is a 24V DC switch power module with DIN rail installation launched by ABB. It is a supporting power supply unit for the 800xA series DCS system and is designed specifically for internal power supply in industrial automation control cabinets.
ABB SD831 Power Supply 3BSC610064R1
In terms of core parameters, the input voltage supports 100 to 240VAC or 110 to 300VDC, adapting to the power standards of different regions around the world, and supporting a frequency range of 50 to 60Hz. The output is 24V DC, with a rated current of 3A and a maximum power of 72W. The output ripple and noise are less than 50mV peak to peak, and the typical conversion efficiency is 88%. Built in two-stage conversion circuit, the shell temperature rise is controlled within 25K when fully loaded, without the need for additional heat dissipation gaps. The protection functions include overload protection OL, overvoltage protection OVP, over temperature protection OTP, and short-circuit hiccup protection. The working temperature range is from minus 25 degrees Celsius to plus 70 degrees Celsius, and there is no need to reduce the rating for use below 70 degrees Celsius.
In terms of physical specifications, the module width is only 32 millimeters, with dimensions of 32 by 102 by 124 millimeters (width by depth by height), weighing approximately 430 grams, and installed using a 35 millimeter standard DIN rail according to EN 60715 standard. The shell is made of corrugated aluminum structure with IP30 protection level. The front is equipped with LED status indicator lights, with amber color indicating overload and red indicating overtemperature. There is also a free power supply with normal dry contacts that can be directly connected to the 800xA digital input for SOE event recording without the need for additional relays.
In terms of system integration, this module can achieve redundant power supply through the SS822 voting module. Two SD831s combined with the SS822 voter can form a redundant hot swappable power supply solution, ensuring that critical control circuits are not interrupted due to single point power failures. Based on ABB’s redundant network routing protocol RNRP, it supports fast switching of network level redundancy. MTBF data exceeds 350 years (Telcordia SR-332 standard), and on-site ten-year operation data shows that the repair rate of 50000 shipped equipment is less than 0.2%.
Typical applications include supplying power to AC 800M controllers and S800 I/O modules in OEM sled mounted equipment, clean environments in the pharmaceutical industry that are sensitive to dust and require fanless power supply, offshore wellhead platforms that require short-term power outage support, and industrial sites with clear requirements for small-sized, high reliability 24V power supply in various 800xA DCS systems. There are also SD832 (5A), SD833 (10A), and SD834 (20A) in the same series, which can be flexibly selected according to the load scale.
Summary in one sentence: ABB SD831 3BSC610064R1 is a 32mm ultra-thin DIN rail 24V/3A switching power supply, with a wide input range, low ripple, high efficiency, and SS822 redundancy expansion capability as its core. It is the standard power supply module in ABB 800xA DCS system that balances compactness and process control level reliability.
