ABB 3BSC610023R0001 POWER SUPPLY SD812
The ABB 3BSC610023R0001 (Model: SD812) is a premium, industrial-grade DIN-rail mountable power supply unit designed to deliver highly stable and reliable 24 V DC power to critical automation systems.
Engineered specifically for seamless integration with ABB’s flagship control systems, such as the Advant OCS and System 800xA, the SD812 acts as the backbone of your control loop integrity.
It features robust built-in protection against overvoltage, overloads, and short circuits, ensuring continuous operation even in harsh, high-interference industrial environments.
Technical Parameter Table
| Parameter | Specifications |
| Product ID / Ordering Code | 3BSC610023R0001 |
| Model Designation | SD812 |
| Input Voltage Range | 100–240 V AC (Wide Range), 50/60 Hz |
| Output Voltage | 24 V DC (Adjustable) |
| Output Current | 3 A |
| Output Power | 72 W |
| Efficiency | > 85% typical |
| Mounting Type | DIN-rail (35mm) |
| Protection Rating | IP20 |
| Cooling | Natural convection |
| Operating Temperature | -25°C to +60°C |
Product Advantages and Features
Industrial-Grade Reliability: Built with high-tier components to maximize Mean Time Between Failures (MTBF) and minimize unplanned downtime.
Comprehensive Circuit Protection: Automatically protects against short circuits, thermal overloads, and unexpected input voltage spikes.
Compact Footprint: The slim DIN-rail design saves valuable rail space inside dense electrical control cabinets.
Optimized Compatibility: Native integration with ABB control networks removes the guesswork from system voltage sizing and power budgeting.
Low Ripple and Noise: Delivers exceptionally clean DC output, protecting sensitive analog I/O modules from electrical interference.
Application Cases
System 800xA & Advant OCS Powering: Acts as the primary or auxiliary 24 V DC power source for controller subracks, communication interfaces, and I/O clusters.
Oil & Gas Petrochemical Plants: Deployed in remote instrument enclosures where temperature fluctuations require highly stable power components.
Power Generation & Utilities: Supplies reliable power to turbine control systems, substation automation equipment, and sequence-of-events recorders.
Water & Wastewater Treatment: Powers field instrumentation, telemetry units, and localized PLC control panels.
Related Models & Other Models in the Same Series
ABB’s SD8xx power supply series offers various current ratings and configurations to suit different power budgets and redundancy requirements:
SD811 (3BSC610022R0001): 24 V DC, 1.2 A Power Supply Unit
SD812 (3BSC610023R0001): 24 V DC, 3 A Power Supply Unit (Current Model)
SD831 (3BSC610064R0001): 24 V DC, 5 A Power Supply Unit
SD832 (3BSC610065R0001): 24 V DC, 10 A Power Supply Unit
SD833 (3BSC610066R0001): 24 V DC, 20 A Power Supply Unit
SS822 (3BSC610042R0001): Voting/Redundancy Module (used to bridge two SD series supplies for fault-tolerant setups)
Installation and Maintenance
Installation
Mounting: Snap the unit securely onto a standard 35mm DIN rail horizontally. Ensure the ventilation slots at the top and bottom are not obstructed.
Clearance: Maintain a minimum clearance of 20mm above and below the unit, and 10mm on the sides to ensure optimal convection cooling.
Wiring: Use appropriately rated copper wire for input (AC) and output (DC) connections. Strip wires cleanly and torque the terminal screws to the manufacturer’s specified limits to avoid hot spots.
Maintenance
Visual Inspections: Periodically inspect the unit for dust accumulation or discoloration near the terminals.
Voltage Verification: Check the 24 V DC output during scheduled plant turnarounds to ensure it remains within the required tolerance.
Tightness Check: Ensure terminal screws remain tight in high-vibration environments.