ABB SD823 3BSC610039R1 Power Supply 24V DC 10A | AC 800M S800 I/O

ABB SD823 Power Supply Device - High-Current 24V DC Industrial Power Solution

The ABB SD823 (3BSC610039R1) represents industrial-grade power conversion technology engineered for high-capacity AC 800M distributed control systems and S800 I/O networks. This robust DIN-rail power supply delivers 10A continuous output at 24V DC with >85% efficiency, supporting large-scale automation installations across process industries, manufacturing facilities, and infrastructure applications requiring reliable, high-current power distribution.

Technical Specifications

High-Current Power Architecture

10A Continuous Output Capacity: The SD823 delivers double the current capacity of standard 5A power supplies, supporting large S800 I/O configurations with 40+ modules per power supply. This high-current capability reduces the number of power supplies required in distributed control systems, simplifying panel design and reducing installation costs.

Switch-Mode Efficiency: Advanced high-frequency switching topology achieves >85% conversion efficiency across the full load range, minimizing heat dissipation and enabling fanless convection cooling. The compact 120mm width occupies minimal DIN-rail space while delivering 240W output power—equivalent to three standard 3A supplies in one-third the footprint.

Dual Voltage Input: Front-panel switch selects 115V or 230V AC operation, accommodating global voltage standards without requiring separate part numbers for different regions. This universal input design simplifies spare parts inventory and enables equipment relocation between facilities with different electrical infrastructure.

Protection & Reliability Features

• Overvoltage Protection: Electronic crowbar circuit clamps output to safe levels during transient conditions, protecting downstream control modules from voltage spikes that could cause permanent damage
• Overcurrent Limiting: Constant-current foldback reduces output during overload conditions, allowing temporary inrush currents while preventing thermal damage to power supply components
• Short-Circuit Protection: Hiccup-mode operation cycles power on/off during sustained short circuits, protecting both the power supply and wiring infrastructure until the fault is cleared
• Thermal Management: Automatic derating above 50°C ambient temperature extends component lifespan in high-temperature industrial environments. Full 10A output available up to 50°C without forced ventilation
• Input Transient Immunity: Surge suppression withstands 2kV common-mode and 1kV differential-mode transients per IEC 61000-4-5, ensuring operation in electrically noisy industrial environments
• EMC Compliance: Integrated filtering meets EN 55011 Class A emissions limits and IEC 61000-4 immunity requirements for industrial automation equipment

Industrial Applications

Large-Scale DCS Installations: Powers AC 800M controller racks with multiple processor units, communication modules, and I/O interfaces in chemical plants, refineries, and pharmaceutical manufacturing facilities requiring centralized control of 500+ I/O points.

Distributed S800 I/O Networks: Supplies remote I/O cabinets containing 30-50 S800 modules distributed across process areas. The 10A capacity supports full racks of digital inputs, analog outputs, and specialty function blocks without requiring multiple power supplies.

Redundant Power Architectures: Pairs with SS822 Voting Units to create N+1 redundant power configurations for mission-critical applications. Two SD823 units operating in parallel provide 20A total capacity with automatic failover protection during single-supply failures.

Panel Builder Applications: Integrates into OEM control panels for packaging machinery, material handling systems, and assembly line controllers requiring high-current 24V DC distribution to multiple subsystems.

Infrastructure Control Systems: Powers SCADA equipment in water treatment plants, pipeline monitoring stations, and building automation systems where centralized power distribution simplifies maintenance and reduces failure points.

Redundancy Configuration

The SD823 supports redundant power configurations when paired with the SS822 Voting Unit. This diode-OR architecture enables two power supplies to operate in parallel with automatic load sharing and failover protection. If one supply fails, the redundant unit seamlessly assumes full load without interrupting controller operation—critical for applications requiring 99.99% uptime.

Load Balancing: When configured in redundant mode, parallel-connected SD823 units automatically balance load current within ±10% tolerance, maximizing service life and thermal performance. The voting unit monitors individual supply health and isolates failed units while maintaining system power.

Installation & Configuration

The SD823 mounts on standard 35mm DIN rail using spring-loaded clips for tool-free installation and removal. Screw-clamp terminals accept wire gauges from 0.5-2.5mm² (AWG 20-14) with captive pressure plates preventing strand damage during tightening.

Wiring Guidelines:

• Input terminals L, N, and PE (protective earth) connect to facility AC power distribution
• Output terminals +24V and 0V distribute power to controller backplanes via redundant wiring paths
• Voltage selection switch must match local AC supply (115V or 230V) before energizing
• Torque specification: 0.5-0.6 Nm (4.4-5.3 lb-in) for terminal screws
• Minimum wire bend radius: 5× wire diameter to prevent insulation damage

Power Budget Calculation: Each S800 I/O module consumes 50-200mA depending on type and configuration. The SD823's 10A capacity supports approximately 40 standard digital I/O modules or 20 analog modules with transmitter power. For mixed configurations, sum individual module currents and maintain 20% safety margin.

Diagnostic & Status Indication

Front-panel LEDs provide visual confirmation of operational status: green AC OK confirms input power presence, green DC OK verifies output voltage within specification, and red FAULT illuminates during overload, overvoltage, or thermal shutdown conditions. These indicators enable rapid troubleshooting without test equipment during commissioning or maintenance activities.

Remote Monitoring: Optional relay contact outputs (available in extended models) provide dry-contact signals for integration with SCADA alarm systems, enabling predictive maintenance based on power supply health trends and load monitoring.

Maintenance & Service Life

The SD823 features electrolytic capacitors rated for 10,000 hours at maximum operating temperature, translating to 20+ year service life in typical industrial environments with 40°C average ambient. Recommended preventive maintenance includes annual inspection of terminal connections, visual examination for dust accumulation, and verification of output voltage regulation under load.

Mean Time Between Failures (MTBF): Exceeds 300,000 hours at 40°C ambient temperature based on MIL-HDBK-217F reliability prediction standards, ensuring high availability in continuous process operations.

Environmental & Safety Compliance

Designed for harsh industrial environments, the SD823 meets stringent safety and EMC requirements:

• Hazardous Location Approvals: ATEX Zone 2, IECEx, Class 1 Division 2 for installation in areas with potential explosive atmospheres
• EMC Immunity: IEC 61000-4 series testing for ESD, radiated RF, conducted disturbances, and surge transients
• Emissions: EN 55011 Class A limits for industrial environments
• Safety Isolation: 3kV AC input-to-output, 1.5kV AC output-to-ground per IEC 61010-1
• RoHS Compliance: Lead-free construction meeting EU Directive 2011/65/EU

Related Products

Ordering & Availability

The SD823 ships as a complete unit with DIN-rail mounting hardware, terminal block covers, and installation documentation. Extended temperature range variants (-40°C to +70°C) and custom input voltage configurations available through ABB factory orders with 6-8 week lead times.

Why Choose Industrial Control Hub?

We specialize in ABB automation components with factory-direct sourcing, ensuring authentic products with full manufacturer warranty coverage. Every SD823 power supply ships with traceability documentation, test certificates, and installation guides. Our technical support team provides pre-sales application consulting for power budget calculations, redundancy configurations, and system integration troubleshooting.

Stock Availability: Maintained inventory ensures rapid delivery for emergency replacements and planned projects. Same-day shipping available for in-stock items with expedited global logistics.

Warranty & Support: 12-month manufacturer warranty covering defects in materials and workmanship. Technical hotline staffed by ABB-certified engineers for troubleshooting and application assistance.

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