Configured for SELV and PELV control power distribution in S800 I/O architectures, the ABB SD853 3BSE088188R1 (SD853 3BSE088188R1 Power Supply Unit) provides direct physical/electrical execution.

Topology & Power Architecture

• Input Characteristics: Accepts single-phase universal supply ranges of 100 to 240 VAC (50 to 60 Hz +/- 6%) or 110 to 150 VDC.
• Output Capabilities: Delivers a regulated 24 VDC output (adjustable from 24 to 28 VDC) rated at 10 A continuous output current (240 W total power) with 20% output power reserves.
• Conversion Efficiency: Features active Power Factor Correction (PFC) yielding an efficiency of 93.6% at 120 VAC and 95.2% at 230 VAC input loads.

Technical Specifications

System Execution & Network Reliability

The primary conversion stage maintains tight bus stability through low output ripple regulation under varying dynamic system load shifts. Integrated electronic inrush current suppression prevents nuisance upstream tripping during initial energized boot states. Hardware flash compatibility across connected automation nodes remains fully sustained via uniform 24 VDC delivery, ensuring uninterrupted backplane bus communication velocity Licences across expansion racks.

Standard Package Manifest

• 1 x ABB SD853 3BSE088188R1 Power Supply Module
• 1 x Installation and Safety Instruction Leaflet

Field Mounting & Wiring Directives

• DIN-Rail Assembly: Secure the compact 39 mm housing onto standard 35 mm DIN rails, ensuring vertical airflow clearance for passive thermal convection.
• Primary Source Wiring: Connect the single-phase AC or DC input power through an external 10 to 20 A protective fuse onto primary screw terminals.
• Parallel Balancing: Connect multiple SD853 units in parallel configuration to activate passive current sharing for redundant power topologies.
• Status Monitoring: Wire the internal dry-contact DC-OK relay output back to supervisory PLC or DCS digital inputs for real-time voltage monitoring.

Technical Questions & Answers

• What primary input voltage ranges are supported by this power supply unit?

  The module accepts broad single-phase inputs ranging from 100 to 240 VAC (50 to 60 Hz) or 110 to 150 VDC.

• What are the nominal output voltage and current capacities of the SD853?

  The unit provides a nominal 24 VDC output (adjustable 24 to 28 VDC) rated at 10 A continuous current and 240 W output power.

• What hazardous location compliance ratings does this hardware hold?

  The module is certified for installation in hazardous areas under Class I Div 2, IECEx Zone 2, and ATEX Zone 2 standard specifications.

• How does the unit facilitate parallel operation for redundant configurations?

  Built-in load sharing features allow parallel connection of multiple units to balance system output currents in redundant setups.

• What type of local status supervision is built into the module hardware?

  An integrated DC-OK relay contact provides isolated physical switching for remote PLC monitoring of 24 VDC output health.

• What is the thermal power loss generated under nominal operating loads?

  Internal heat dissipation is limited to 16.4 W at 120 VAC input and drops down to 12.1 W when operating at 230 VAC input.

• What primary circuit protection is recommended prior to energizing the unit?

  An external primary fuse rated between 10 A and 20 A must be installed on the supply input lines for line protection.

• How does the power supply handle transient high-current overloads?

  The unit incorporates a 20% output power reserve and high overload peak capabilities designed to break downstream branch circuit fuses cleanly.