ABB SB822 3BSE018172R1 S800 I/O System 24V DC Power Supply Module

High-Reliability Power Solution for ABB Distributed Control Systems (DCS)

Product ID: SB822

Order Code: 3BSE018172R1

Brand: ABB

Product Family: S800 I/O

Type: Power Supply Module / S800 I/O Power Unit

Product Overview

The ABB SB822 (3BSE018172R1) is a dedicated 24V DC power supply module specifically engineered for the ABB S800 I/O system and AC 800M controller platforms. As the "power heart" of the I/O station, it converts fluctuating industrial AC mains into a stable, clean DC voltage required by critical I/O modules, communication adapters, and field devices.

Designed for high availability, the SB822 supports N+1 parallel redundancy, making it an essential component for mission-critical Distributed Control Systems (DCS) and Programmable Logic Controller (PLC) applications where system uptime is non-negotiable .

Key Features & SEO Keywords

N+1 Redundancy Support: Allows parallel operation of multiple units. If one module fails, others seamlessly take over the load without interrupting the 24V DC output to the I/O rack.

Wide-Range Input: Accepts 85 to 264 V AC (auto-ranging) or 110 to 300 V DC, ensuring stable operation even during severe voltage sags or brownouts.

High Efficiency: >85% typical efficiency reduces heat dissipation and improves longevity in control cabinets.

Comprehensive Diagnostics: Features "Power Good" (PWR OK) status signals and LED indicators (AC OK / DC OK) for real-time health monitoring and predictive maintenance.

Robust & Compact: IP20 protection rating, designed for harsh industrial environments with wide temperature tolerances.

Hot-Swappable: In redundant configurations, modules can be replaced online without shutting down the control system.

Technical Specifications (Datasheet)

Specification Value

Manufacturer ABB

Model Number SB822 (3BSE018172R1)

Output Voltage 24 V DC

Output Power 40 W

Input Voltage 85...264 V AC (47...63 Hz) / 110...300 V DC

Efficiency Typ. >85%

Overload Protection Yes (Automatic current limiting)

Parallel Connection Yes (Redundant operation)

Operating Temperature 0 °C to +60 °C

Storage Temperature -40 °C to +85 °C

Mounting S800 I/O Base Plate (Insertable)

Certifications CE, UL, cULus, ATEX/IECEx (Hazardous locations)

*Note: The ABB SB822 is often confused with battery backup units. The 3BSE018172R1 variant is the AC/DC Power Supply for S800 I/O, not a battery unit .*

Applications & Use Cases

The ABB SB822 is widely used in industries requiring high process availability:

Process Automation: Oil & Gas, Chemical, Petrochemical (DCS systems like ABB 800xA).

Power Generation: Power plant DCS remote I/O cabinets (Fossil fuel & Nuclear).

Water & Wastewater: SCADA system RTU cabinets.

Manufacturing: Automotive assembly lines and material handling systems.

Critical Infrastructure: Tunnel ventilation control and airport baggage handling.

Why Choose the ABB SB822?

If you are building or maintaining an ABB S800 I/O station, the SB822 is the correct primary power supply unit. Unlike generic industrial power supplies, the SB822 is designed to interface directly with the S800 backplane, providing diagnostic data to the ABB controller and physically fitting the specific form factor of the I/O rack.

*ABB power supply, 3BSE018172R1 datasheet, S800 I/O power, Redundant power module, ABB DCS spares, 24VDC 40W.*