ABB SD821 3BSC610037R1 Industrial Switch-Mode Power Supply

Description

The ABB SD821 (3BSC610037R1) is a high-performance switch-mode power supply for System 800xA and other industrial automation systems. It converts a wide AC input range to a stable 24V DC output for controllers, I/O modules, and field devices. With built-in support for parallel and redundant operation, it ensures reliable power delivery in demanding industrial environments.

Specifications

• Manufacturer: ABB

• Model Number: SD821

• Order Number: 3BSC610037R1

• Product Type: Power Supply Device

• Input Voltage: 100–240V AC (Nominal)

• Output Voltage: 24V DC

• Output Current: 5A

• Power Rating: 120W

• Mounting: 35mm DIN Rail

• Efficiency: >89% at full load

• Operating Temperature: -25 to +70°C

Features

• Stabilized Power Delivery: Provides a clean and regulated 24V DC output to protect sensitive electronic components from upstream line noise.

• Redundancy Capability: Engineered to support N+1 redundancy configurations, ensuring critical process continuity in the event of a single unit failure.

• Comprehensive Protection: Features integrated electronic safeguards against short circuits, continuous overloading, and overvoltage conditions.

• Industrial Thermal Management: Utilizes efficient convection cooling to operate across a wide temperature spectrum without the need for internal fans.

• Mains Failure Buffering: Includes internal buffering to bridge momentary power dips, preventing unnecessary system resets during minor grid instability.

• DIN Rail Integration: Features a compact, rugged housing that snaps securely onto standard rails, optimizing cabinet space and reducing installation time.