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ABB SD831 3BSC610064R1 Power Supply Unit

The ABB SD831 3BSC610064R1, also cataloged as the SD831 Power Supply Unit, operates as a dedicated hardware component for converting mains input voltage into regulated 24 VDC output power within ABB industrial control system power networks.

Hardware Specifications

Parameter	Specification
Model	SD831 3BSC610064R1
Brand	ABB
Weight	430 g
Dimensions	32 mm W x 102 mm D x 124 mm H
Operating Temp	Maximum 55 deg C
Power Consumption	Rated output power 72 W, heat dissipation 10/8 W
Product Type	Power Supply Unit
Rated Output Voltage	24 VDC
Rated Output Current	3 A
Maximum Output Current	3.3 A
Rated Input Power	134/143 VA
Input Voltage Range	100-240 VAC +/-10 %, 110-300 VDC -20 % / +25 %
Mains Frequency	50-60 Hz +/-6 %
Efficiency	88/89.8 %
Output Ripple	< 50 mV peak to peak
Output Voltage Regulation	< 50 mV / < 100 mV at maximum current
Secondary Voltage Holdup Time	29/120 ms during mains blackout
Output Over Voltage Protection	< 39 V
Protection Rating	IP20 according to IEC 60529
Applications	SELV and PELV systems
Electrical Safety Standards	IEC 61131-2, UL 508, EN 50178
EMC Compliance	EN 61000-6-4 and EN 61000-6-2
Mounting Spacing	15 mm W, 40 mm H

ABB Industrial Power Network Characteristics

The ABB SD831 power supply integrates switch-mode conversion technology for industrial control power distribution. The unit accepts both AC and DC mains sources and provides a regulated 24 VDC secondary output for automation hardware.

The power supply supports non-redundant and redundant configurations. For redundant operation, ABB SS823 or SS832 diode voting units provide output selection and current path management between multiple power supply units.

The SD831 includes soft-start functionality. Therefore, power activation limits primary inrush current effects and prevents unnecessary triggering of upstream fuses or earth-fault circuit breakers.

The unit is designed for ABB automation environments requiring controlled DC power distribution, DIN-rail installation, and compatibility with SELV or PELV protection concepts.

Frequently Asked Questions

Q: Can the ABB SD831 operate in redundant power supply configurations?
A: Yes. The SD831 supports redundant applications when combined with ABB SS823 or SS832 diode voting units. These units manage output power selection between parallel supply sources.

Q: Does the SD831 require an external mains filter for operation?
A: No. The SD831 power supply design does not require installation of a mains filter for standard operation.

Q: What safety standards apply to the ABB SD831 power supply?
A: The SD831 complies with IEC 61131-2, UL 508, and EN 50178 electrical safety requirements. The secondary output circuit is accepted for SELV and PELV applications.

Field Installation Guidelines

Install the ABB SD831 on a suitable DIN-rail mounting system with the specified mechanical spacing maintained around the enclosure. Ensure sufficient airflow around the unit to support thermal dissipation.

Connect input wiring according to the approved AC or DC supply range. Verify protective grounding connections before energizing the device.

For redundant configurations, install ABB SS823 or SS832 diode voting units according to the system architecture requirements. Keep power wiring separated from high-frequency switching cables and signal communication lines.

Check output polarity and verify the 24 VDC distribution voltage before connecting downstream automation modules. Follow cabinet grounding and EMC practices defined for ABB industrial control installations.

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