ABB SD831 3BSC610064R1 Power Supply Unit | S800 I/O Series 24V 3A Module

Global PLC Spare HUB Insight

Industrial control architectures demand robust power distribution that withstands transient harmonics and grid fluctuations without tripping protective breakers. The ABB SD831 (3BSC610064R1) switch-mode power supply solves this by incorporating an efficient soft-start mechanism and wide AC/DC input tolerances. Based on field observations in high-density DCS cabinets, pairing this unit with diode voting modules like SS823 or SS832 establishes a dependable redundant architecture that eliminates single points of failure in continuous process control loops.

Product Overview

The ABB SD831 (3BSC610064R1) is a high-performance switch-mode power supply unit engineered for industrial automation environments. Part of the ABB S800 I/O series, this module converts variable mains voltage into a stable, regulated 24 V DC output suitable for sensitive control electronics. It complies with strict international safety directives and provides reliable power management for both non-redundant and redundant configurations.

Technical Specifications

• Brand: ABB
• Series / Model: S800 I/O / SD831
• Part Number / Article ID: 3BSC610064R1
• Rated Output Voltage: 24 V d.c.
• Rated Output Current: 3 A (Maximum output current: 3.3 A)
• Rated Output Power: 72 W
• Nominal Input Voltage: 100-240 V a.c. / 110-300 V d.c.
• Mains Voltage Variation Allowed: 100-240 V a.c. (±10%), 110-300 V d.c. (-20% / +25%)
• Mains Frequency: 50-60 Hz (±6%)
• Efficiency: Up to 88% / 89.8%
• Primary Peak Inrush Current: <28 / <54 A
• Power Factor: 0.61 / 0.56 at rated output power
• Output Voltage Regulation: < 50 mV (at max current)
• Ripple (Peak to Peak): < 50 mV
• Secondary Voltage Holdup Time: 29 / 120 ms at mains blackout
• Heat Dissipation: 10 / 8 W
• Over-Voltage Protection (OVP): < 39 V

Installation & Operating Guidelines

• Mounting Type: Simple DIN-rail mounting requiring no external mains filter due to built-in soft-start features.
• Mounting Spacing: Width clearance of 15 mm (0.59"); Height clearance of 40 mm (1.57").
• External Fuses: Primary recommended external fuse is 10-20 A; Secondary short-circuit protection is 4-8 A.
• Dimensions: Width 32 mm (1.26"), Depth 102 mm (4.02"), Height 124 mm (4.88").
• Weight: 430 g (0.9 lbs.)

Environmental Tolerance & Certifications

• Electrical Safety Standards: IEC 61131-2, UL 508, EN 50178
• Protection Rating: IP20 according to IEC 60529
• Corrosive Atmosphere Resistance: ISA-S71.04 G2 compliance
• Pollution Degree: Degree 2, IEC 60664-1
• EMC Compliance: EN 61000-6-4 and EN 61000-6-2
• Overvoltage Category: Over-voltage Category III (IEC/EN 60664-1)
• Equipment Class: Class 1 according to EN 50718 (when connected to Protective Earth, PE)
• Marine Approvals: ABS, BV, DNV-GL, LR
• Environmental Compliance: RoHS compliant (2011/65/EU) and WEEE compliant (2012/19/EU)
• Maximum Ambient Temperature: 55 °C

Compatibility & Redundancy

• Compatible Systems: Integrates natively within ABB S800 I/O architectures and industrial control networks.
• Redundancy Setup: For redundant applications, utilize the unit alongside SS823 or SS832 diode voting units.
• Circuit Application: Secondary output circuitry is fully accepted for SELV or PELV applications.

Logistics, Warranty & Package Contents

• Package Contents: 1 x ABB SD831 Power Supply Unit, user technical sheet.
• Quality & Warranty: Backed by a comprehensive 12-month warranty covering manufacturing defects.
• Fulfillment & Shipping: Express dispatch within 24-48 hours utilizing trusted global carriers including FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

Question: Can the SD831 power supply be used in dual-redundant power configurations?

Answer: Yes, but redundant setups require connecting the units through compatible diode voting units such as the SS823 or SS832 to isolate power rails properly.

Question: Is an external mains filter required during installation?

Answer: No external mains filter is needed. The unit features an integrated soft-start design that prevents power-on tripping of fuses or earth-fault circuit breakers.

Question: What should I check first if the module experiences sudden output voltage shutdown on site?

Answer: Verify that the ambient temperature remains below 55 °C and check whether secondary short-circuit limits (4-8 A) or internal over-voltage protection (<39 V) have engaged due to transient load spikes.

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