ABB SD831 Power Supply – 24V DC Output, High-Efficiency

The ABB SD831 is a high-performance industrial power supply designed for both SELV and PELV applications. It delivers a stable 24 V DC output, ensuring reliable power for automation and control systems, even in challenging environments.

Key Features

Type: Power Supply
Rated Output Current: 3 A
Rated Output Power: 72 W
Rated Output Voltage: 24 V DC
Rated Input Power: 134/143 VA
Mains/Input Voltage (Nominal): 100-240 V AC / 110-300 V DC
Applications: SELV and PELV
Efficiency: 88% / 89.8%

Technical Specifications

Parameter	Value
Mains Voltage Variation Allowed	100-240 V AC ±10% / 110-300 V DC -20% / +25%
Mains Frequency	50-60 Hz ±6%
Primary Peak Inrush Current at Power On	<28 A (AC) / <54 A (DC)
Power Factor (at Rated Output Power)	0.61 / 0.56
Heat Dissipation	10 W (AC) / 8 W (DC)
Output Voltage Regulation at Max Current	<50 mV / <100 mV
Ripple (Peak-to-Peak)	<50 mV
Secondary Voltage Holdup Time	29 ms / 120 ms
Maximum Output Current	3.3 A
Maximum Ambient Temperature	55°C
Recommended External Fuse (Primary)	10-20 A
Short Circuit Protection (Secondary)	4-8 A

Dimensions and Weight

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Applications and Use Cases

The ABB SD831 is ideal for a wide range of industrial applications where reliable and stable power is crucial. It is particularly suited for systems operating under SELV (Safety Extra Low Voltage) and PELV (Protective Extra Low Voltage) standards. The robust design ensures stable and efficient power delivery to automation and control systems in demanding environments.