ABB SD833 100-240V Auto Select Power Supply

ABB SD833 Industrial Power Supply: Reliable 24V DC Power for Critical Systems

The ABB SD833 is a high-performance switch-mode power supply designed for industrial automation. It meets strict safety standards and delivers stable 24V DC power for SELV and PELV applications.

Key Features & Benefits

• Simple DIN-rail mounting for easy installation in control cabinets.
• Class I equipment (requires protective earth connection for safety).
• Over-voltage Category III rating for connection to primary mains TN networks.
• Protective separation between primary and secondary circuits ensures user safety.
• Output protected against overcurrent (current limit) and overvoltage (OVP).
• Soft start feature prevents tripping fuses or earth-fault circuit breakers on power-on.

Technical Specifications

• Brand: ABB
• Model: SD833
• Rated output voltage: 24V DC
• Rated output current: 10A
• Rated output power: 240W
• Input voltage: 100-120V AC / 200-240V AC (auto-select)
• Efficiency: 91% (100-120V AC) / 91.6% (200-240V AC)
• Output ripple (peak to peak): ≤50mV
• Maximum ambient temperature: 55°C
• Protection rating: IP20

Installation & Usage

• Mount the ABB SD833 on standard DIN rails (spacing: 15mm width, 40mm height).
• Use a 10-20A external fuse for the primary circuit to ensure safety.
• For redundant applications, pair with diode voting units SS823 or SS832.
• No mains filter required—reduces installation time and cost.

Environmental & Certification

• CE marked and compliant with IEC 61131-2, UL 508, and EN 50178 standards.
• RoHS compliant (DIRECTIVE/2011/65/EU) and WEEE compliant (DIRECTIVE/2012/19/EU).
• Suitable for non-hazardous locations (not certified for ATEX/IECEx zones).

Packaging & Shipping

• Package includes 1 x ABB SD833 power supply.
• Shipping via FedEx, UPS, or DHL for fast and reliable delivery.

Frequently Asked Questions

• Q: What is the maximum output current of the ABB SD833?
  A: 12A at ambient temperatures below 45°C.
• Q: Does the ABB SD833 support load sharing?
  A: No, load sharing is not available for this model.
• Q: What is the output voltage holdup time during a mains blackout?
  A: 46-47 ms, ensuring uninterrupted power for short outages.

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