ABB SD834 Switch Mode Power Supply 100-240V AC DC Input

ABB SD834 High-Power Industrial Power Supply: Stable 24V DC for Demanding Systems

The ABB SD834 is a robust switch-mode power supply built for industrial applications. It meets strict safety standards and offers flexible AC/DC input options for diverse setups.

Key Features & Benefits

• Simple DIN-rail mounting lets you install it quickly in control cabinets.
• Class I equipment requires a protective earth connection for safe operation.
• Over-voltage Category III rating works with primary mains TN networks.
• Protective separation between primary and secondary circuits ensures user safety.
• Output has overcurrent (current limit) and overvoltage (OVP) protection.
• Soft start feature prevents fuse or earth-fault circuit breaker trips on power-on.
• Parallel connection capability lets you boost output power as needed.
• Floating DC-OK relay contact monitors power status for critical systems.

Technical Specifications

• Brand: ABB
• Model: SD834
• Rated output voltage: 24V DC
• Rated output current: 20A
• Rated output power: 480W
• Input voltage: 100-240V AC / 110-150V DC
• Efficiency: 92.4% (AC) / 93.9% (DC) for energy savings.
• Output ripple (peak to peak): ≤100mV for stable power delivery.
• Maximum ambient temperature: 55°C for harsh environments.
• Protection rating: IP20 to shield against dust and small objects.

Installation & Usage

• Mount the ABB SD834 on standard DIN rails with 15mm width spacing.
• Use a 10-20A external fuse for the primary circuit to ensure safety.
• For redundant applications, pair it with diode voting units SS823 or SS832.
• No mains filter needed—cuts down installation time and extra costs.
• Parallel connection supports load sharing to increase total output power.

Environmental & Certification

• CE marked and compliant with IEC 61131-2, UL 508, and EN 50178 standards.
• Class 1 Div 2 hazardous location certification suits risky industrial areas.
• RoHS and WEEE compliant to meet global environmental regulations.
• Marine certifications (ABS, BV, DNV-GL, LR) work for maritime applications.

Packaging & Shipping

• Package includes 1 x ABB SD834 power supply unit.
• Shipping via FedEx, UPS, or DHL for fast and reliable global delivery.

Frequently Asked Questions

• Q: What is the maximum output current of the ABB SD834?
  A: It can reach 30A for less than 4 seconds at ambient temps below 45°C.
• Q: Does the ABB SD834 support load sharing?
  A: Yes, you can connect multiple units in parallel for load sharing.
• Q: What input voltages does the ABB SD834 accept?
  A: It works with 100-240V AC and 110-150V DC inputs.

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