A 3A version of the same series, suitable for small cabinet applications or low-power remote I/O drops.

The ABB SD834 is a high-performance 24V DC switch-mode power supply module designed specifically for demanding industrial automation and process control systems. As part of ABB’s renowned SD83x series, this unit delivers a robust 20A rated output (480W), making it an ideal power source for large PLC racks, distributed I/O stations, and sensor/actuator networks. The ABB SD834 features a universal input range (85-276V AC/88-187V DC), allowing it to operate reliably in diverse electrical environments without the need for external taps or switches. It is engineered for both standard and safety-critical applications, complying with SELV/PELV standards and featuring comprehensive protection mechanisms including overcurrent, overvoltage, and short-circuit hiccup mode. With support for parallel operation and redundancy configurations (when used with ABB voting units), the ABB SD834 provides a flexible and resilient power foundation for continuous industrial operations.

Category: FUJI

Contact Us WhatsApp / Wechat：+8618150087953
Phone：+86 18150087953
Email：sales@cxplcmro.com

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	SD834
Manufacturer	ABB
Product Type	Industrial Switch-Mode Power Supply (PSU)
Article Number	3BSC610067R1
Rated Output Voltage	24 V DC
Rated Output Current	20 A
Rated Output Power	480 W
Maximum Output Current	30 A (for ≤ 4 seconds)
Input Voltage Range	85-276 V AC / 88-187 V DC
Input Frequency	50/60 Hz ±6%
Efficiency	Up to 93.9%
Ripple & Noise	< 100 mV (peak-to-peak)
Hold-up Time (typical)	100 ms (at 230V, 10A load)
Operating Temperature	0°C to +55°C (derating above +40°C)
Dimensions (W x H x D)	82 mm x 124 mm x 127 mm
Weight	1.2 kg
Mounting	DIN Rail (35 mm)
Protection Class	IP20
Certifications	UL 508, cULus Listed (Class 1 Div 2), CE, RoHS

Main Features and Advantages

High power density and universal input: The ABB SD834 packs 480W of clean power into a compact DIN-rail form factor, eliminating the need for bulky external transformers. Its wide input voltage range (85-276V AC) ensures stable operation even in areas with significant line voltage fluctuations, making it suitable for global deployment without hardware modifications.Advanced protection and monitoring: Engineered for reliability, the module features a “hiccup mode” short-circuit protection that automatically attempts recovery, preventing damage from persistent faults. It includes a floating “DC-OK” relay contact for remote monitoring of power status, enabling seamless integration into plant-wide health monitoring systems. The built-in soft-start circuitry limits inrush current to less than 13A, protecting upstream fuses and contactors.Redundancy and parallel capability: Unlike smaller models in the series, the ABB SD834 supports parallel connection (with external diodes) to increase available current or create N+1 redundant power systems. This is critical for high-availability applications in process industries where power loss to a control system is not an option. When used with ABB’s SS823 or SS832 voting modules, it forms a fault-tolerant power bus.Industrial hardening: Designed to meet stringent industrial standards including UL 508and EN 61131-2, the ABB SD834 is built to withstand the electrical noise, vibration, and corrosive atmospheres (ISA-S71.04 G2) commonly found in industrial control panels. Its high efficiency (up to 93.9%) minimizes heat dissipation, extending component life and reducing cooling requirements.