Product Overview
The ABB SD833 Industrial Automation Module is a switch-mode power supply unit engineered for demanding industrial control systems. Converts mains voltage to a regulated 24 V DC output, meeting the electrical safety requirements of EN 50178, EN 61131-2, and UL 508. Its secondary output circuitry is accepted for SELV and PELV applications, making it suitable for powering PLCs, DCS systems, drives, and sensors.
The ABB SD833 supports both non-redundant and redundant configurations. For redundant setups, pair it with diode voting units SS823 or SS832. It features a soft-start function, so power-on does not trip fuses or earth-fault circuit breakers. No external mains filter is required, simplifying installation.
Key Features & Benefits
- Simple DIN-rail mounting saves panel space.
- Class I equipment when connected to Protective Earth (PE).
- Over-voltage Category III for primary mains connection (TN network).
- Protective separation between secondary and primary circuits.
- Accepted for SELV and PELV applications.
- Output protected against overcurrent (current limit) and overvoltage (OVP).
Technical Specifications
| Parameter |
Value |
| Article Number |
3BSC610066R1 |
| Type |
Power supply |
| Rated Output Current |
10 A |
| Rated Output Power |
240 W |
| Rated Output Voltage (DC) |
24 V |
| Rated Input Power |
447/514 VA |
| Mains/Input Voltage (Nominal) |
100-120 V AC / 200-240 V AC (auto-select) |
| Efficiency |
91/91.6% |
| Mains Voltage Variation Allowed |
100-120 V AC ±10%, 200-240 V AC ±10% |
| Mains Frequency |
50-60 Hz ±6% |
| Primary Peak Inrush Current |
<10 A |
| Output Voltage Regulation (at max. current) |
<70 mV / <100 mV |
| Ripple (peak-to-peak) |
<50 mV |
| Secondary Voltage Holdup Time |
46/47 ms |
| Maximum Output Current |
12 A (at ambient temp <45 °C) |
| Maximum Ambient Temperature |
55 °C |
| Recommended External Fuse (Primary) |
10-20 A |
| Short-Circuit Current (Secondary) |
14-18 A |
| Output Overvoltage Protection |
<39 V |
| Heat Dissipation |
24/22 W |
| Power Factor (at rated output) |
0.59/0.51 |
| Load Sharing |
— |
| Supervision Relay |
No |
Industry Applications
The ABB SD833 is ideal for powering control panels in manufacturing, process automation, and material handling. Its SELV/PELV approval makes it safe for powering sensors, actuators, and logic controllers in machine safety circuits. In redundant configurations, it ensures uninterrupted power for critical DCS and PLC systems, minimizing downtime. The built-in soft start prevents nuisance tripping, which is essential in facilities with sensitive earth-leakage protection.
Installation & Setup
Mount the ABB SD833 on a standard 35 mm DIN rail. Ensure adequate ventilation and maintain the recommended spacing: 15 mm (0.59") on the sides and 40 mm (1.57") above and below. Connect the primary mains to the input terminals and the 24 V DC output to your load. For redundant operation, install diode voting units SS823 or SS832 as per the system design. No external mains filter is required, but always follow local electrical codes.
Maintenance & Reliability
Periodically inspect the unit for dust accumulation and ensure air vents remain clear. Check that all terminal connections remain tight. The ABB SD833 is designed for long service life with overcurrent and overvoltage protection. Its IP20 rating requires installation in a protected enclosure. With an efficiency of up to 91.6%, it minimizes heat generation, reducing thermal stress and extending component life.
Compatibility & Integration
This power supply works with any 24 V DC load within its current rating. It integrates seamlessly into ABB and third-party control systems. For redundant applications, use the SS823 or SS832 diode voting units. The SD833 is compatible with standard DIN-rail mounting and accepts universal input voltage, making it suitable for global installations.
Selection Guide & Purchasing Advice
Before ordering, verify your input voltage range and required output current. For loads exceeding 10 A, consider the maximum output of 12 A at ambient temperatures below 45 °C. For redundant systems, remember to order the diode voting units. PLC Source PRO offers genuine ABB SD833 modules with fast shipping and technical support. Ensure your application meets the environmental conditions specified, such as pollution degree 2 and corrosive atmosphere class G2.