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ABB SD821 power supply unit
Item NO.:
SD821Payment:
T/TPrice:
$300Product Origin:
SwedenColor:
NEWProduct weight:
0.44KGLead Time:
In stockWe will arrange delivery within 3-5 days after receiving the payment.
Our express delivery: DHL and FedEx.
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Destination country all taxes & duty to be paid by buyer
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The ABB SD821 is a 24V DC industrial power supply unit designed for redundant and non-redundant configurations in automation systems. It belongs to ABB's SD82X series and is commonly used with SS822 power voting units for reliable power distribution in critical applications .
Key features include:
Dual-input voltage selection (115V/230V AC via dip switch)
Regulated 24V DC output with low noise
Soft-start function to prevent inrush current tripping
DIN rail mounting for easy installation in control panels
| Parameter | Specification |
|---|---|
| Model Number | SD821 |
| Input Voltage | 115V/230V AC (selectable) |
| Output Voltage | 24V DC (regulated) |
| Output Current | Up to 20A (depends on configuration) |
| Mounting | DIN rail |
| Protection Features | Overload/short-circuit protection |
| Indicators | Green LED for output status |
| Compatibility | Works with SS822 voting unit for redundancy |
✅ Redundancy Support
Can be paired with SS822 for dual-power backup systems .
✅ Industrial-Grade Reliability
Surge current limiting prevents tripping during power disturbances .
✅ Flexible Installation
Compact DIN rail design saves panel space.
Typical Applications:
DCS/PLC systems (e.g., ABB AC 800M)
Motor control cabinets
Process automation in oil & gas, power plants
The structure and details of the product：
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