Name: SS823 ABB Voting Unit | SIL3 Redundant Power Voter 3BSE038226R1 20A
SKU: SS823
Availability: InStock

Product details

🔌 Product highlights

The ABB SS823 Voting Unit (article 3BSE038226R1) manages redundant power supply configurations. It connects two 24 V power units, supervises output voltage, and provides OK signals. Features double overvoltage protection, SIL3 certified, and G3 corrosion resistance. Ideal for AC 800M High Integrity systems.

Need expert help? sales@powergearx.com or WhatsApp +86 18030005825.

🧩 Model identity – SS823

ABB SS823 – Voting Unit / Overvoltage Protection · article 3BSE038226R1
⤷ For redundant 24 V d.c. power supply configurations
⤷ Connects two power units · supervises voltage
⤷ Double overvoltage protection on both inputs
⤷ Green LEDs for visual OK indication
⤷ Voltage-free OK contacts per channel
⤷ Detects short/open circuits in voting element

⚙️ Core technical data

Electrical ratings
➜ Rated output current 20 A · max 35 A overload
➜ Rated input power 500 W · input voltage 1×24 V d.c.
Protection & supervision
➜ Output overvoltage trip < 30 V · current limit
➜ Heat dissipation 24 W @ 20 A / 6 W @ 5 A
Temperature range
➜ Max ambient 55°C · Class I equipment (earth protected)
Protection & environment
➜ IP20 · pollution degree 2 · corrosion class G3
➜ Overvoltage category III · SELV/PELV compliant
Dimensions & weight
➜ Width 116 mm · Depth 145 mm · Height 132 mm
➜ Weight 0.87 kg (1.9 lb)

✅ Certifications at a glance

Safety & functional
SIL3 certified per IEC 61508 · ATEX Zone 2 · EN 50178 · IEC 61131-2
Marine
ABS, BV, DNV-GL, LR — full approval
Environment
IP20 · CE · RoHS · WEEE · EN 61000-6-2/4

📦 Delivery & warranty

Warranty
12 months against defects · full parts & labor
Shipping
FedEx, UPS, DHL · fast global delivery · tracking included
In the box
1x SS823 voting unit · mounting instructions · DIN rail clip

🏭 Typical applications

Industries
Oil & gas · chemical · power generation · marine · process safety
Best use
Redundant power for AC 800M High Integrity · S880 I/O systems · SIL3 power distribution

❓ Professional FAQ (real‑world advice)

Q: What is the main purpose of SS823?
A: SS823 connects two redundant 24 V power supplies, votes between them, and provides a single protected output. It supervises voltage, gives OK signals, and protects against overvoltage and short circuits.
Q: Can SS823 be used for SIL3 applications?
A: Yes, SS823 is certified for SIL3 according to IEC 61508. It’s designed for AC 800M High Integrity and S880 I/O systems requiring high-integrity power.
Q: How do I know if the output is OK?
A: Green LEDs on the front panel light when voltage is correct. Simultaneously, a voltage-free contact closes for remote monitoring. Trip levels are factory preset.
Q: What happens if one power supply fails?
A: The SS823 automatically switches to the good supply. The corresponding OK contact opens to indicate failure. The other LED stays green, and output continues without interruption.
Q: Is SS823 approved for marine use?
A: Yes, it carries ABS, BV, DNV-GL, and LR certifications. Also G3 compliant for corrosive environments. Suitable for offshore and shipboard installations.