WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
The ABB SS832 is a power voting unit designed for use in redundant power supply systems within industrial automation and process control environments. It plays a critical role in ensuring continuity and reliability of power delivery by separating and supervising multiple redundant power supply inputs, then selecting and delivering the best available power source to connected loads. This capability is crucial in applications where uninterrupted power is essential, such as in control systems, telecommunications, and critical infrastructure.
The ABB SS832 interfaces with two separate 24 V DC power supply sources, managing currents up to 10 A per supply and supporting parallel operation for load sharing up to 20 A. Its voting logic rapidly selects the operational supply that meets voltage and current criteria while providing supervision signals that inform connected equipment of power status. Front-panel green LEDs offer instantaneous visual feedback, showing which power supply output is active and functioning correctly. The unit also features voltage-free relay contacts for connection to status monitoring and alarm systems.
In terms of design and functionality, the SS832 is simple to install with DIN-rail mounting in control cabinets. It provides a protective separation between primary and secondary circuits, complies with Class I electrical equipment standards when grounded, and is rated for over-voltage category III environments typical of industrial TN main power networks. The unit is ruggedized with IP20 protection, supports SELV and PELV safety extra-low voltage applications, and incorporates current limit and over-voltage protection to safeguard connected devices.
- SS832
- SS832
Key Technical Specifications:
| Parameter | Value |
|---|---|
| Model | ABB SS832 |
| Brand | ABB |
| Product Type | Power Voting Unit |
| Input Voltage | 2 x 24 V DC |
| Rated Input Current | 2 x 10 A (20 A in parallel) |
| Output Current | 10 A (25 A overload capability) |
| Voltage Regulation | Approximately 0.85 V at max current |
| Supervision Relay | Yes, voltage-free contacts |
| Operating Temperature | 0°C to 55°C |
| Mounting | DIN rail |
| Protection Rating | IP20 (IEC 60529) |
| Certification | CE, IEC 61131-2, UL 508, EN 50178 |
| Weight | Approximately 350 grams |
| Dimensions (WxHxD) | 32 mm x 125 mm x 117 mm |
| Power Dissipation | About 18 W |
The ABB SS832 is commonly deployed alongside other power supply units (such as the SS823) in systems requiring fault tolerance and power redundancy. Its voting capabilities ensure that critical systems remain powered without interruption, with automatic switching between power inputs in the event of a failure.
For installation, ensure the unit is mounted with adequate clearance for ventilation and easily accessible for monitoring LED indications. Proper grounding is essential to meet electrical safety and interference immunity standards. Regular maintenance includes visual inspection of LED status and testing of supervision relay contacts to verify correct operation.
