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The SPSO2 (Part Number: SPSO2) is a high-performance surge protective device (SPD) from ABB, specifically designed to safeguard Symphony Plus control systems and sensitive industrial electronics against transient overvoltages. This module protects equipment from atmospheric...
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The SPSO2 (Part Number: SPSO2) is a high-performance surge protective device (SPD) from ABB, specifically designed to safeguard Symphony Plus control systems and sensitive industrial electronics against transient overvoltages. This module protects equipment from atmospheric surges (e.g., lightning) and internal switching transients, preventing costly downtime and hardware damage in critical automation environments.
With a fast response time of <25 ns and high discharge capacity, the SPSO2 ensures that surges are clamped before they reach delicate silicon components. Its compact 36 mm DIN-rail mount housing is ideal for high-density cabinets, providing robust protection without consuming excessive space. Built for harsh industrial environments, the SPSO2 combines reliability, ease of installation, and long-term operational stability.
| Parameter | Specification |
|---|---|
| Model Identification | SPSO2 |
| Nominal Operating Voltage | 230 V AC |
| Maximum Continuous Operating Voltage (MCOV) | 320 V AC |
| Nominal Discharge Current (In, 8/20 μs) | 20 kA |
| Maximum Discharge Current (Imax, 8/20 μs) | 40 kA |
| Voltage Protection Level (Up) | ≤ 1.8 kV |
| Response Time | < 25 ns |
| Short-Circuit Current Rating (SCCR) | 25 kA |
| Environmental Protection | IP20 |
| Operating Temperature | -40°C to +80°C |
| Terminal Capacity | 2.5 mm² to 35 mm² |
| Physical Dimensions (H x W x D) | 90 mm x 36 mm x 65 mm |
| Unit Weight | 1.24 kg |
Rapid Surge Clamping: Sub-25 ns response protects sensitive electronics before damage occurs.
High Discharge Capacity: Handles up to 40 kA for indirect lightning and switching surges.
Compact Design: 36 mm DIN-rail footprint allows dense enclosure installations.
Robust Terminals: Accommodates cable sizes from 2.5 mm² to 35 mm².
Industrial Durability: Wide -40°C to +80°C operating range for harsh environments.
Maintenance-Friendly: IP20, finger-safe design with visual end-of-life indicator.
Power Generation: Protects turbine controllers, governors, and sensor electronics.
Water & Wastewater: Shields PLCs, I/O modules, and instrumentation from voltage spikes.
Heavy Manufacturing: Guards automation cabinets in metal processing, pulp & paper, and chemical plants.
How do I know if the SPSO2 has reached end of life?
The module features a visual status window. A color change (usually green → red) indicates that the internal protection components have been used and the unit must be replaced.
Can the SPSO2 protect against direct lightning strikes?
It is rated for indirect lightning and switching surges up to 40 kA (8/20 μs). For direct strikes, the SPSO2 should be part of a coordinated Type 1 lightning protection system.
Is the module easy to install in crowded cabinets?
Yes. Its 36 mm width (2-module DIN size) and standard screw terminals allow space-efficient, secure installation.
