Description
The SEL-3355 is a high-performance, fanless industrial computer designed specifically for the most demanding utility and industrial environments. Unlike standard commercial off-the-shelf (COTS) PCs, the SEL-3355 is built to operate reliably in high-EMI, high-vibration, and extreme temperature conditions commonly found in electrical substations and industrial control rooms. It serves as a robust platform for local data logging, Human-Machine Interface (HMI) hosting, and advanced communication applications.

Technical Specifications ⚙️
| Feature | Specification |
|---|---|
| Product Type | Rugged Industrial Computer (Rackmount) |
| Manufacturer | Schweitzer Engineering Laboratories (SEL) |
| Processor | High-performance multi-core Intel processors |
| Cooling | Passive (Fanless design) for maximum reliability |
| Operating Temp | -40°C to +75°C (-40°F to +167°F) |
| Reliability | IEEE 1613 Class 2 and IEC 61850-3 compliant |
| Storage | Dual removable solid-state drives (SSDs) |
| Expansion | PCI/PCIe slots for network and I/O expansion |
| Power Supply | Dual-redundant, wide-range DC/AC power supplies |
| Construction | Steel chassis, sealed for environmental protection |
Key Applications & Benefits 🚀
- Substation Automation: Acts as a centralized data collector for Intelligent Electronic Devices (IEDs).
- HMI Host: Provides a stable platform for visualization software in remote control environments.
- Cybersecurity Gateway: Often used to host firewalls, data diodes, or security monitoring software at the network edge.
- Maintenance: The fanless, cableless design significantly reduces the mean time between failures (MTBF), eliminating the need for periodic dust cleaning and internal fan replacement.
Recommended SEL Support Components 📦
To optimize your SEL-3355 installation within a control cabinet or substation rack, consider these related products:
- SEL-2440 (DPP – Discrete Programmable I/O)
- SEL-2924 (Managed Ethernet Switch)
- SEL-2800 (Fiber Optic Transceivers)
- SEL-3620 (Ethernet Security Gateway)
- SEL-C298 (High-speed fiber optic cables for network backbone)
- SEL-C930 (I/O expansion cables)
- SEL-9321 (External serial interface modules)
- Rackmount Mounting Kits (Specifically designed for deep-rack stability)

