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Unmanaged 5-Port Industrial Ethernet Switch – 4x 10/100 Mbps RJ45 ports + 1x 100FX single-mode ST fiber – IP30 metal housing – DIN-rail/wall mounting – Extended wide -40°C to +75°C operation
Who We Are
Impulse Embedded is a leading provider of Industrial computing systems and solutions. Our customers rely on us to provide the best embedded computing products and solutions for the challenges presented by today’s industrial demands. Together with our global manufacturing partners we provide world-class innovative embedded computing and automation products and solutions suitable for multiple industrial market sectors.
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The Advantech EKI-2525SI-ST-AE is an unmanaged industrial Ethernet switch designed for long-distance fiber communication in harsh environments. It provides four 10/100 Mbps RJ45 copper ports and one 100FX single-mode ST fiber port, allowing data transmission over distances up to 30 km. By leveraging fiber-optic connectivity, it delivers noise immunity and stable bandwidth for industrial backbones.
Built with durability in mind, the EKI-2525SI-ST-AE comes in an IP30-rated metal housing and offers versatile DIN-rail and wall-mounting options. Its extended wide operating temperature range of -40°C to +75°C ensures reliable operation in extreme conditions, from outdoor enclosures to high-vibration factory floors.
Redundant dual 12–48 VDC power inputs strengthen network uptime, while protections against reverse polarity and overload currents prevent system damage. A built-in relay output enables fault notification in the event of a power failure or disconnection, providing maintenance teams with immediate alerts.
The switch supports broadcast storm protection and auto MDI/MDI-X, simplifying installation and reducing cabling complexity. Combined with store-and-forward switching and industrial-grade EMC compliance, the EKI-2525SI-ST-AE offers secure and efficient Ethernet extension for applications in transport, utilities, and critical infrastructure.
Delivery & Returns
We offer a range of delivery options to suit your needs.
UK Mainland
Northern Ireland & Highlands
Ireland
RMA
In order to process returned goods, Impulse Embedded Limited uses an internal RMA system. Before returning goods for any reason, please contact Impulse Embedded Limited (returns@impulse-embedded.co.uk) to request an RMA number. Please confirm the reason for the return of the goods, providing the Serial Number, Product Code, and Impulse Embedded Limited Invoice Number (if known).
When returning goods, please ensure they are suitably packed so as to avoid damage, are in the original packaging, along with all accessories, with the outer packaging marked with the RMA number. It is recommended that you use a signed delivery service, as goods lost in transit are not the responsibility of Impulse Embedded Limited.
Please do not write the RMA number on the goods or on the original packaging. Impulse Embedded Limited may refuse returned goods and return them if they arrive without an RMA number, or not in the original packaging.
Advantech 5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Single-Mode ST Fibre – Extended Wide Temperature Operation
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EKI-2525SI-ST-AE
5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Single-Mode ST Fibre – Extended Wide Temperature Operation
Our customer required a small form factor single board computer with wide temperature components and an industrial mSATA SSD for integration into their new substation monitoring product.