Please note that we will be closed for the holiday period starting from 24th December, and will reopen on 2nd January 2026. Our last shipping dates to customers this year will be - UK Mainland: 22/12/2025. Highlands/2-day carriage: 18/12/2025. FedEx Priority: 16/12/2025. FedEx Economy: 15/12/2025.
Advantech 5 Port Unmanaged Industrial Ethernet Switch in No Colour
Advantech 5 Port Unmanaged Industrial Ethernet Switch in No Colour

EKI-2525SI Series - Advantech 5 Port Unmanaged Industrial Ethernet Switch

From £250.00 (exc. VAT)

Unmanaged 5-Port Industrial Ethernet Switch – 4x 10/100 Mbps RJ45 ports + 1x 100FX single-mode fiber – IP30 metal housing – DIN-rail/wall mounting – Extended wide -40°C to +75°C operation

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View All Unmanaged Industrial Ethernet Switches

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 is an unmanaged industrial Ethernet switch that brings reliable fiber-optic communication to demanding industrial environments. Featuring four 10/100 Mbps RJ45 copper ports and one 100FX single-mode fiber port, the switch supports data transmission over distances up to 30 km. This makes it ideal for remote connectivity, long-distance communication, and EMI-resistant backbone links in transportation, energy, and factory automation networks.

Engineered for industrial performance, the EKI-2525SI is housed in an IP30-rated metal enclosure and supports both DIN-rail and wall mounting. Its rugged design ensures durability in harsh conditions, with an extended wide operating temperature range from -40°C to +75°C for deployment in outdoor or unconditioned locations.

Redundant 12–48 VDC dual power inputs safeguard against power supply failures, while reverse polarity and overload current protection further enhance resilience. Built-in features such as broadcast storm protection, flow control, and auto MDI/MDI-X simplify installation and deliver stable network operation.

With a long MTBF rating and compliance with CE, FCC, and EN 61000 industrial EMC standards, the EKI-2525SI offers a dependable and cost-effective solution for extending Ethernet networks over fiber.

Compare Model Specifications

 Model Name Device Type Ethernet Ports Ethernet Speed Fibre Ports Fibre Speed IP Rating Market Certifications Mounting Input Voltage Warranty Operating Temperature
EKI-2525SI-AE Unmanaged Switch 4 10/100 Mbps 1x Single-mode SC type fiber optic port 100 Mbps IP30 CE, RoHS, FCC Class A DIN-Rail, Wall 12V to 48V DC 5 Years -40 to +75°C
EKI-2525SI-ST-AE Unmanaged Switch 4 10/100 Mbps 1x Single-mode ST type fiber optic port 100 Mbps IP30 CE, RoHS, FCC Class A DIN-Rail, Wall 12V to 48V DC 5 Years -40 to +75°C
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Model Name Device Type Ethernet Ports Ethernet Speed Fibre Ports Fibre Speed IP Rating Market Certifications Mounting Input Voltage Warranty Operating Temperature
EKI-2525SI-AE Unmanaged Switch 4 10/100 Mbps 1x Single-mode SC type fiber optic port 100 Mbps IP30 CE, RoHS, FCC Class A DIN-Rail, Wall 12V to 48V DC 5 Years -40 to +75°C
EKI-2525SI-ST-AE Unmanaged Switch 4 10/100 Mbps 1x Single-mode ST type fiber optic port 100 Mbps IP30 CE, RoHS, FCC Class A DIN-Rail, Wall 12V to 48V DC 5 Years -40 to +75°C

Delivery & Returns

We offer a range of delivery options to suit your needs.

UK Mainland

  • Free next day shipping on all orders over £150 (UK Mainland only)
  • Next day delivery - £12 (UK Mainland only)
  • Postcode Exclusions: ZE, KW15+ PO 30, JE, HS, GY, TR, IM, AB31+, KW 1-14, FK19+, PA20+, IV, PH

Northern Ireland & Highlands

  • Northern Ireland (2 business day delivery) - from £40 (UKIMS required for NI)
  • Highlands delivery (up to 3 business days) - from £30

Ireland

  • Ireland Economy (2-5 business days) - from £35
  • Ireland Priority (1-3 business days) - from £50

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.

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Advantech 5 Port Unmanaged Industrial Ethernet Switch

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Select the products of this series that you wish to request quantity or project pricing, or lead time information for:

  • EKI-2525SI-AE

    5 Port Unmanaged Industrial Ethernet Switch – 4x Fast Ethernet – 1x Fast Fibre Single-Mode SC 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

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