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Westermo Manuals & User Guides

Westermo designs robust industrial data communications products, including switches and routers, for mission-critical systems in harsh environments.

Tip: include the full model number printed on your Westermo label for the best match.

About Westermo manuals on Manuals.plus

Westermo Network Technologies AB designs and manufactures data communications products for mission-critical systems in physically demanding environments. The company provides reliable industrial networking solutions, including Ethernet switches, cellular routers, extenders, and modems.

Westermo products are widely used in social infrastructure sectors such as transport (rail and trackside), water and energy supplies, as well as in process industries like mining and petrochemicals. Known for their resilience against extreme temperatures, improved cybersecurity features, and long service life, Westermo devices ensure secure and continuous connectivity for industrial applications.

Westermo manuals

Latest manuals from manuals+ curated for this brand.

Westermo 50155 Backbone Routing Switch User Guide

August 12, 2026
Viper 3508-TBN Series Managed EN 50155 Backbone Routing Switch www.westermo.com General Information 1.1. Legal Information The contents of this document are provided “as is”. Except as required by applicable law,…

Viper-002-PL Series User Guide

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Official user guide for the Westermo Viper-002-PL Series EN 50155 Ethernet Powerline Bridge, covering installation, safety, and technical specifications.

Merlin 3400 Series Management Guide

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Comprehensive management and configuration guide for the Westermo Merlin 3400 Series industrial cellular routers, covering installation, hardware specifications, and system settings.

Westermo WeOS 4.35.0 Release Notes

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Release notes for Westermo WeOS 4.35.0, detailing new features, known limitations, fixed issues, and firmware upgrade procedures for industrial Ethernet switches and routers.

Westermo OS (WeOS) Management Guide

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Comprehensive management guide for Westermo OS (WeOS), covering configuration, maintenance, and advanced networking features for managed industrial network devices.

WeOS 5.29.0 Release Notes

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Official release notes for Westermo WeOS 5.29.0, detailing new features, fixed issues, known limitations, and upgrade procedures for industrial network devices.

Viper-012 Unmanaged EN 50155 Switch User Guide

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Official user guide for the Westermo Viper-012 unmanaged rugged Ethernet switch, detailing installation, safety, technical specifications, and compliance for industrial and rail applications.

Westermo support FAQ

Common questions about manuals, registration, and support for this brand.

  • How do I factory reset my Westermo Merlin router?

    To reset a Merlin series router to factory configuration, press and hold the reset button for 3 to 15 seconds until the LEDs flash fast, then release the button. Holding it longer (20-30 seconds) may reboot the router into recovery mode.

  • Where can I download firmware for my Westermo device?

    Firmware updates, software tools, and user guides can be found on the Westermo Product Support page on their official website.

  • What voltage allows the Merlin 3100 to operate optimally?

    The Merlin 3100 4G and Cat-M1 models typically draw current at 12 VDC. Refer to the specific user guide for your model's exact power input requirements and fuse recommendations (often a 1A or 2A fuse).

  • Does Westermo offer a warranty?

    Yes, Westermo provides a warranty for its industrial data communication products. Detailed warranty policies and return procedures are available on the Repair and Warranty section of their website.