SAM – Surge Arrestor Monitor

SAM – Surge Arrestor Monitor
Address: WITT Solutions GmbH
Dyrotzer Ring 3
14641 Wustermark
Phone: +49 (33234) 2433 12 Connect: Website: View website Contact: Contact supplier View: View supplier Download: Download

Witt Solutions GmbH

The SAM device monitors the surge arrestor (SA) within a certain railway section and reports broken ones via an integrated GSM-Modem. It requires no external power supply. The integrated high-performance battery has a maximum uptime of 5 years.


The monitoring device detects the condition of the fuse through contactless current- and voltage measurements. A defective fuse causes a report which will be transmitted by the GSM module. The device requires no auxiliary power supply and no signal lines.


The monitoring device measures the current and the voltage curve across the fuse. The measurements are made with an altering current transmitter. The current pulse generated by melting fuses triggers a reversible signalling contact. The voltage measurement additionally monitors the triggering criteria. An SMS will be sent by the GSM-Module if it gets a report.

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WITT Solutions GmbH is an owner-managed, medium-sized high-tech company that develops and sells measuring and testing technology for monitoring power supply and superstructure systems for rail-bound traffic. Our professional power monitor products monitor e.g. earthing potentials, cable faults and contact voltages and are I4.0 capable as well as Railway Federal Office(EBA) approved products. With our innovative rail infrastructure monitoring systems, we are cooperation partners of renowned companies.

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