Company History

  • 2019

    ATOM Launch

    ncGard’s newest addition to the range is ATOM which is a compact and ultra-robust Solenoid Interlock with High-Coded as per ISO 14119 RFID in the actuator. It is suitable for use in applications up to PLe (Category 4). ATOM provides a discreet, easy-to-install solution with monitored inputs and OSSD outputs (Output Signal Switching Device). Daisy-Chain connections enables easier wiring installation and OSSD prevents fault masking powered from the same supply. The ATOM has a robust actuator design with high locking and retention force of 8kN as well as a complete compact design for installation in descreet locations. It is sealed to IP65 and IP67 and TUV Safety Certification Approved.

  • 2019

    FRANK Launch

    FRANK - Industrial Access Control

    Prevents unauthorised access and unauthorised line shut down.
    Simple installation and integration to a network, using your existing ID cards.
    Easy management of access permissions.

  • 2018

    ncGard Launch

    ncGard is Fortress’ complete range of non-contact safety switches for safeguarding machinery. Magnetic switches are available in both Polymer and Stainless Steel housings. For severe hygiene critical areas, high temperature versions are also available. 

    NCS IP69K solid state hall effect sensor 
    FM Range Magnetic Safety Switches
    FE Range Magnetically Coded Safety Switches 
    FS Range Generic Coded RFID Safety Switches 
    FR Range Individually Coded RFID Safety Switches 

    The ncGard product range also hosts Safety Relays that can be integrated with our amGardpro and tGard products. Fortress' Safety Relays are independently certified to PLe and are suitable for use with emergency stop (E-Stop) buttons and/or any two normally open safety devices

  • 2017

    Halma Company of the Year

    Fortress Interlocks named Halma Company of the Year 2017

  • 2017

    proNet Launched

    proNet is launched to add an Ethernet based networking capability to the amGardpro product range.

  • 2017

    Jo Smith - Managing Director

    In 2017 Fortress Interlocks appoints Jo Smith as the new Managing Director of the company.

  • 2016

    Slimline pro Launched

    Slimline pro is an option in the amGardpro range that houses the solenoid locking functionality in a body just 40mm wide.

  • 2016

    NCS Launched

    Our NCS (Non Contact Switch) product launched in 2016, bringing an IP69K solid state hall effect sensor to our product offering. 

    NCS is housed in a stainless steel housing that is ideal for severe hygiene critical areas. 

  • 2015

    amGardS40 Launched

    amGardS40  is a range of safety gate switches manufactured in 316 stainless steel. The range is modular in design, allowing a wide range of safety interlock switches to be configured to suit many industrial applications requiring IP69K. 

    The range is supplied in enclosures sealed to IP69K making it suitable to be pressure washed at high temperatures and has a retention force of 10,000N so it is ideal for ensuring guard doors are held closed until machines and/ or processes are in a safe condition. Each module has a slim body design of 40mm so that it can be easily fitted to guarding sections or areas where space is limited. 

    The rugged design and strength capability makes the S40 range an ideal choice for applications in harsh, outdoor, chemical and construction material industries.

  • 2013

    tGard Launched

    Our eGard range is totally re-designed and re-branded tGard. It uses a configurable concept to create a trapped key interlock, a safety gate switch, a machine control station or can be combined to provide all three functions in one configuration, housed in a metal enclosure.

  • 2012

    China Office Opens

    The first Fortress sales office is opened in Shanghai China to develop the local market.

  • 2012

    amGardpro Launch

    The amGardpro range is launched.

    amGardpro is the ultimate range of modular safety gate switch interlocks for heavy duty applications.  It's unique modular construction allows easy configuration and provides total electro-mechanical solutions for practically any safefguarding application up to SIL3 (EN/IEC 60261) Category 4 and PLe (EN/ISO 13849-1).

    The amGardpro system replaces all adaptions normally fitted within a guarding system, such that additional hardware like door catches, actuators, closing mechanisms, internal release mechanisms, key functions including authorised access and deadlocks are no longer needed. All of these separate functions can be incorporated into amGardpro configurations, resulting in the most flexible safety interlock solution available for today's industrial environment.

  • 2008

    Global Headquarters Opens

    A new global headquarters is purpose built in Wolverhampton England (our current location) with a manufacturing facility of 1400 square metres and similar size office space to house design, quality, finance and sales and marketing operations. At the same time new Fortress sales offices are established in Holland to cover the mainland European market and Erlanger KY to cover both the North and South American markets.

  • 2005

    eGard Launched

    Fortress develops eGard, its first range of standard duty interlocks. This range is multi-purpose in as much as it can be configured as a trapped key interlock, a safety gate switch, a machine control station or combined to provide all three functions in one configuration.

  • 2001

    mGard Launched

    Fortress creates the mGard range of trapped key interlocks using a new disc tumbler operating principle, the CL lock. This new range uses stainless steel extensively and is also modular in design to give maximum flexibility to customers when incorporating it into applications.

  • 1996

    amGard Devlopment

    The amGard range is further developed to create a unique portfolio of modular safety gate switches, including solenoid and non solenoid switches with “safety keys” for personnel protection.

  • 1995

    International Expansion

    Overseas sales offices are established to cover the European and North American territories

  • 1992

    amGard Launched

    Fortress designs and manufacturers its first solenoid controlled safety gate switch and brands it amGard

  • 1987

    Acquisition by Halma Plc

    Halma PLC purchase both Fortress Interlocks and Fortress Security from Lowe & Fletcher and incorporate both businesses into its Process Safety sector

  • 1980

    Fortress Australia Opens

    Fortress Security is established in Melbourne Australia manufacturing H31 range of trapped key interlocks to supply the Australian, New Zealand and South East Asian markets. Three of the original employees still work in the business today!

  • 1979

    Assembly Facility Opens

    Fortress establish an assembly facility in its own right in Bilston West Midlands

  • 1978

    Birth of the Valve Interlock

    Bolt type interlocks are used for applications in the oil and gas industry to ensure that valves may be open and closed in a given sequence – birth of the valve interlock.

  • 1975

    Fortress Interlocks

    Lowe & Fletcher rebrand the H31 series of trapped key interlocks to Fortress Interlocks and extend the range of applications to include electronic time delay interlocks and a special range of interlocks developed for the textile industry (carding and scribbling machines) together with explosion proof interlocks for use in the chemical industry.

  • 1974

    Health and Safety at Work Act (1974)

    As a direct consequence of UK Health and Safety at Work Act (1974), Lowe & Fletcher designers extend the range of housings for the H31 series of interlocks and create a range of trapped key interlocks that can be used in a range of safeguarding applications on dangerous machine or hazardous processes to ensure that all operations are carried out in a safe pre-determined sequence.

  • 1960

    Lowe & Fletcher

    Lowe & Fletcher (traditional family run locksmith company) approached by UK’s Central Electricity Generating Board to develop a range of interlocks to control the operation of switchgear. The H31 section in Lowe & Fletchers Willenhall factory develop a radial pin tumbler mechanism that is non masterable as a direct competitor to Castell’s figure lock and production of the H31 series of Lowe and Fletcher trapped key interlocks is born.