Interlocks for explosive atmospheres and hazardous locations

Mechanical and electromechanical interlocks for situations where combustible dusts or flammable gases may be present. Made of stainless-steel enclosures, with IP69 rating.

Alfred product family showcasing safety solutions for explosive atmospheres.
Made of 316 stainless steel
IP69 rated
Ex certified for explosive atmospheres
Highly configurable

Benefits of Alfred

Rated for Explosive Environments

Third party certified to guarantee the highest level of safety. Rated for use within ATEX, IECEx and HazLoc environments.

Highly Configurable

A selection of actuators, head modules, and key adaptors which can all be mounted on an ex rated interlock.

Enforce Sequences

Enforce a predetermined sequence of events according to the application requirements. Robust lock protection.

Unexpected Start-Up Prevention

Protect operators with personnel keys as proactive inhibit functions. It is possible to include up to three trapped key adaptors.

Mechanical Only Solutions

Keep all wiring outside the explosive atmosphere and hazardous location. Suitable for Zone 0 / 20, or Division 1.

Electromechanical Solutions

Interlocks with or without guard locking to control access to machinery, suitable for Zone 1 / 21, or Division 2.

Rated for Explosive Environments

Third party certified to guarantee the highest level of safety. Rated for use within ATEX, IECEx and HazLoc environments.

Highly Configurable

A selection of actuators, head modules, and key adaptors which can all be mounted on an ex rated interlock.

Enforce Sequences

Enforce a predetermined sequence of events according to the application requirements. Robust lock protection.

Unexpected Start-Up Prevention

Protect operators with personnel keys as proactive inhibit functions. It is possible to include up to three trapped key adaptors.

Mechanical Only Solutions

Keep all wiring outside the explosive atmosphere and hazardous location. Suitable for Zone 0 / 20, or Division 1.

Electromechanical Solutions

Interlocks with or without guard locking to control access to machinery, suitable for Zone 1 / 21, or Division 2.

Alfred Features

Bolt Modules

Mechanical or electromechanical options. Alternative bolt lengths and number of locks available. Electromechanical variants are available with monitoring circuit or solenoid locking.

Guard Locking Function

For run-down times. Available in both Power-To-Unlock and Power-To-Lock versions. Interlocks without guard locking are also available for access to machines with no run-down times.

Internal release adaptor from Alfred product, showing compact design for safety systems.
Escape Release

Escape release options (variable length) to allow personnel to leave the safeguarded space should they become trapped.

Stainless Steel Interlocks

Made of 316 stainless steel and with a retention force of 7kN, Alfred products are extremely robust and perfect for harsh environments and explosive atmospheres.

TA actuator installed on an S6 head from amGardpro, showcasing secure interlock engagement.
Heads and Actuators

A selection of five actuators for hinged and sliding guards. Market-leading misalignment capabilities to cope with guards’ movement and variability in machine guarding installation.

Intermediate Transfer

Key exchange devices (mechanical or electromechanical) for use in trapped key systems. Electromechanical variants are available with monitoring circuit or solenoid locking.

Feature

Mechanical Interlock

Configurable at purchase. Mechanical only interlocks for trapped key systems keep electrical wiring outside explosive atmospheres and hazardous locations. 

Suitable for Zone 0 / 20, or Division 1. Multiple locks and extracted key options available. 

Feature

Electromechanical Interlock

Interlocks with or without guard locking to control access and power isolation in Zone 1 / 21, or Division 2.

Configurable at purchase. Escape release, multiple locks, and extracted key options available.

Speak to an expert about your access, safety and control needs

Contact our expert sales team to discuss the best solution for your application needs, or use our custom configurator to build the right solution for you.

alfred Videos

Document Downloads

Log in to access all documents

Access additional technical files related to this product range by signing up to MyFortress

News & Insights

Fortress Safety Unveils New Website and Brand Refresh
Hand turning key in mGard trapped key safety interlock unit
New Webinar: Trapped Key Interlocking in Machinery Safety
Automated Storage and Retrieval System (ASRS) in operation
Webinar Recap: Enhancing Safety in Automated Storage and Retrieval Systems (ASRS)
Lush green trees representing environmental sustainability and natural resource preservation
Driving Sustainable Change at Fortress

Not sure where to start? We’re here to help

Our dedicated team of experts are here to help create the right solution for you. They can analyse your industry and specific application needs to offer recommendations on how Fortress products could benefit your setup.

© Fortress Interlocks 2021. All rights reserved.

Log In to MyFortress

Don’t have an account yet?

© Fortress Interlocks 2024. All rights reserved.

Login to MyFortress

Don’t have an account yet?

© Fortress Interlocks 2021. All rights reserved.

Upcoming Webinar:

Alfred