Mag Locks

Mag Locks

Mag locks, also known as magnetic locks or electromagnetic locks, are high-security locking devices that use the power of electromagnetism to secure doors. Known for their reliability, durability, and fail-safe operation, mag locks are widely used in access control systems across commercial, institutional, and industrial environments. John Barnes Group supplies premium mag locks from trusted brands Dormakaba and Lockwood—both renowned for delivering robust security solutions compliant with Australian Standards.

Mag locks are especially suited to environments where quick, safe, and remote-controlled locking is essential, such as office buildings, hospitals, schools, airports, and secure facilities. Buy Mag Locks online from our online shop today!

What Are Mag Locks?

A mag lock consists of two main components: an electromagnet mounted on the door frame and an armature plate attached to the door. When the lock is powered, the electromagnet creates a strong magnetic field that bonds the plate to the magnet, holding the door closed. When power is cut—either by access control command or emergency release—the magnetic field dissipates, allowing the door to open.

Because mag locks are inherently fail-safe, they release automatically during power outages, making them ideal for applications where life safety and emergency egress are critical. 

Types of Mag Locks

Buy Surface-Mounted Mag Locks online

Mounted on the door frame surface, these are the most common type, suitable for single or double doors.

Use cases:

• Office entry doors

• Commercial building lobbies

• Internal secure rooms

Buy Mortice (Concealed) Mag Locks online

Installed within the door frame or leaf for a clean, architectural appearance while maintaining strong holding power.

Use cases:

• High-end architectural projects

• Government buildings

• Corporate boardrooms

Buy Single Mag Locks online

Designed for single-leaf doors, offering holding forces ranging from 250kg to over 500kg.

Use cases:

• Secure internal doors

• Access-controlled offices

Buy Double Mag Locks online

Two electromagnetic units for securing double-leaf doors.

Use cases:

• Building entrances

• Commercial corridors

Buy Shear Lock Mag Locks online

Use a combination of magnetic force and mechanical interlocking to resist force in multiple directions.

Use cases:

• High-security environments

• Industrial facilities

Key Features and Specifications

• Holding Force: Typically 250–600kg for standard models; up to 1000kg for high-security applications

• Voltage: 12V or 24V DC (field-selectable on some models)

• Operation Mode: Fail-safe (unlocked without power)

• Monitoring Options: Built-in door status and lock status sensors for integration with security systems

• Mounting: Surface, mortice, or bracket-mounted for glass, timber, steel, or aluminium doors

• Finishes: Anodised aluminium, stainless steel faceplates, or powder-coated options

Australian Standards and Compliance

Mag locks offered by John Barnes Group meet or exceed relevant performance and safety requirements:

• AS4145.2: Locksets and hardware performance requirements

• AS1428.1: Accessibility—ensuring mag lock systems allow free egress in compliance with the Building Code of Australia

• BCA/NCC: Fire safety and emergency egress compliance

• AS/NZS 60839: Alarm and electronic security systems integration

Material and Durability Considerations

Anodised Aluminium Housings

Lightweight, corrosion-resistant, and ideal for most indoor and sheltered outdoor applications.

Stainless Steel Faceplates

Provide enhanced durability and corrosion resistance in high-use or harsh environments.

Weather-Resistant Sealing

For mag locks used outdoors or in coastal areas, weather-sealed models prevent moisture ingress and extend product life.

Applications: Residential vs Commercial

Residential Applications

While less common in private homes, mag locks can be used in:

• High-security home offices

• External gates integrated with intercom access

• Luxury apartments with electronic access systems

Commercial Applications

Mag locks are a staple in modern access control for:

• Office building main entries

• Retail and hospitality access points

• Healthcare facilities for controlled access zones

• Airports and transportation hubs

• Educational facilities requiring restricted access areas

Product Selection Guidance

For Architects and Designers

• Choose lock type based on holding force and aesthetic requirements

• Specify monitoring functions for integration with security systems

• Ensure compliance with egress and accessibility regulations

For Builders and Installers

• Confirm compatibility with door type and frame material

• Select correct voltage and wiring configuration

• Ensure brackets and fixings suit the door application

For Facility Managers

• Choose monitored models for real-time door status

• Consider weather-sealed units for outdoor or coastal installations

• Implement regular maintenance checks for reliability

Installation Tips

• Align armature plate and magnet for full surface contact

• Use supplied mounting hardware and brackets for secure installation

• Test operation with access control system before final handover

• Confirm free egress function to meet compliance requirements

Maintenance and Care

• Clean magnet and plate surfaces to remove dust and debris

• Inspect mounting hardware for wear or loosening

• Test release function regularly to ensure reliability in emergencies

Order from John Barnes Group

John Barnes Group offers a curated range of Dormakaba and Lockwood mag locks with full technical support for design, installation, and maintenance. We assist with:

• Product selection tailored to your security and compliance needs

• Integration with access control and building management systems

• Weather, fire, and egress compliance considerations

Contact us today to discuss your project’s magnetic locking requirements: https://johnbarnesgroup.au/contact/