Magnetic locks (maglocks) are a reliable and increasingly common choice for securing commercial, industrial, and institutional buildings. Unlike traditional mechanical locks, they offer fast, keyless access, seamless integration with digital systems, and fail-safe functionality for emergencies.
In this guide, we’ll explain what magnetic locks are, how they work, their pros and cons, and where they’re used — helping you determine if they’re the right solution for your facility.
What is a Magnetic Lock?
A magnetic lock, or maglock, is an access control device that uses electromagnetic force to secure a door. It typically consists of two parts: an electromagnet mounted on the door frame, and an armature plate mounted on the door.
When power is supplied to the electromagnet, it creates a magnetic field that holds the armature plate in place. This magnetic force keeps the door locked. Removing the power — whether manually, remotely, or during an emergency — deactivates the magnet, releasing the lock.
Maglocks are widely used in environments where keyless entry, automated access, and fail-safe emergency egress are important.
How Do Magnetic Locks Work?
Magnetic locks rely on the principle of electromagnetic attraction. Their core components include:
- Electromagnet: Installed on the door frame
- Armature plate: Installed on the door itself
When electrical current passes through the electromagnet, it generates a magnetic field that tightly binds the armature plate. This force is strong enough to keep the door locked against physical pressure.
Maglocks are fail-safe by design: if power is lost (e.g. during a fire or power outage), the door will automatically unlock. This makes them particularly suitable for emergency exits and compliance with safety regulations.
Advantages and Disadvantages of Magnetic Locks
Advantages
| Feature | Benefit |
|---|---|
| Easy to install | Surface-mounted design makes installation straightforward |
| No mechanical keys | Reduces risk of key loss or unauthorised duplication |
| Low maintenance | Fewer moving parts means less wear and tear |
| Remote control | Can be unlocked via buzzer, access system, or app |
| Fail-safe operation | Doors unlock automatically during power failure |
Disadvantages
| Limitation | Consideration |
|---|---|
| Power-dependent | Requires constant electricity or battery backup |
| Higher cost | More expensive upfront than basic mechanical locks |
| Requires monitoring | Magnetic force may weaken over time with heavy use |
Where Are Magnetic Locks Used?
Maglocks are widely deployed across multiple sectors due to their reliability, ease of integration, and emergency safety features.
- Office Buildings: Control access to restricted areas using ID badges or PIN codes
- Healthcare Facilities: Secure wards, medication rooms, and staff-only zones
- Educational Institutions: Automate entry across classrooms, labs, and admin offices
- Residential Complexes: Offer secure, keyless access to main entrances or shared areas
- Industrial Sites: Protect sensitive equipment, inventory, or IP with access tracking
In each of these settings, magnetic locks improve security while reducing friction for daily users.
Integration with Access Control Systems
One of the biggest advantages of magnetic locks is their compatibility with modern access control systems, which can authenticate users and trigger door unlocking remotely.
- Keypad entry: PIN codes for approved users
- RFID and smart cards: Contactless access via proximity cards
- Biometric systems: Fingerprint or retina recognition
- Mobile apps: Smartphone-based remote access
- Motion sensors: Automatic unlock as users approach
Access control systems also allow for audit logging, scheduled access, and multi-factor authentication, all while using the maglock as the primary locking mechanism.
Why Choose Goudsmit UK for Magnetic Components?
At Goudsmit UK, we supply precision-engineered magnets and magnetic assemblies used in access control systems across industries.
With over 21 years of experience, our team works closely with engineers and OEMs to develop components that meet exacting safety, performance, and quality standards.
What We Offer
- Custom magnetic solutions tailored to your locking system or application.
- High-performance materials to ensure consistent force and reliability.
- Compliance with ISO 9001 standards for quality and traceability.
- Support from design to manufacture helping you turn ideas into production-ready components.
For more information on our products and services download our brochure.
