What Type of Maglock Should Be Used for Fire Doors?
Fire doors are designed to:
- Prevent the spread of fire and smoke
- Provide a safe escape route during emergencies
- Automatically release for evacuation
Unlike standard access-controlled doors, fire doors must always prioritize fail-safe operation.
The correct choice for fire doors is:
Fail-safe electromagnetic lock (power-to-lock, power-off-to-unlock)
How It Works:
- When power is ON → door remains locked
- When power is OFF → door unlocks immediately
Why It Matters:
In the event of:
- Fire alarm activation
- Power failure
- Emergency override
The lock must release automatically to allow free exit.
Fail-secure locks (which stay locked when power is cut) are not permitted for fire doors.
A compliant fire door maglock must be connected to the building’s fire alarm system.
System Logic:
- Fire alarm triggers
- Power supply to maglock is interrupted
- Door unlocks instantly
Without this integration, the system may:
- Fail safety inspections
- Violate building codes
- Pose serious evacuation risks
Fire doors equipped with maglocks must include independent release mechanisms such as:
- Push-to-exit buttons
- Panic bars
- Emergency break glass units
These devices must directly cut power to the lock, ensuring immediate door release.
Holding Force
- Typical range: 280kg–350kg (600–800 lbs)
- Provides sufficient security without compromising safety
Voltage
- DC12V or DC24V (common standard)
Monitoring Output (Optional but Recommended)
- Door status signal (NO/NC)
- Helps integrate with access control and fire systems
Depending on the region, fire door maglocks must comply with:
- Local fire safety regulations
- Building evacuation codes
- Electrical safety standards
In many projects (hotels, hospitals, office buildings), inspections will specifically verify:
- Fail-safe behavior
- Fire alarm linkage
- Emergency release functionality
- Using fail-secure locks on fire doors
- Installing maglocks without fire alarm connection
- Ignoring emergency exit hardware
- Over-specifying holding force without safety design
These mistakes can lead to system failure during emergencies.
In real-world installations, maglocks on fire doors are rarely standalone devices. They are typically part of a fully integrated system that includes:
- Access control panels
- Fire alarm systems
- Backup power supplies (UPS)
The maglock acts as a controlled locking mechanism during normal operation, but always defaults to safe release in emergencies.
Conclusion
For fire doors, the choice is clear:
- Always use fail-safe electromagnetic locks
- Ensure fire alarm integration
- Include emergency release devices
A fire door is not just an entry point—it is a critical component of a building’s life safety system. Choosing the right maglock ensures both security and compliance, without compromising human safety.
