While traditional mechanical break glass remains a proven method of emergency egress, the challenge is how systems recover after activation. This is where electronic break glass changes the equation.
Introduction
Emergency door release is a fundamental requirement in any access control system.
Whether installed in commercial buildings, healthcare facilities, industrial sites, or critical infrastructure, the expectation is simple. When required, the door must release immediately and safely.
Traditional mechanical break glass devices have performed this role effectively for decades. They are simple, direct, and reliable.
However, modern access control systems are no longer isolated devices. They are networked, monitored, and often distributed across multiple doors, floors, or sites.
In this environment, the conversation is shifting.
Not about whether the door releases. But about what happens after it does.
What a Break Glass Unit Actually Does
A break glass unit, also referred to as an emergency door release, allows occupants to manually unlock an electronically secured door without the use of a card, code, or key.
The operation is straightforward:
- The protective cover is lifted
- The actuator is pressed
- Power to the lock is interrupted
- The door releases immediately
Break glass units are typically installed alongside fail-safe electric locks or automatic doors as a secondary means of egress.
They do not replace the fire trip interface between the Fire Indicator Panel and the access control system. Instead, they provide a direct, local method of releasing the door during non-fire emergencies or access control faults.
The Limitation of Traditional Break Glass Devices
The release function itself is rarely the issue.
The challenge is what happens next.
Once activated, a traditional break glass unit must be physically reset. This requires a site visit to open the device, reset or replace internal components, and confirm the door has been secured again.
In practice, this creates several operational issues:
- Doors can remain unsecured until a technician attends site
- Security teams must be dispatched to perform resets
- Nuisance activations carry real labour cost and disruption
- Glass elements or internal parts may need replacement
In single-door installations, this may be manageable.
Across multi-site or high-security environments, it becomes a recurring operational burden.
What the Jack Fuse Electronic Break Glass Changes
Electronic break glass does not change the core function of emergency door release.
The door still releases when required.
What changes is everything that happens after that moment.
The Jack Fuse Electronic Break Glass replaces the purely mechanical reset process with an electronically controlled device that can be monitored, reset, and integrated into the wider access control system.
This introduces a number of practical improvements:
1. Remote and automatic reset
The device can be reset remotely via the access control system or automatically through programmed logic.
This removes the need for physical attendance in many cases and significantly reduces system downtime.
2. System visibility and monitoring
Activation events can be reported back to the access control platform, providing clear visibility of:
- When the device was triggered
- Which door was affected
- Whether the system has been restored
This allows faster response and better operational oversight.
3. Controlled recovery of the door state
Instead of remaining unlocked until manually reset, the system can be configured to return to a secure state based on defined conditions.
This may include time delays, valid access events, or operator intervention.
4. Reduction in Maintenance Overhead
Eliminating manual resets reduces the need for repeated site visits, particularly in large or geographically distributed installations.
This has a direct impact on operational cost and resource allocation.
Real-World Applications Enabled by Electronic Break Glass
The real advantage of electronic break glass is not just in how it resets.
It is in what that capability enables at a system level.
1. Automatic reset via access control logic
Electronic break glass can be reset automatically after a defined period, such as 120 seconds after activation.
This allows temporary emergency release while ensuring the door is not left unsecured for extended periods.
2. Reset on valid access event
In lock power mode, a valid card read can both unlock the door and reset the break glass device.
The system effectively restores itself as part of normal user operation.
3. Re-entry door control
Electronic break glass can be used on re-entry doors to allow controlled access following an emergency release.
For example:
● The device is activated to allow entry
● A door reed switch detects closure
● The system resets the device and re-secures the door
This prevents doors from being left in an unsecured state.
4. Centralised Reset Across Multiple Doors
Multiple devices can be connected to a shared reset input.
A single command, either from an operator or access control system, can restore all doors simultaneously.
This is particularly valuable in large facilities with many access points.
Where This Matters Most
These capabilities become increasingly important in environments where access control systems are:
- Distributed across multiple buildings or sites
- Difficult or costly to access for maintenance
- Required to maintain high levels of security and uptime
Typical applications include:
- Commercial buildings and office complexes
- Healthcare and aged care facilities
- Industrial and manufacturing sites
- Government and critical infrastructure
In these environments, reducing recovery time and limiting manual intervention has a measurable impact on both security and operational efficiency.
Traditional vs Electronic Break Glass: Key Differences
To put this into context, the difference between traditional and electronic break glass is not in how the door releases, but in how the system behaves after activation.
From an engineering and operational perspective, the key differences sit in reset methodology, system visibility, and recovery behaviour. The comparison below highlights where those differences become significant in real installations.
| Feature | Traditional Break Glass | Electronic Break Glass |
| Door Release Function | Immediate mechanical release | Immediate electronic release |
| Reset Method | Manual reset required on-site | Remote or automatic reset |
| System Visibility | No status feedback | Integrated monitoring and alerts |
| Recovery Time | Dependent on site attendance | Immediate or automated recovery |
| Operational Impact | Ongoing labour and disruption | Reduced maintenance and faster restoration |
Frequently Asked Questions
What is the purpose of a break glass unit in access control?
A break glass unit provides a manual method to release an electronically secured door in the event of a system fault or emergency, without requiring credentials.
Does electronic break glass replace fire system interfaces?
No. Electronic break glass is a secondary egress mechanism. It does not replace the interface between the Fire Indicator Panel and the access control system.
How is electronic break glass reset?
Electronic break glass devices can be reset remotely via the access control system, automatically via programmed logic, or through system inputs such as valid card access or door status signals.
What are the advantages over traditional break glass?
The main advantages are reduced downtime, remote reset capability, improved system visibility, and lower ongoing maintenance requirements.
Can electronic break glass be integrated into existing systems?
Yes. Electronic break glass units are designed to integrate with standard access control systems and can be configured to suit a range of applications.
Ordering Information
- EBG-C: Electronic Break Glass with guard
- EBG-MB-C: Surface mounting back box
- Mini-FRI-XX: Interface relay for automatic door or gate integration
Final Thoughts
Electronic break glass does not change the core function of emergency door release.
The door still releases when required.
What it changes is everything that happens after that moment.
How the system is restored.
How long the door remains unsecured.
And whether anyone needs to attend site to bring it back online.
What it changes is how the system behaves in the minutes, hours, and potentially days after activation.
- Faster and more controlled recovery
- Clear visibility of events and device status
- Reduced reliance on physical site attendance
- Improved operational consistency across multiple doors and sites
The Jack Fuse Electronic Break Glass is designed specifically to address these challenges, replacing a purely mechanical reset process with a controlled, system-aware approach to recovery.
This becomes increasingly important as installations scale, where repeated site visits, delayed resets, and lack of visibility introduce real operational cost and risk.
About the Author
James Rutty is a Director at Powerbox Australia, with over 15 years of experience supporting electronic security installations across Australia and New Zealand. He works closely with integrators, consultants, distributors, and end users to ensure DC power systems are correctly specified, standards-compliant, and reliable in the field.
James, together with the Powerbox team, has helped expand the company's DC-UPS range and related security solutions to support Government, Defence, Critical Infrastructure, Data Centre, and Commercial projects. He works alongside Powerbox's engineering, sales, and technical support teams to ensure product direction and customer outcomes remain aligned with the evolving needs of access control, intrusion detection, and perimeter security applications.
With a national distribution network and locally supported manufacturing, the Powerbox team remains committed to practical, standards-aligned system design. This approach simplifies installation, improves reliability, and supports long-term maintainability across electronic security installations.
