In the entrance design of modern buildings, automatic doors are not only expected to provide convenient opening and closing but also to meet higher requirements for safety, operational performance, and emergency egress. One notable solution is the NABCO GT-1175 breakout sliding door*, an automatic sliding door system equipped with a breakout mechanism that allows the door panels and side screens to be pushed open when necessary, creating a wider passageway. This technology is particularly useful at entrances with high safety requirements while still needing to maintain convenience and aesthetics during everyday operation. So, what makes the NABCO GT-1175 different? Let’s explore how the breakout mechanism works and which technologies help the door system operate precisely and reliably over the long term in the following article.
What is breakout technology in automatic doors?
Breakout is a mechanism that allows the door panels and side screens of a sliding door system to be pushed open perpendicular to the rail, rather than moving only sideways as they do during normal sliding operation. During everyday use, the door continues to open and close automatically for pedestrian access. When an emergency exit is required or large equipment and objects need to be moved through the entrance, the breakout mechanism allows the passageway to be widened without disassembling the door system.
With the NABCO GT-1175 breakout sliding door, the door panels and side screens can be swung open up to 90°, creating additional access space when needed. This is a notable difference compared with conventional automatic sliding doors, particularly for projects where both everyday use and special situations need to be taken into consideration.
6 key technologies and features of the NABCO GT-1175 breakout sliding door
90° breakout opening for a wider passageway
A defining feature of the NABCO GT-1175 is its 90° breakout mechanism. When emergency egress is required or bulky equipment and objects need to be transported through the entrance, the door panels and side screens can be pushed open to a 90° angle, expanding the passageway.
Rather than serving only everyday automatic opening and closing, the door system is designed to provide a wider passageway when special circumstances arise. This is a notable advantage for projects with high requirements for emergency egress and accessibility.
Integrated NSW A01 sensor for detecting movement direction
An automatic door system not only needs to detect the presence of a person but also needs to determine whether that person is approaching the door or simply passing across the sensor area. The NABCO GT-1175 breakout sliding door can be integrated with the NSW A01 sensor, which can detect the direction of movement. This allows the system to generate an appropriate opening signal and helps reduce unnecessary door activation when users do not actually intend to pass through the entrance. As a result, the door is more convenient to use while unnecessary opening and closing cycles are reduced.
NSW A01 sensor detects movement direction on NABCO automatic doors
Integrated access control solutions
For buildings that require access control, the door system can be integrated with identification solutions such as facial recognition. When connected to the building’s access control system, the automatic door does more than simply open and close; it also becomes part of the user access management process.
This entrance solution can be considered for high-end residential buildings, office buildings, and areas requiring strict access control.
Urethane rollers and stainless steel-reinforced rail
Door movement depends not only on the motor but also directly on mechanical components such as rollers and guide rails. The NABCO GT-1175 uses Urethane rollers combined with a stainless steel-reinforced aluminum rail system, helping reduce friction as the door panels move. This structure contributes to reducing vibration, maintaining precise movement, and supporting smoother door operation under frequent use.
This is also an example of how NABCO pays attention to mechanical components that may not be readily visible but have a direct impact on the user experience and service life of the door system.
PDA support for checking operating history
Automatic door inspection and maintenance become more convenient when technicians can access information about the equipment’s operating history. The NABCO GT-1175 supports PDA connectivity via Bluetooth, allowing technicians to check and store operating history information without opening the equipment cover. This makes inspection more convenient and supports technicians during maintenance and troubleshooting.
CAN – Real-time signal transmission
In an automatic door system, sensors, controllers, and drive mechanisms need to exchange information accurately so that the door can respond correctly to its actual operating status. CAN technology supports real-time signal transmission, allowing system components to communicate with each other more quickly and accurately. When combined with the sensor and control systems, this data communication capability contributes to maintaining precise operation during each opening and closing cycle.
What safety requirements does the NABCO GT-1175 breakout sliding door address?
For automatic doors installed in public buildings, safety should be considered from the design stage. The breakout mechanism is one solution that allows the passageway to be widened when necessary, particularly when a project needs to account for emergency egress or access requirements in special situations.
The NABCO GT-1175 is introduced as meeting international standards and technical requirements related to automatic door safety, including:
- EN 16005: a European standard concerning safety in the use of power-operated doors and gates.
- JIS A 4722: a Japanese Industrial Standard concerning automatic doors.
- TÜV: certification assessing conformity with applicable technical and safety requirements.
In addition, the Emergency Breakout mechanism is also used in various automatic door systems in the United States, particularly at entrances to public buildings where emergency egress capability is required.
However, the applicable standards and safety solutions for each door system should be determined based on the equipment configuration, building type, and construction regulations applicable in each market.
What types of projects is the NABCO GT-1175 breakout sliding door suitable for?
By combining everyday automation with the ability to widen the passageway when necessary, the NABCO GT-1175 breakout sliding door can be considered for projects that need to meet requirements for convenience, safety, and flexible entrance organization at the same time.
Typical applications include:
- High-end residential buildings: combining automation with access control and high safety requirements.
- Office buildings: suitable for entrances with regular pedestrian traffic.
- Hotels: meeting requirements for aesthetics, user experience, and safety.
- Shopping centers: supporting pedestrian flow at main entrances.
- Public buildings: suitable for locations where emergency egress and accessibility need to be considered.
- Projects requiring equipment transportation: the breakout mechanism provides additional space when large objects need to be moved through the entrance.
However, selecting the GT-1175 should still be based on the entrance dimensions, site layout, pedestrian traffic, emergency egress requirements, and intended operating configuration of each project.
Sonha Auto – NABCO automatic door distributor and solution provider in Vietnam
Sonha Auto supplies and implements NABCO automatic door solutions for various types of projects, from hotels, office buildings, and residential complexes to shopping centers and projects with high requirements for safety and pedestrian traffic.
One practical example is the NABCO GT-1175 breakout sliding door at Times City urban complex in Hanoi. This is a large-scale urban development integrating residential apartments, a shopping center, and various amenities within the same area. Its high usage density and pedestrian traffic mean that entrances need to simultaneously meet requirements for frequent operation, safety, and flexible passageway organization.
The application of the NABCO GT-1175 at Times City demonstrates that the breakout mechanism is not only a technological feature but also offers practical value when applied to projects with frequent automatic door usage.
For each project, Sonha Auto evaluates the entrance dimensions, site layout, pedestrian traffic, operating frequency, and safety requirements before recommending a configuration. In addition to consultation and installation, Sonha Auto also provides maintenance, repair, and component replacement services to help maintain stable system operation throughout its service life.
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If a project requires an automatic sliding door with a breakout function, the NABCO GT-1175 is a notable entrance solution to consider when everyday operating requirements need to be combined with the ability to widen the passageway in special situations.
