Overhead Door Closer OTS 633 N
The door closer for single-leaf doors up to 950 mm leaf width impresses with certified quality according to EN 1154 and fixed closing force EN 3. With continuously adjustable valve functions from the front, thermomatic and safety valves, it guarantees reliable, temperature-independent closing performance. The OTS 633 N enables a door opening and closing angle of up to 180°. A mechanical hold-open device and an opening limiter are optionally available.
Modern door closers for standard and project solutions
Our door closers combine maximum functional reliability and durability with flexible adjustment options. They ensure reliable and secure door closing, enhance fire protection and burglary resistance, and contribute significantly to the energy efficiency of buildings by ensuring tightly closing doors.
Fire protection
Reliable door closing effectively prevents the spread of fire and smoke within the building.
Functional reliability
Thermomatic valves ensure consistent closing performance even with temperature fluctuations, while integrated safety valves in the closer provide protection against overload and vandalism.
Flexibility
Various adjustment options and installation types provide high flexibility and allow optimal adaptation to different door situations.
Energy efficiency
Consistently secure door closing significantly increases a building’s energy efficiency, as neither cold nor heat can penetrate.
Areas of application
- Single-leaf fire and smoke protection doors
- Door leaf width max. 950 mm
- Suitable for DIN left and DIN right
- Door opening and closing angle max. 180°
Installation types
- Standard installation on hinge side
- Head installation on hinge side
- Head installation on opposite hinge side
Technical data & standards
| Technical data | OTS 633 N | |
|---|---|---|
| Application | ||
| Max. door leaf width [mm] | 950 | |
| Max. door opening angle | 180° | |
| Approved for use on fire doors | x | |
| Suitable for barrier-free construction according to DIN 18040 | x | |
| Dimensions | ||
| L x H x D [mm] | 202 × 58 × 43.5 | |
| Adjustment functions | ||
| Closing force according to EN 1154 | 3 | |
| Closing speed | x | |
| Latching speed | x | |
| Accessories | ||
| Mechanical hold-open device | optional | |
| Opening limiter | optional | |
Standards and safety requirements
Our OTS 633 N door closers meet the highest standards. They are ideal for barrier-free construction according to DIN 18040, approved for fire doors, and tested according to EN 1154, ensuring maximum safety and comfort.
door closing device with controlled closing sequence
DIN EN 1154 refers to door closing devices with controlled closing action. This standard specifies the requirements and test methods for door closers used on swing doors to ensure that they can reliably close again after opening. The classification of door closers according to this standard is based on criteria such as application class, durability, door closer size, and suitability for fire and smoke protection doors.
barrier-free construction
The DIN 18040 standard deals with the planning principles for barrier-free construction. It is divided into different parts that cover various aspects of construction to enable people with disabilities, elderly persons, and children to participate equally in everyday life. An important aspect of this standard is the easy opening of doors without external assistance. In this context, requirements are placed on door closers, such as limiting the operating forces to ensure that doors are easily accessible.
suitability for fire protection
Approved for use on fire and smoke protection doors
