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- Accessories
- Switchgear
- Mounting rails
- Gelbau Products
The right solution for each and every sector, whether it’s gate systems, passenger doors or work platforms. Wherever they’re used, the safety switching strips excel in terms of maximised availability, easy installation and dependability. Gelbau’s comprehensive range of products for switching strips and accessories, plus its extensive portfolio of switchgear, cover all of our customers’ safety requirements and guarantee maximum flexibility in designing safety-enhanced solutions.
Profile overview
Contact-Duo-Profiles – for dependable contacting
The Gelbau Contact-Duo-Profiles are ultra-flexible, one-piece rubber profiles made of EPDM or NBR, ideally matched to the closing edge of the gate or machine involved. The maximum actuating force lies well below the 150 N stipulated in the standard. In conjunction with the accessories offered and plug connection technology, the system can be easily and reliably assembled.
Quadro-Profiles – all good things come in fours
The Gelbau Quadro-Profile is used primarily in the field of local public transport, where it is installed as a safety feature for the closing edges of passenger doors in buses and trains. The EPDM profile can be used only in conjunction with a sealing profile. It is simply pushed into the hollow chamber of existing or newly developed sealing profiles. The profiles have a diameter of 18 mm or 22 mm, and require a sheath-profile with a hollow compartment minimum diameter of 21.5 mm or 25.5 mm. The profile is characterised by a high level of sensitivity.
Rubber-Sheath-Profiles – vertical protection
Doors with vertical closing edges, e. g. folding doors, have a crossbeam width of approx. 50 mm and a gap width requiring to be safeguarded of at least 120 mm. The closing edge safety feature is required to cover the entire crossbeam width and to close and seal the gap without triggering the switching strip. At the same time, it is required to possess high lateral sensitivity, so that a possible pinch is detected as soon as the door wings are turned. The rubber-sheath-profile developed specifically for this application, with the associated aluminium special rail and the Contact-Duo-Profile 3100.1610, meets these requirements. 
Accessory overview
Terminating plug connectors with resistor – Terminating plug connectors with resistor 8,2 kΩ
The terminating plug connector with resistor is a system component that constitutes the switching strip’s electrical termination in conjunction with a resistance evaluator. The resistance value is 8,2 kΩ. 
Flexible wire jumpers – a link for the Quadro-Profile
The wire jumpers are used for the Quadro-Profiles, and are here a part of the system. They form the cross-connection at the termination side. 
Connecting cable with plug connector – always in touch
The connecting cable with plug connector is a system component that is used to establish the link between the switching strip and the evaluator or control system on the connection side. It is available in lengths from 0.35 m to 15 m. 
End caps with circumferential edge – dependable protection
The end caps are a part of the system components of the Gelbau Contact-Duo and Quadro-Profiles. They serve to seal off the ends of the switching strips in a moistureproof configuration. Various types of connection are available. The caps can be supplied in NBR and EPDM, and in different colours, to suit the profiles concerned. 
Spiral cables – for bridging distances
The spiral cables are used in gate construction for bridging the distance to the evaluator electronics. The connecting cable of the switching strip is led to the terminal box on the moving part of the gate. The connecting cable leads from here via a cable spacer (if needed) to another terminal box on the fixed part of the gate. From there, the link to the evaluator electronics is completed with an independently insulated cable, provided by the customer. A guard spiral at the terminal box and at the spacer serves for strain relief and as anti-kinking protection for the spiral cable. 
Corner connectors – for all angles
The corner connectors, which are not a part of the system, solve the problem of nonswitching corners in the construction of customised angular solutions. They provide connections with full elasticity. The corner connectors are available as horizontal and vertical versions in a choice of angles with leg lengths of 45 mm. Unlike the standard angles for the 3100.0110I and 3100.0110N profiles, it is possible to assemble all profile types with angular dimensions to the customer’s specification. 
Stop buffers – for extended lifetimes
The stop buffers are not a part of the system, but prevent the switching strip suffering from a ground impact when the gate is lowered, thus extending its useful lifetime. Depending on the profile height involved, the stop buffers are available in the appropriate sizes, in black. The scope of delivery also includes a hammerhead screw for attaching the buffer to the mounting rail. 
Installation accessories – for self-assembly
We provide various aids for customers to assemble their systems on site. The Cyanoacrylat adhesive from Gelbau (as shown in the installation instructions) is suitable for affixing and sealing the end cap in both the NBR and EPDM qualities, and also for sealing the cable outlet. The adhesive is available in two different package sizes. The rubber scissors mean that cutting the safety switching strips without a compensation chamber, in particular, is child’s play as easy as pie. 
Switchgear overview
Switchgear – full monitoring
The switching devices monitor the switching strip connected in regard to actuation and interruption. They provide a potential-isolated safety relay contact for “Stop”.
Switching strips with a length of up to 100 m can be connected to the switchgear. Monitoring is performed on the closed circuit current principle with an 8.2 kΩ resistor as the electrical termination. The switchgears possess three LEDs (green, yellow, red), which are used to indicate different states:
 Green: switching strip connected, system ready for operation, safety contacts closed Yellow: error message “Open sensor circuit”, safety contacts opened Red: switching strip actuated, safety contacts opened
If, in the case of fail-safe (redundant) devices (Safety Category 3), the channels indicate a differing status; this signals a system malfunction and the safety contacts will be opened.
When the switching strip is actuated, the relay will drop out and the safety contacts will be opened.
Housing type A
The housing for installing the switchgear in a control cabinet is used for evaluators of Safety Categories 1 and 3. It is chosen when there is sufficient space in the control cabinet. The housing’s overall dimensions are 45 x 75 x 120 mm (W x H x D). 
Housing type B
The housing for surface installation is used for evaluators of Safety Categories 1 and 3. 
Housing type C
The housing for control cabinet installation is used for evaluators of Safety Category 3. Since the housing has a width of only 22.5 mm, it is chosen when there is not sufficient space in the control cabinet. The housing’s overall dimensions are 22.5 x 100 x 110 mm (W x H x D). 
Housing type D
The housing for control cabinet installation is used for evaluators of Safety Category 1. Thanks to its small width of 22.5 mm, this housing is also chosen in control cabinets with a restricted amount of space available. The housinghousing’s overall dimensions are 22.5 x 75 x 111 mm (W x H x D). 
Mounting rails
C-rails – for secure mounting
To affix the safety switching strips to the gate, machine or system involved, you can choose from a wide range of mounting rails. Depending on the application and profile types concerned, the mounting rails can be supplied in steel or aluminium. Different models (e. g. with and without a flange) provide multifarious options for mounting configurations.
If the customer so requests, Gelbau also offers an option for supplying the C-rails with boreholes, press-fit threaded bolts or press-fit nuts. 
C-rails
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H x W x Notch
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8 x 20 x 11 mm
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10 x 24 x 13 mm
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10 x 25 x 13 mm
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10/11 x 28 x 10.5 mm
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10 x 25 x 13 mm
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Article no.
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H x W x Notch
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10 x 25 x 13 mm
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18 x 25 x 13 mm
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15 x 30 x 12 mm
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9.3 x 24 x 11.5 mm
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8/8.5 x 18 x 7.5 mm
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Article no.
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H x W x Notch
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Special rail
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Aluminium plate
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