Mounting Systems FD3 flexible rear module holder

The Mounting Systems centre clamp is a universal connecting element for safely securing two adjacent solar modules to a substructure. This version is designed as a universal clamp and flexibly covers module frame heights from 30 to 40 mm. The specification "40 mm" refers to the width of the clamping surface, which ensures optimal load distribution on the frame edges.Thanks to the variable clamping range, the component automatically adapts to the respective frame thickness when tightened. This reduces complexity in material planning, as only one type of clamp is needed for various module generations.Highlights at a glanceFlexible clamping range: Suitable for solar modules with frame heights between 30 mm and 40 mm.Wide contact surface: The 40 mm wide clamping jaw ensures a stable hold and prevents damage to the module frame by localised pressure.High corrosion resistance: Made from high-quality aluminium and stainless steel screws for long-lasting resistance to weathering.Efficient installation: Allows simultaneous fixing of two modules with only one fixing point, reducing installation time per kilowatt-peak ($kWp$).Universal compatibility: Precisely fits common Mounting Systems profile systems as well as many cross-brand aluminium mounting rails.Symmetrical load distribution: The design ensures uniform contact pressure on both adjacent module frames.Areas of applicationThe centre clamp is used within a module field for connection:Photovoltaic rooftop systemsStandard fixing for pitched roof systems to securely connect rows of modules together.Commercial PV systemsUsed in large projects where the speed and reliability of components are critical.Multi-row module fieldsWherever more than one module per rail row is installed and a defined space (module gap) is required between the units.Installation & safety instructionsCentringThe centre clamp must be positioned exactly between the two module frames. Make sure that both frames are covered evenly by the clamp.Tightening torqueTighten the stainless steel screw to the recommended torque (usually 8–10 Nm). Too little tightening jeopardises storm resistance, too much tightening can deform the frame.Earthing / potential equalisationObserve the applicable regulations regarding earthing of the mounting system. Some centre clamps feature integrated earthing pins that pierce the anodised coating of the frame. Properties CategoryCentre clamp natural aluminium Clamping range (frame height)30 – 40 mm MaterialAluminium (high-quality anodised/natural) Colour / FinishNatural aluminium (silver) Clamp length40 mm Area of applicationConnection between two solar modules CompatibilityMounting Systems rail profiles Mounting methodClick or screw fixing Weather resistanceVery high / corrosion-resistant  FAQs on the Mounting Systems centre clampCan I use this clamp for any solar module?Yes, provided the frame height is in the range of 30–40 mm.Most modern high-performance modules have frame thicknesses of 30 mm, 35 mm or 40 mm, making this clamp almost universally applicable.Is the distance between the modules specified by the clamp?Yes.The centre bar of the clamp creates a technical gap between the modules (usually approx. 20 mm). This gap is necessary for the thermal expansion of the rails and modules.Is the clamp supplied complete with sliding block?Usually, yes.The clamp is usually supplied as a set including screw and sliding block or click block. Check in advance if the block is compatible with your specific rail profile groove.Is this model also available for black module frames?Yes.For an aesthetically pleasing installation of full-black modules, this clamp is also available in a black anodised version available.

The Mounting Systems FD3 module support (front) is a central component of the FD3 flat roof system. This system is specially designed for ballast-optimised installation of photovoltaic systems on flat roofs with low load reserves. The front module support forms the low fixed point of the substructure and largely determines the angle of inclination of the solar modules.Made from high-quality, corrosion-resistant aluminium, the module support ensures a durable and secure connection between the floor rail and the front edge of the solar module. The aerodynamic design of the FD3 system minimises wind lift, significantly reducing the need for heavy ballast.Highlights at a glanceOptimised aerodynamics: Part of the overall FD3 system, which has been tested in a wind tunnel to ensure maximum stability with minimum counterweight.High material quality: Made of weather-resistant aluminium, ensuring a long service life without corrosion risk.Quick assembly: Thanks to pre-assembled components and simple screw connections, the front support can quickly be fixed to the floor rails.Precise inclination: In combination with the rear module support, a fixed installation angle (mainly 10° or 15°) is achieved for optimal yield.Protection of the roof covering: The system is installed without roof penetration; the module support distributes the loads evenly across the floor rails.Module-friendly fixation: The contact surfaces are designed so that the frames of the solar modules are securely held without causing mechanical stress.Areas of applicationThe FD3 module support front is the basic component for flat roof installations:Commercial flat roofsIdeal for large industrial halls with trapezoidal sheet metal or foil sealing, where the total weight of the system matters.Private houses with flat roofsSimple and visually discreet elevation for garages, carports or bungalows.East-west or south orientationThe module support can be flexibly used in various FD3 configurations, both for classical south-facing systems and roof area-optimised east-west systems.Installation & safety instructionsSystem networkThe front module support may only be used in combination with the original FD3 floor rails and the corresponding connectors to avoid jeopardising the structural approval.BallastingEnsure that the ballast required according to the structural plan (e.g., concrete blocks) is correctly placed on the rails, as the module support itself weighs nothing.Maintain distancesEnsure correct row distances during installation to prevent mutual shading of the modules. Properties CategoryFD3 module support front System compatibilityMounting Systems FD3 (flat roof) PositioningFront / Low side of the elevation MaterialHigh-strength aluminium / Stainless steel components Area of applicationFlat roof solar systems (Ballasted or Bolted) Installation methodModule clamping on FD3 substructure Weather resistanceVery high / Corrosion-resistant according to industry standard FunctionSecure anchoring of the module frame at the front Maintenance requirementMaintenance-free FAQs on the FD3 module support frontCan I adjust the angle of inclination flexibly?No.With the FD3 system, the inclination angle is determined by the fixed heights of the front and rear module supports (10° as standard). This provides high stability and easy wind load planning.Is the mounting material for fixing to the module included?Usually separate.The module support is attached to the floor rail. For securing the solar modules to the support, the appropriate centre and end clamps are required, which are matched to the frame height of your modules.Do I need protective mats?Yes, strongly recommended.To protect the roof membrane or bitumen sheet from mechanical damage by the floor rails, suitable protective mats (PADs) should always be placed under the system's contact points.How many front supports do I need?One support per module support point.Usually each module requires two support points at the front. Depending on the rail layout, one FD3 module support front is mounted per support point.

The Mounting Systems ball lock pin 6x50 mm is a high-strength connecting element for quick and tool-free locking of system components. It is primarily used in mobile or modular substructures where parts frequently need to be adjusted, secured or released.Thanks to the integrated spring mechanism and the locking balls, the bolt provides a form-fit connection that can only be released by deliberately pressing the push button on the handle. This guarantees maximum safety against unintentional slipping out.Highlights at a glanceQuick release system: Enables components to be connected and disconnected in seconds without the use of spanners or other tools.Self-securing: The spring-loaded balls at the end of the bolt hold the element securely in the hole and prevent it from coming loose under vibration.High shear strength: Made of stainless steel or high-strength galvanised steel to ensure maximum stability even under mechanical stress.Easy handling: The ergonomic handle (often designed as a T-handle or mushroom head) allows comfortable operation, even when wearing work gloves.Weather resistant: Ideal for outdoor use in photovoltaic or event systems as the materials are resistant to corrosion.Precision dimensions: A diameter of 6 mm and an effective length of 50 mm ensure an exact fit in standardised system drill holes.Areas of applicationThe ball lock pin is a versatile securing element:Adjustable mounting bracketsSecuring telescopic supports or variable tilt angles in PV systems (e.g. seasonal adjustment).Modular carrier systemsQuick fixation of outriggers, diagonal braces or ballast troughs in flat roof or open-air constructions.Trade fair & event constructionConnection of aluminium trusses or frame elements that need to be assembled and disassembled regularly.Transport protectionLocking of moving parts on assembly frames during transport to the construction site.Installation & safety instructionsDiameter testMake sure that the mounting hole is exactly 6 mm (H11 tolerance recommended) to avoid play or tilting.Complete locking mechanismWhen inserting, make sure that the balls at the end of the bolt emerge completely and snap into place. This is the only way to ensure full tensile strength.CleaningKeep the spring mechanism and the balls free of sand or coarse dirt to maintain the smooth operation of the push button in the long term. Properties CategoryBall lock pin 6x50 Diameter (d1)6 mm Effective length (l1)50 mm Bolt materialStainless steel (rustproof) Locking typeDouble ball lock OperationPush button (self-locking) Area of applicationFD3 systems / quick connections Weather resistanceVery high / corrosion-resistant Special featureLoss protection via eyelet possible  FAQs on the 6x50 mm ball lock pinCan the bolt replace a static screw connection?Only with appropriate design.A ball lock pin is primarily designed for shear forces. For load-bearing, permanent connections in PV statics, the system manufacturer's calculations must be observed. It is not a direct replacement for a firmly tightened M6 bolt with nut.Is there a captive lock for the bolt?Optionally available.Many users attach a retaining rope (stainless steel wire rope) to the handle of the bolt to prevent the bolt from being lost or falling off the roof when released.What does the "effective length" of 50 mm mean?The length of the shaft.The 50 mm refers to the area between the base of the handle and the start of the locking balls. The component package that is penetrated may therefore be a maximum of just under 50 mm thick.Is the bolt rustproof?As a rule, yes.Mounting Systems usually uses stainless steel variants for outdoor applications. Please check the specific material number (e.g. A2/A4) if use in extremely salty sea air is planned.

The Mounting Systems Universal ballast tray with a length of 1831 mm is a key component for the ballasted installation of photovoltaic systems on flat roofs. It is used to securely hold weighting materials (such as paving slabs or concrete blocks) when the static requirements for wind load securing exceed the substructure's own weight.Thanks to its universal design, it can be flexibly integrated into various flat roof systems from Mounting Systems. The generous length of 1831 mm allows the ballast to be distributed over a wide area, which minimises the point load on the roof structure whilst ensuring high stability at the same time.Highlights at a glanceHigh loading volume: Provides sufficient space for a large number of ballast blocks to guarantee maximum stability even in high wind load zones.Optimal load distribution: Thanks to its length of 1831 mm, the weight is transferred evenly into the base rails, protecting the roof covering.Weather-resistant material: Made of high-quality aluminium or galvanised steel (model-dependent) to provide long-lasting protection against corrosion.Universal compatibility: Suitable for different flat roof configurations, both for south and east-west orientations.Secure fixing: The tray shape prevents the ballast blocks from slipping or falling, even under strong vibrations or inclines.Easy system integration: The tray is screwed directly to the base or connecting rails, thus becoming an integral part of the structural system.Areas of applicationThe ballast tray is indispensable for penetration-free flat roof installations:Large-scale PV installations on industrial roofsSecuring large module areas against suction and pressure forces at wind speeds in accordance with DIN EN 1991 (Eurocode 1).Roofs with sensitive waterproofingWherever mechanical fixing (screwing) into the roof is prohibited for warranty reasons.Installations near the coast or in exposed locationsAdditional weighting option for systems exposed to extreme weather conditions.Installation & safety instructionsObserve static calculationThe exact amount of ballast (in kg) per tray must be specified in the project-specific structural analysis report.Protecting the roof coveringEnsure that sufficient protection mats are placed under the contact points of the tray or rails to avoid mechanical abrasion.Even loadingDistribute the stones evenly within the tray to prevent one-sided loading of the substructure. Properties  CategoryTechnical data: Universal ballast tray Length1831 mm System compatibilityMounting Systems FD3 / Universal MaterialSteel (galvanised) / aluminium Area of applicationFlat roof photovoltaic systems FunctionSecure accommodation of ballast weights AdvantageProtecting the roof waterproofing Weather resistanceVery high / corrosion-protected Installation typeHook-in / screwing on base rail  FAQs for the Universal Ballast Tray 1831 mmHow many paving slabs fit in one tray?Depending on the dimensions of the slabs.For standard paving slabs (40 x 40 cm or 50 x 50 cm), several dozen kilograms of ballast can be securely accommodated, depending on stacking and weight.Can the tray be retrofitted?Yes.Provided that the Mounting Systems rail system offers the corresponding mounting points, the tray can also be integrated during an extension or retrofit of the statics.Does the tray need its own drainage holes for rainwater?Usually integrated.The tray design usually provides for water to drain freely to prevent waterlogging and uncontrolled weight gain due to water accumulation.Is the mounting material for rail fixing included?Usually supplied separately.The ballast tray is usually supplied as an individual item. The required system screws and sliding blocks should be ordered in accordance with the parts list for the mounting system.

The Mounting Systems EW XL base rail with a length of 2287 mm is the load-bearing base element for aerodynamic flat roof mounting systems in east-west orientation (EW). The "XL" version is specially optimised for accommodating large-format solar modules (multi-cell modules), which have a greater width or length than standard modules.This rail is placed directly on the roof membrane (using building protection mats) and serves as a stable base for the front and rear module supports. Due to its precise manufacturing and integrated mounting points, it enables rapid, modular assembly of the entire rail system without roof penetration.Highlights at a glanceExtra-long (XL): With a length of 2287 mm, the rail offers ample space for modern, large surface PV modules and the necessary clearances for aerodynamics.High static rigidity: The special aluminium profile is designed for high mechanical loads, to safely absorb wind and snow loads.Tool-optimised: Features prefabricated slots and hole patterns that allow precise positioning of the module supports and connectors.Ballast-optimised: The geometry of the base rail allows for easy and secure placement of ballast stones to weigh down the system.Weather-resistant aluminium: Permanent protection against corrosion, even with standing moisture on flat roofs.System integrity: Perfectly matched to the EW components from Mounting Systems for a form-fit and stable connection.Areas of applicationThe XL base rail is the backbone for large-scale flat roof projects:East-west elevations (10°/15°)Coupling two modules "back to back" for optimal use of roof space with even energy production throughout the day.Industrial & commercial roofsUsed on bitumen, foil or gravel roofs, where a ballasted solution without damaging the roof membrane is required.Large format modulesEspecially for PV modules with a width over 1.10 m or other custom dimensions that require a longer base.Installation & safety instructionsBuilding protection mats (PADs)Always place suitable building protection mats beneath the base rail to protect the roof membrane from mechanical damage and plasticiser migration.AlignmentEnsure the base rails are aligned exactly parallel to each other to avoid tension in the module field and installation problems with the connectors.Ballasting according to staticsThe rail serves as a carrier for the ballast. The exact position and quantity of stones must be taken from the project-specific structural plan. Properties CategoryEW XL base rail Length2287 mm System compatibilityMounting Systems FD3 (East-West XL) MaterialAluminium (EN AW-6063 T66) Area of applicationFlat roof (elevation for large modules) FunctionBase profile / load bearing and connection WeightOptimised for low static roof load Weather resistanceVery high / corrosion-free MaintenanceMaintenance-free  FAQs on the EW XL 2287 mm base railWhy is the rail 2287 mm long?For double module structure.In an east-west system, two modules are mounted opposite to each other. The length of 2287 mm covers the base area of both modules, including the necessary clearances for ridge coupling and aerodynamic optimisation.Can I also use this rail for a purely south-facing orientation?Conditionally.Basically, this profile is perforated for Mounting Systems' EW system. For south-facing systems, there are often specific base rails with different lengths and hole patterns (e.g. S systems).How are the rails connected to each other?Via cross-connecting rails.The stability of the field is achieved by screwing the base rails to cross connectors. This creates a continuous grid that jointly absorbs wind loads.Is the aluminium walkable?Yes, during installation.The rail is stable enough to be carefully walked on during installation. Nevertheless, point loads directly on the roof membrane should be avoided.