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Terminal blocks for photovoltaics
Innovative and tailor-made
Innovative terminal blocks for the specific requirements of photovoltaic technology.
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Product list Diode terminal blocks
Innovative terminal blocks for the specific requirements of photovoltaic technology – up to 1500 V DC.
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Product list Disconnect terminal blocks
We offer you innovative terminal blocks for the specific requirements of photovoltaic technology – up to 1500 V DC.
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Product list Fuse terminal blocks
We offer you innovative terminal blocks for the specific requirements of photovoltaic technology – up to 1500 V DC.
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Product list Potential collective terminal blocks
We offer you innovative terminal blocks for the specific requirements of photovoltaic technology – up to 1500 V DC.
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Product list Terminal blocks from 1000 V
Innovative terminal blocks for the specific requirements of photovoltaic technology – up to 1500 V DC
Design an environmentally friendly and cost-effective energy supply with Phoenix Contact. For years now, we have been a reliable, expert partner in the PV industry. Tailor-made terminal blocks up to 1500 V DC are available for all wiring tasks.
Your advantages
- Protect modules easily, thanks to compact fuse and diode terminal blocks
- Disconnect strings safely with disconnect terminal blocks up to 1000 V DC
- Save time and space when wiring with compact potential collective terminals
- Comprehensive product range of terminal blocks from 1000 V DC
- Reduction in logistics costs, thanks to the uniform CLIPLINE complete system accessories
The advantages at a glance:
Fuse terminal blocks
Fuse terminal blocks up to 1500 V protect individual strings against reverse currents. The optional LED display signals a blown fuse. The line currents can be connected and accumulated using appropriate bridges.
Fuse-links in accordance with IEC and UL
The DC line fuses have specially tailored, ultra-fast gPV characteristics. They can safely and permanently transfer nominal currents of up to 20 A at system voltages of 1500 V and protect lines against reverse currents in the event of an error.
Diode terminal blocks
The diode terminal blocks serve as string diodes and are used in thin-film photovoltaic systems for protecting against reverse currents. This means that the often sensitive thin-film modules are ideally protected to provide long-term stability.
Disconnect terminal blocks
The disconnect terminal blocks provide the option of disconnecting for maintenance and repair work. Once the photovoltaic system has been switched off, a single line can be disconnected via the disconnect terminal block.
Maximum wiring space
In photovoltaics, cables with double insulation are used on the DC side. Cables with an external diameter of up to 7.5 mm can be easily inserted through the cable entry funnel that is only open on one side.
Potential collective terminals
Potential collective terminals are available for fast and space-saving interconnection of individual strings. The output side uses up to 50 mm² of conductor in a screw clamping point.
Terminal blocks from 1000 V DC
Cables with larger cross sections are used for connections between SCBs and inverters due to their higher currents and longer cable lengths. The PTPOWER … UKH ... and RBO ... terminal blocks are able to accommodate conductors up to 300 mm². A comprehensive range of 1000 to 1500 V DC terminal blocks is available.
Requirements of terminal blocks for use in photovoltaic applications
Although standard products can generally be used in the AC area of solar systems, a more specific approach is required for the DC area. In order to keep cable losses to a minimum, PV panels are connected to strings, thereby increasing the system voltage.
Off-load voltages of PV systems can be up to 1500 V DC.
These high DC voltages place particular demands on the components used. In contrast to AC voltage, the DC voltage that is present enables creepage distances to be created very easily on the surface of insulating elements. As a result, the components used in this area must have greater air clearances and creepage distances.
The individual strings are protected in order to limit reverse currents, which can occur in the event of a short circuit. This preferably takes the form of 10.3 × 38 mm fuses in crystalline modules, and blocking diodes incorporated into the circuit in thin-film modules.
Terminal blocks and fuses from Phoenix Contact meet the special requirements of photovoltaic systems. You will find a summary of all components in the “Components and systems for photovoltaics” brochure.
Reliable protection for crystalline and thin-film PV panels
Crystalline modules are characterized by a very high level of efficiency with good light conditions. These offer significantly higher line currents in comparison to the thin-film modules. The compact fuse terminal blocks protect PV cables against dangerous reverse currents.
Compared to crystalline modules, thin-film modules perform more favorably with less light and are more sensitive to reverse currents. Block diodes connected in series are often used for fast and reliable protection in the case of reverse currents.
UBAL universal terminal blocks for aluminum conductors
The new UBAL Al/Cu series of terminal blocks has been tested in accordance with the latest standards and is particularly suited to applications such as photovoltaics.
These universal terminal blocks make it possible to wire aluminum conductors and copper wires together in the same terminal block.
Al/Cu terminal blocks are available in four cross-section sizes and can therefore be used for the connection of aluminum conductors from 6 mm² to 240 mm² and copper wires from 2.5 mm² to 240 mm².
High-quality aluminum alloy
The metal parts of the Al/Cu terminals are produced from high-quality aluminum alloys. A lead-free tin coating on the clamping parts and screws enable aluminum conductors and copper wires to be connected. The terminal points are able to accommodate both rigid and multi-stranded conductors.
Pre-lubricated contact chambers
The terminal points are already coated with an antioxidant, simplifying the aluminum conductor mounting process. Another advantage of the pre-lubricated contact chambers is the maintenance-free contact point, since it does not need to be retightened.
Top quality
The UBAL Al/Cu terminals are certified for the connection of aluminum conductors in accordance with EN 61238-1 (Class A). Furthermore, they are approved in accordance with IEC 60947-7-1 and are suited in particular to applications such as photovoltaics. Therefore, these terminal blocks are tested for an operating temperature of 90°C.
High level of safety
The touch-protection caps cover the clamping space and the screw opening of the Al/Cu terminals. This prevents the metal parts from touching inadvertently and ensures that the terminal points remain closed.
Large-surface marking option
A large area of the universal terminal blocks can be marked, thus enabling clear wiring.
Convenient mounting
The Al/Cu terminals can be mounted on the 35 mm DIN rail or directly on the mounting plate. Only the UBAL 240 is suitable for direct mounting alone, thanks to its high tightening torque.
Simple mounting of conductors
Allen screws reliably transfer the various torques for aluminum conductors and copper wires.
Lever-type fuse terminal blocks for photovoltaics UK 10,3‑HESI
Fuses can be replaced quickly and easily, thanks to the fuse levers, which are actuated from the front.
The lever-type fuse terminal blocks of the UK 10,3-HESI 1000 V and UK 10,3-HESI 1500 V series have been optimized to meet the demands of photovoltaics. They have been qualified in accordance with the latest standards (IEC 60947-3, IEC 60269-2, IEC 60269-6) and are UL listed. The UK 10,3-HESI terminal blocks are easy and safe to use. The fuses can be replaced quickly and easily, thanks to the levers, which are actuated from the front.
The 1000 V variant enables you to save even more time with versions featuring a visual display. In this case, the defective fuse is indicated by an LED.
Not only are the UK 10,3-HESI devices easy to use, they also boast a touch-proof design, which guarantees a high degree of safety.
PHOENIX CONTACT
GmbH & Co. KG
Flachsmarktstraße 8
D-32825 Blomberg
D-32825 Blomberg
+49 (0) 5235-3 00
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