2 November 2025
A distribution board on a construction site, in a workshop, outdoors or in a temporary hall must above all be safe, durable and ready for operation immediately after connection. The JUN series from Doktorvolt was developed precisely with this in mind – easy handling for the investor and full compliance with standards for the electrician.
What exactly is a JUN distribution board?
For the investor:
It’s a ready-to-use distribution box with 400 V and 230 V sockets – just connect and start using it. No need to assemble components separately – the entire unit comes pre-assembled and protected.
For the electrician:
Prefabricated distribution boards with circuit breakers, three-phase and single-phase sockets (Bals brand), H07V-K wiring and enclosures with IP44 or IP54 protection. Compliant with IEC 61439, TÜV and ISO 9001 certified.
Where are JUN distribution boards used?
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construction sites and renovation projects
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mobile workshops, garages, service companies
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office containers and social facilities
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power generators at events
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halls, warehouses, temporary installations
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gardens, plots, houses under construction
Whenever several devices need to be powered in the field, the JUN distribution board does it safely – without hassle and without improvisation.
Why do investors and contractors choose the JUN series?
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Ready-to-use solution – everything included: sockets, protection devices, wiring
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Resistant to outdoor conditions – IP44 or IP54 (rain, dust, frost down to –25 °C)
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Certified safety – compliant with CE, IEC 61439, TÜV, ISO 9001
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Different socket configurations – e.g. 1×32A, 1×16A, 2–4 sockets 230 V
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High-quality components – Bals, Doktorvolt, proven materials
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Easy surface mounting
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No extra paperwork – just install and use
What should an investor know?
JUN distribution boards are delivered ready to use – no hidden extras, no hassle.
Choosing is simple: just pick the number of sockets and the power supply (230/400 V).
Quick to set up – any electrician can install it straight away.
Built for tough conditions: IP54 keeps out moisture and dust.
Intuitive choice – the configuration itself shows what you need, no technical expertise required.
What should an electrician know?
Integrated circuit breakers (C16 / C32) matched to the socket type
Rated current capacity between 64–80 A, depending on the model
High short-circuit resistance: Icc up to 6 kA
Reliable operation from –25°C to +50°C
Safe and durable wiring: H07V-K (1.5 / 2.5 / 4 mm²)
Equipped with PG21 / PG29 cable glands
Compact housings, 223–310 mm in height, tailored to each variant
No modifications required – the ready-made prefabricated units meet acceptance standards.
Most popular JUN series configurations:
Each model comes with factory-installed protections, appropriate cable cross-sections, and PG cable glands for a secure and tight cable entry.
How to choose the right JUN model?
Just consider 3 things:
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What current will be needed? (e.g. welding machine, concrete mixer, lighting, heaters)
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How many devices will be connected at the same time?
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Will the work take place outdoors, in dust or moisture? (IP44 or IP54)
You don’t need to design protection layouts yourself – they are already selected and clearly described.
Summary
The JUN series by Doktorvolt is designed for those who:
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don’t want to waste time collecting individual components,
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need a sealed and safe distribution box ready for immediate use,
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value certified components,
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require compliance with standards and approvals,
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are looking for a solution for construction sites, outdoor areas, or workshops.
It’s equipment that investors instantly understand – and electricians instantly approve.
