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?
construction sites and renovation projects
mobile workshops, garages, service companies
office containers and social facilities
power generators at events
halls, warehouses, temporary installations
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?
Ready-to-use solution – everything included: sockets, protection devices, wiring
Resistant to outdoor conditions – IP44 or IP54 (rain, dust, frost down to –25 °C)
Certified safety – compliant with CE, IEC 61439, TÜV, ISO 9001
Different socket configurations – e.g. 1×32A, 1×16A, 2–4 sockets 230 V
High-quality components – Bals, Doktorvolt, proven materials
Easy surface mounting
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:
What current will be needed? (e.g. welding machine, concrete mixer, lighting, heaters)
How many devices will be connected at the same time?
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:
don’t want to waste time collecting individual components,
need a sealed and safe distribution box ready for immediate use,
value certified components,
require compliance with standards and approvals,
are looking for a solution for construction sites, outdoor areas, or workshops.
It’s equipment that investors instantly understand – and electricians instantly approve.
