Construction distribution board 16A 32A protected with circuit breakers 4x230V Doktorvolt DV-2107-D

Complete power supply for the construction site

The DV-2107-D distribution board is a ready-to-use distribution device designed for construction sites, workshops, and anywhere safe power from multiple circuits is required simultaneously. A complete installation—from power sockets to overcurrent protections and factory wiring—is enclosed in a single surface-mounted technopolymer housing.

Housing, mounting, and environmental resistance

The housing, with dimensions 360 × 250 × 125 mm, is made of technopolymer—an impact-resistant and corrosion-resistant material typical for industrial distribution boards. The front plate is gray RAL 7035, and the back plate is black. The door is made of polycarbonate, and an EPDM rubber seal ensures the tightness of the entire unit. Stainless steel mounting screws guarantee the durability of connections even with frequent opening.

The IP44 protection rating means the housing is sealed against solid objects above 1 mm and protected against water splashes from any direction—sufficient for outdoor work under a roof or in damp technical rooms. The single-row housing for 12 modules is mounted directly onto a wall or other vertical surface—it does not require a niche or recessed preparation. The set includes mounting screws with masking caps and a PG-16 cable gland, allowing for the introduction of power cables without additional accessories.

Power sockets, Schuko, and factory overcurrent protections

The following are mounted on the front plate of the distribution board:

• 1 power socket - type 1385, 5-pole, 16A / 400V, IP44,
• 1 power socket - type 3451, 5-pole, 32A / 400V, IP44,
• 4 single-phase sockets - 230V / 16A, Schuko plug (2P+E), IP54.

The power sockets allow for the direct connection of heavy construction machinery—concrete mixers, welding generators, or compressors. The four Schuko sockets will serve smaller power tools, work lighting, or chargers. Each socket has its own overcurrent circuit breaker:

Circuit	Protection	Characteristic
32A power socket	C32, three-pole	10 kA
16A power socket	C16, three-pole	10 kA
Schuko sockets (2× 2 pcs.)	C16, single-pole	10 kA

The C-characteristic breakers were selected to withstand the inrush current of electric motors without unnecessary tripping, while simultaneously reacting to short circuits and installation overloads.

The wiring is made of H07V-K conductors—flexible strands with a cross-section of 2,5 mm² (neutral and phase) and 4 mm² (protective earth (yellow-green)). The main busbar is model 3F / 8M / 12 mm² with a complete set of caps.

Standards and operational parameters

The distribution board meets the requirements of the IEC 61439 standard regarding low-voltage switchgear assemblies and the CPR construction directive. The overcurrent breakers are certified according to CSN EN 60898 and SN EN 60947-2 standards and hold EFS, EFC, and VDE approvals. The product complies with the CE directive, RoHS restriction of hazardous substances, and the manufacturer's quality management system according to the ISO 9001:2015 standard.

The short-circuit strength of the device is ≤ 10 kA. The load diversity factor (RDF = 0,8) allows the designer to estimate the summation of power from individual circuits when selecting a supplying transformer or generator.