
Industrial socket box | 2×16 A 5P 400 V + 4×Schuko 230 V | IP44 | SEZ ROS 1605/S
Code: 44071SEZ socket box with 2×CEE 16 A 5P + 4×Schuko outlets, IP44 (outlets IP54). No MCBs or RCD inside – protection is installed in the supply board.
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Industrial socket box | 2×16 A 5P 400 V + 4×Schuko 230 V | IP44 | SEZ ROS 1605/S
SEZ ROS 1605/S – SEZ socket box with 2×CEE 16 A 5P 400 V and 4×Schuko 230 V 16 A. Enclosure protection – IP44 (outlets IP54).
Key point:
One box gives you several three-phase outlets plus 230 V domestic outlets for hand tools, lighting or chargers. There are no MCBs or RCD in the box, so all protection must be in the supply board.Outlets
2×CEE 16 A 5P + 4×SchukoProtection
IP44 (outlets IP54)Current
16 AProtective devices
noneHow it works
Supply: a 5-core cable (L1, L2, L3, N, PE) is brought in and connected to a terminal strip rated for cable up to 5×4 mm². A cable with plug is not listed in the manufacturer data – the installer selects it.
Outlets: the CEE 16 A 5P outlets receive all three phases, N and PE (400 V), while the 4×Schuko outlets get one phase, N and PE (230 V).
Protection: the box is unprotected (no MCBs or RCD). An MCB (not above 16 A) and a 30 mA RCD are installed in the supply board; IP44 (outlets IP54) applies only with the outlet lids closed.
Why choose SEZ ROS 1605/S?
One three-phase cable gives you both 400 V and 230 V outlets without a separate board. All outlets are 16 A, which makes line protection simple to select.Technical specifications
Product type Socket box Manufacturer / model SEZ DK a.s. (Slovakia) / ROS 1605/S Series ROS 16yy, unprotected version 400 V outlets 2× CEE 16 A 5P (3P+N+PE), 400 V, 6h 230 V outlets 4× Schuko 16 A 230 V Rated voltage 400 V~ / 250 V~, 50 Hz Protective devices None (unprotected version, no MCBs or RCD) Switch None Degree of protection IP44 (enclosure), IP54 (outlets), with lids closed Impact resistance IK10 (empty enclosure) Enclosure Plastic Supply connection Terminal strip, cable up to 5×4 mm² Ambient temperature −25…+40 °C (catalogue data) Standards EN 61439-3; CEE outlets to EN 60309-2 Total load not above the line breaker (≤16 A) Main functions
- 2× CEE 16 A 5P 400 V – for three-phase tools, compressors, mixers, heaters
- 4× Schuko outlets – for hand tools, lighting, chargers
- IP44 enclosure – protection against splashing water
- IK10 – impact resistance of the empty enclosure
- Terminals up to 5×4 mm² – supply cable sized to the line
- No modules – simple design, protection stays in the supply board
How does it differ from similar products?
SEZ ROS 1605 D (2224) Same outlet layout (2×16 A 5P + 4×230 V 16 A), IP44, with holder – for portable use. SEZ ROS 1603 D/S (591) 3×16 A 5P + 2×Schuko, IP44, with holder – more three-phase outlets. SEZ ROS 1601 (589) 4×CEE 16 A 5P, IP44, no holder – for three-phase loads only. SEZ ROS 4/V-12 (573) 1×16 A 5P + 2×230 V 16 A with 0–1 switch, IP44 – when outlets must be switched off locally. Where is it used?
- Garages and car service shops
- Workshops and production areas
- Farm buildings and barns
- Temporary power for repairs and events
- Construction work – fed from a site board
- Indoor and covered areas
Use by need
Beginner.
The box comes fully fitted – it needs a suitable cable and connection to a protected board. It is not an extension lead with breakers: leave the connection to an electrician.Experienced installer.
Use a flexible rubber 5-core cable (e.g. H07RN-F) sized to the line, not larger than 5×4 mm²; check phase sequence at the CEE outlets and PE continuity.Power engineer / designer.
The box is an end point without internal protection: overload and short-circuit protection (not above 16 A) and a 30 mA RCD are designed into the supply board. For sites – HD 60364-7-704.Practical use
In a car service shop the box is installed at the workstation: a three-phase compressor plugs into the CEE outlet, a lamp and grinder into the 230 V outlets. It is fed from the board through a 16 A MCB and a 30 mA RCD.Pros / advantages
- Three-phase and domestic outlets in one enclosure
- All outlets 16 A – protection is simple to select
- Simple design without modules
- IP44 enclosure and IK10
- Terminals for cable up to 5×4 mm²
Cons / limitations
- No MCBs or RCD – protection must be in the supply board
- No switch – for local switching choose SEZ ROS 4/V-12 (16 A) or ROS 4/V-10 (32 A)
- Total load of all outlets is limited by the line breaker (up to 16 A), as the outlets have no separate protection
- IP44 – not for continuous rain or water jets; outdoors it needs cover
Safety and installation notes
- ⚡ Connection and testing must be done by a qualified electrician, with the supply switched off.
- ⚡ There are no MCBs or RCD in the box: protect the supply line with an MCB sized to the cable, not above 16 A, and a 30 mA RCD. The total load of all outlets must not exceed the line breaker.
- If the supply line is single-phase, the CEE 400 V outlet must not be used – it will not have 400 V; feed the box from a three-phase 5-core line.
- The PE conductor of the Schuko outlets must be connected – check PE continuity to every outlet and phase sequence at the CEE outlet.
- On construction sites feed the box only from a site distribution board (HD 60364-7-704).
- IP44 (outlets IP54) applies only with the outlet lids closed and the cable entry tightened.
Quick selection guide
2×CEE 16 A 5P 400 V4×Schuko 16 A 230 VIP44 (outlets IP54) / IK10No MCBs or RCDSuitable when you need:- 400 V and 230 V outlets from one cable
- A simple outlet point without modules
- Work indoors or under cover
Check before choosing:- Is there a ≤16 A MCB and a 30 mA RCD in the supply board
- Is the cable 5-core and does it fit the cable entry (up to 5×4 mm²)
- Do the loads have CEE 16 A 5P and Schuko plugs
- Is a total load of 16 A enough
Important reminder: The box does not replace a protective board: it has no MCBs or RCD. All protection must be in the supply board.☝ Elsprendimai.eu recommends:- Combined socket box selection guide – socket types, IP ratings, cable and protection sizing, “wrong / right” diagram.
- Modular equipment – MCBs and 30 mA RCDs for the supply line.
- Industrial plugs and sockets – CEE plugs for connecting equipment.
- Copper cables – with the right cross-section for the supply line.
FAQ
Does the box contain MCBs or an RCD?
No. The manufacturer lists it as an unprotected version, so an MCB (not above 16 A) and a 30 mA RCD must be in the supply board.Which supply cable should I use?
A 5-core (L1, L2, L3, N, PE) flexible rubber cable, e.g. H07RN-F; the electrician selects the cross-section by protection and length. Terminals take cable up to 5×4 mm².Can it be fed from a single-phase line?
No. The 230 V outlets would work, but there would be no 400 V at the CEE 5P outlet. The box is intended for three-phase supply.How does the D version differ?
The D version has a holder for portable use; this version has no holder.What does /S mean?
In SEZ designations the letter S marks Schuko-type 230 V outlets.Can it be used outdoors or on a construction site?
The IP44 enclosure is splash-proof, but it needs cover from rain. On sites – only when fed from a site board with an RCD (HD 60364-7-704).Sources: SEZ DK a.s. product page (https://www.sez.sk/produkty/ros-1605/); catalogue K1.1 "Zásuvkové rozvodnice a bubny" (2017). Checked 2026-10-20.
SEZ ROS 1605/S – socket box 2×CEE 16 A 5P + 4×Schuko, IP44
SEZ ROS 1605/S – socket box (2×16 A 5P 400 V + 4×Schuko 230 V), IP44, no MCBs or RCD. Suitable for garages, workshops and temporary power supply.
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.ManufacturerThe IP protection class indicates the device's resistance to environmental factors.

The first digit indicates protection against dust and solid objects.
The second digit indicates protection against moisture.First digit values:
X — Untested;
0 — No protection;
1 — Protected against solid objects larger than 50 mm;
2 — Protected against solid objects larger than 12.5 mm;
3 — Protected against solid objects larger than 1 mm;
4 — Protected against solid objects larger than 1 mm;
5 — Dust protected;
6 — Totally dustproof.
Second digit values:X — Untested;
0 — No protection;
1 — Protected against vertically falling water drops;
2 — Protected against water drops falling at a 15º angle;
3 — Protected against rain falling at a 60º angle;
4 — Protected against water splashes;
5 — Protected against water jets;
6 — Protected against large amounts of water;
7 — Protected against short-term immersion in water up to 1 meter deep;
8 — Protected against long-term immersion in water up to 3 meters deep.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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