Industrial switchboards and distribution boards in Seville, Spain

Industrial switchboards in Seville: design, assembly and commissioning

The switchboard is the heart of any warehouse or factory. It decides whether the machines start, whether a fault stays isolated and whether anyone gets a fright when they open the door. We build custom industrial switchboards in Seville, Spain and its metropolitan area, from a sub-board for one production line to the main low-voltage switchboard of a whole warehouse, with diagrams, labelling and documents.

We also work on what is already there: extensions, reorganising outgoing circuits, replacing obsolete switchgear and boards that run hot or trip for no clear reason.

Which switchboards we build

• Main low-voltage switchboard, at the entry to the installation, with the main protection and distribution to the sub-boards.
• Distribution sub-boards by zone: production, storage, offices, lighting, air conditioning, refrigeration.
• Control panels for machines, pumps, compressors, fans, doors and conveyors, with contactors, relays, timers or a PLC.
• Pump panels with dry-run protection, pump alternation and alarms.
• Panels with a variable speed drive or soft starter for large motors, as we explain in motors and variable speed drives.
• Panels with a PLC and touch screen, when the process calls for it. See automation and PLC.

How we design an industrial switchboard

1. Loads and diversity. We start from the list of loads, their power and how they run at the same time.
2. Protection and breaking capacity. Each breaker is chosen for the current of its line and the short-circuit current that can occur at that point.
3. Selectivity (discrimination). Protection devices are coordinated so that, in a fault, the one nearest to it trips and not the main breaker.
4. RCDs by group, with the sensitivity and type suited to each kind of load (motors, drives, electronics).
5. Enclosure and ventilation. Protection rating for the environment (dust, damp, outdoors) and spare space to extend.
6. Diagrams and labelling. Every outgoing circuit identified and the single-line diagram kept inside the board. If your warehouse has no up-to-date drawings, we survey them as in single-line diagrams.

Regulations

• UNE-EN 61439: design and verification of low-voltage switchgear assemblies.
• Low Voltage Directive 2014/35/EU: CE marking of the switchboard.
• ITC-BT-17: main and individual control and protection devices.
• ITC-BT-04: whether the warehouse installation needs a project signed by a qualified engineer.

When to replace or extend the switchboard

• You have bought new machinery and the board has no room or cannot take more load.
• The board runs hot, smells of burning or has discoloured switchgear.
• Breakers trip for no obvious reason, or the main breaker trips because of a fault on a single machine.
• The switchgear is very old and spare parts are no longer made.
• There are no diagrams and nobody knows what each breaker protects.
• An inspection or your occupational insurer (mutua) has flagged safety defects.

Before you decide, a thermal imaging survey of the board with the warehouse working shows which connections and breakers are under stress.

Switchboards for warehouses on Seville’s industrial estates

We work on the industrial estates around Seville, such as PISA in Mairena del Aljarafe, La Isla in Dos Hermanas, Fridex in Alcalá de Guadaíra, Calonge, Store, Carretera Amarilla or El Pino. They are warehouses with three-phase supplies, machinery that grows with the business and, very often, boards assembled in stages with circuits added in no particular order. A well-designed board there is not a luxury: it is what keeps the shift running when something fails. If the warehouse is being fitted out from scratch, we integrate it into the warehouse electrical installation.

How we work

1. Visit, or you send us the diagrams: we see the installation, the loads and what you need.
2. Technical proposal with single-line diagram, switchgear and enclosure.
3. Fixed quote and assembly time.
4. Assembly and wiring in the workshop or on site, depending on size.
5. Replacement or connection in the warehouse, in a slot that does not stop production.
6. Tests and measurements, with handover of diagrams and documents.

Guide prices

To keep the board in good shape after installation, see industrial maintenance. More rates on our prices page and the rest of our services under business and industry.