Marine electrical installations

Instrumentation Electricidad, SA (IESA) is specialized in electrical installations for marine sector. Our history over 24 years is responsible of we consider ourselves true experts today.

We are an installation company that helps you with your marine electrical installations adding detailed engineering

In Instrumentation Electricidad, SA (IESA) we successfully performthe maintenance and installation of complete electrical systems for a large number of companies in the sector. This is reflected in our methods and results.

We have acquired much skill in performing this type of work and we believe the best way to keep customers satisfied is giving them a complete service.

In this way, our customers only have to worry about enjoying their installations once we have completed the maintenance work or installation on them.

We are official suppliers of Fireseal AB, Enertronica Santerno and Jowa AB. We are official service agent on the peninsule for VAF Instruments BV and Schaller Automation GmbH. We also have the support of Terasaki Electric Europe Ltd.

We mentioned that our customers need not to worry about anything and this is a premise that we meet in all the projects we do. To make this possible, we need your previous collaboration, we need to know what you want or do not want in your installation and need to understand your requirements in order to begin working on your project.

Our installation may include or not, as desired, supply of transformers, lighting equipment, internal communications, fire detection systems, alarm systems... all your choice!

Main Circuit Breakers test:

At IESA we are compromised with the good working of vessels electric power plant. Because of this, between most usual works we normally carry out on board are electric equipment and motors maintenance/overhauling, and so tests required by different classification societies.

Among these tests we would highlight main Air Circuit Breaker tests (ACBs), normally located on Main Switchboard (MSB)

In order to cover a wide range of circuit breakers, either on range (in amperes) as on different manufacturers, we have developed a portable equipment able to provide real current up to 6000A. Having this equipment, IESA is ready to test circuit breakers trip on almost every circuit breaker in the market.

We do not only have the capability, but we also have certified our procedure and equipment by our quality system, having this certified by Bureau Veritas under ISO 9001:2015.

FireSeal AB:

We have recently obtained agreements with FireSeal AB, for official distribution partnership in Spain, this being a leader in supply of sealing systems for cables and pipes penetrations through bulkheads and decks. All its products are certified by the major marine classification societies.


We have recently expanded the number of approved service agencies in Instrumentation Electricidad, SA (IESA). This include JOWA AB, recognized worldwide manufacturer of equipment for water treatment for the marine sector.

Its products include alarm 15ppm bilges (Seaguard) and the Oil Discharge Monitoring Equipment (ODME-2005) and full treatment equipment as bilge separator, reverse osmosis unit, freshwater, etc.

Feel free to stop on our contact section and request an estimation quote for your project, because we are available for you.