Polyamp AB

Polyamp Power division is specialised in DC-DC converters and power supplies. We design DC/DC converters since 1970-ties, with reputation of very high reliability and electical performance, they are used in systems with high demands.

Polyamp Systems Division are specialised in design of Naval electromagnetic signatures supression for international customers in Navies or shipyards. We also produce a Underwater Electric sensor (UEP) which is mainly used in Naval and in Oil exploration applications.

Polyamp AB is ISO 9001:2008 Certified  >> pdf ISO 9001:2008 Certificate (268 KB)


Power Division


Polyamp Power division specializes in design and production of mainly DC/DC converters and some compatible Power supplies. Our DC/DC converters are used in applications demanding high reliability in rough environments. Thru the years countless applications in sectors like Railway, Energy, Process control, Vehicles, Military, Radio and Telecom etc.

We provide our DC/DC converters to customers worldwide, with an established sales distributor network or directly where we do not have a distributor. Polyamp have three locations; the head office in Sollentuna outside Stockholm, Sweden. We have design and manufacturing of DC/DC converters in Åtvidaberg 230 km south of Stockholm and La Chaux-de-Fonds in Switzerland.

In Sweden we complement our range with high quality brands like Delta Elektronika for Laboratory and power supplies and Powernet for Power supplies, Inverters and special applications power solutions.

System Division


The Systems division of Polyamp specializes in the design, manufacture and supply of Underwater Electromagnetic Signature Management and Control Systems for Worldwide application within the International Naval Industry / International Navy authorities.

The type of systems supplied are Advanced Degaussing systems for surface and submarine naval vessels. Electromagnetic Mine Sweep supply, Underwater Electric Potential (UEP/ELFE) sensors and electomagnetic design and measurment systems.

The SWECADE software can predict and design coil systems, dimension Degaussing systems, control fixed and movable ranges, support signature analyse and document the fleet vessels signature history.

48 V DC/AC inverter Telecom systems 1 kVA - 27 kVA

Powernet DAC60000 dual series

inverter_custom2 Powernet program of modular Inverters intended for Telecom applications, using 48 V or 60 V battery supply. The inverter system can be dimensioned from redundant N+1 system 1500 VA up to 27 kVA. The system can be fed mainly from the grid and via a AC/AC static switch switch over to battery supply without delay. Additional modules for fuse distribution is also available. The system is modular and pluggable. The system can be remotely status monitored locally or via Internet.

inverter dual

Double inverter module in 19" 1.5U
with 2 pcs DAC62434FR.
Those are base models for desingning Telecom system solutions.


inverter_custom inverter_custom_rear inverter_custom2
7500 VA Inverter system with
Static switch, Manuel switch
2 x 100 A common DC 48 V input
40 A DC MCBs for each modulel
7500 VA Inverter system
View over back panel
4500 VA Inverter system with
3 x ADU68130 19" 1.5U subrack
3 x 1500VA Inverter system with
18 x AC outputs MCBs



  • One stackable 1,5U 19"-rack unit 3 kVA
  • Two 19"- rack modules makes 6 kVA in a 3U 19"-rack unit
  • System power from 1 kVA to 27 kVA
  • 48/60Vd.c. input, 115/230 Va.c. output
  • Moduls can be parallel connected
  • Redundant N+1 system
  • Can be grid fed using a static switch or direct from battery.
  • Static switches 7.5 kVA or 30 kVA
  • Software for remote status control
  • Practical MTBF better than  600 000 h


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