Discover the essential of M.S. RESISTANCES

Worldwide Customersworldmap Click on the map above to see some places where our resistors are installed
Our designs are already approved by:

About us


1999: Established in Dijon, France.
2001: Headquarter transfered to Saint Chamond, France.
2001: Factory in Saint Chamond, France.
2001: Designing, manufacturing & type testing of IP55 NGR (World Performance record).
2006: Extension of Saint-Chamond factory.
2007: Certification ISO 9001:2000.
2010: Certification ISO 9001:2008.
2010: Designing & type testing of 100 kV, 140 kA/3sec offload air blast single pole disconnecting switch (motorized).


Designing, Development, manufacturing, Testing & Servicing of:
- Neutral Grounding resistors up to 150kV & 3000A.
- AC & DC Harmonic Filter Resistors for filtering,  Static VAR compensation (SVC S/S).
- AC & DC harmonic Filter resistors for high voltage direct current (HVDC Plant).
- High & Medium Voltage Load Bank up to 320 MW.
- Starting or braking resistors for asynchronous motors.
- High voltage, single or triphase disconnecting switches up to 500 kV, 5000A & 140 kA/3sec.
- Contactors.


M. S. Resistances uses the latest software for electrical & mechanical calculation & for drawings.
We have developed a Computer Aided Resistor Design software (CARD) using mechanical, electrical, mathematic basic formulas & experimental data based on tests made in our laboratories.


Power Resistor Laboratory:
Power testing up to 400 kW
Power frequency testing up to 150 kV one minute at 50 or 60 Hz
Lightning impulse testing up to 550 kV

Find all our quality chart, tests & certifications in quality page

(Click on the customer's name to see reference letter)

They rely on us ...
ABB, Alstom, Al-Toukhi, Areva, Cairo organization, Chiyoda, Converteam, Elenet, Enertelindo, Hikari, Fuji, Meidensha, Mitsubishi, Koncar, Meiden, Nissin, Pauwels, Powercap, Siemens, Toshiba, VaTech, Woodward SEG, Wartsila