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HVR International GmbH

Booth number: H1.G19

About us

HVR International GmbH is a german, ISO certified producer of passive components.

HVR manufactures and sales SiC Varistors (CTPU's and Varistors for protection Relays) and Silicon metal resistors we also sell ZnO Varistors

The SiC disc and tubes are produced in Roethenbach and supplied all over the world.

Additional the HVR Group also produces the following product ranges:

  • Wire Wound Resistors by HVR Pentagon in Birmingham, UK

  • Carbon Ceramic Resistors by HVR International Ltd. in Newcastle, UK

Products and services

HVR Group manufactures the below listed passive components:

- Silicon Carbide Varistors

- Metal Oxide Varistors

- Si-Metal Ceramic Resistors

- Wire Wound Resistors

- Carbon Ceramic Resistors
Si- Metal Resistors

Si- Metal Resistors

The HVR Silico resistors have high power dissipation and high energy absorption. They are manufactured mainly as rods and tubes with varying sizes. The Silico Resistors may be connected in series or parallel for various fields of application. Over 90 years of Silico developement in our company. Our Silico Rod and Tube ceramic can bear the following temperatures:
Continuous 350°C
Short time 390°C
In case of failure up to 600°C

Silicon Cabide Varistor

Silicon Cabide Varistor

The HVR SiC varistors have good voltage dependences and high energy absorption. They are manufactured mainly as discs with varying sizes, as the required electric values are most easily obtained with these geometric dimensions.One of the most advantages of a SiC Varistor is the behaviour in the case of a fault. It has a self-healing characteristic and doesn´t shorten the circuit.

Anti-Condensation Heaters

Anti-Condensation Heaters

HVR Pentagon Anti-Condensation heaters have been designed for use in switch and control gear cubicles, where a low wattage heater is required to prevent condensation. They comprise a vitreous enamelled resistor mounted in a sheet steel case and having a removable perforated sheet steel cover. There is a cable entry grommet at each end and M4 terminal screws are provided on the resistor. Dimensions and power ratings for assembled resistors are shown in the Technical Specification.

News & Innovations

HIGH PERFORMANCE PRODUCTS  The SiC Varistors manufactured by HVR in Germany are tested to extrem high temperatures. The continous operating temp. can be above 200°C (short time up to 300°C) which increase the energy capability up to 140kJ per disc.
The Si-Metal Resistor range have a cont. operating temp. of up to 350°C
For Generator de-excitation we have designed a new range named „HP-System“ to allow a better current flow performance over the stack.


HVR International GmbH
Gruenthal 8
Röthenbach an der Pegnitz

Phone: +49 911 3765860
Fax: +49 911 37658615

Ralf Vespermann
Managing Director
Phone: +49 911 37658620

Hamid Nazar Malik Contracting Co.Ltd.
4th Fl. , Office No# 03, Abdul Aziz IBN Ibrahim Rd. AL – Safa District
21382 Jeddah
Kingdom of Saudi Arabia

Phone: +966 12 6752400
Fax: +966 12 6733829

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