Ceramic wirewound Resistors

Salient features

  • Power 180W - 5kW
  • Overload factor [email protected]
  • Working voltage 400 - 850V
  • Dielectric strength 50Hz 1 min. 2500V
  • Protection degree IP20/IP21
  • Natural air cooled

Datasheet

Description


Sigma resistors comply of one or multiple ceramic wirewound resistors fitted with a protection grid and optional connection box and or thermal switch. The ingress protection can be IP00 or IP21. Nominal power ranges from 180W till 5kW.

On request a UL approved version is available.

 

wirewound coated sigma brake resistor

Salient features

  • Power 17W - 1kW*
  • Overload factor [email protected]
  • Working voltage 270 - 5700V
  • Protection degree IP00
  • Natural air cooled / ventilator cooled

* power rating with natural air cooling

Datasheet

Description

Ceramic Wirewound resistors are build up from a ceramic core where a resistor wire in wound on. The are offered in various diameters ranging from 10 till 55mm and lengths from 44 till 590mm. The resistor has either a round or flat oval shape. Coating can be cement or vitreous enameled. These kind of traditional resistors are well proven and very cost effective. Applications are charging and de-charging resistors, brake resistors for small drives systems, snubbers in controlled and uncontrolled rectifiers.

 

wirewound coated sigma brake resistor

Contact us:

Naesbyvej 20
2610 Roedovre
Denmark

+45 3673 2222

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