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PBR20 Low voltage cell



Explosion-proof switchgear, Ex d I certified, low voltage up to 1100V 50/60Hz and two protected outputs adjustable up to 400A.




It consists of a single compartment closed by a bolted door and the electrical equipment consists mainly of the following elements:

  • Continuous insulation control with two warning levels and one trigger level, with the possibility of testing, continuous reading of insulation resistance and optical fault indication.
  • Two 400A circuit breakers with thermal magnetic protection.
  • Optionally, two monitoring circuits with open contactor isolation. "lockout".
  • Un relé “localizador de defecto”.
  • A transformer high temperature protection relay in connection with thermal sensors on the low voltage coils.
  • Signalling of consumption and defects.
  • An overvoltage limiter.
  • Electrical interlocking circuit with high voltage cell

It can be mounted on a transformer directly or independently of it, by means of an input box.


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Aenor Empresa Certificada MackinaWestfalia IQNET