Four-channel amplifier 4XD300

Power amplifier for the voice alarm system VARIODYN D1 in class D technologies with four independent
power channels and galvanic isolated 100 V direct outputs, symmetric inputs, inrush current limitation and
soft start. In comparison to our 4XDxxxB series amplifiers, one amplifier can back up another amplifier.
Four built-in fans with smooth temperature controlled speed control.

  • Built- in electronic protective circuit against thermal overload, DC signals, sub frequent signals, short circuit, open outputs and HF interference
  • Individual status LEDs indicate channel CLIP, PROTECT, SIGNAL, POWER, LINE and 24 V DC power Back switch contact for sequential remote power
  • 2 back fault message contacts
  • Back fault message contact for missing 24 V emergency power supply
  • 24 V emergency power supply input
  • Suitable for use with loop technology