4XD500 Four-Channel Power Amplifier

Esser’s 4XD500 four-channel power amplifiers are used for the voice alarm system VARIODYN D1 in class D technologies with four independent power channels and galvanic isolated 100 V direct outputs. It has symmetric inputs, inrush current limitation and soft start. In comparison to our 4XDxxxB series amplifiers, one amplifier can back up another amplifier. It has four built-in fans with smooth temperature controlled speed control. It has built-in electronic protective circuit against thermal overload, DC signals, sub frequent signals, short circuit, open outputs and HF interference. It has individual status LEDs indicate channel CLIP, PROTECT, SIGNAL, POWER, LINE and 24 V DC power Back switch contact for sequential remote power. It has 2 back fault message contacts. It is suitable for use with loop technology.

• 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