Galvanic isolator for EX i-approved detectors connected to the detector loop. For up to 20 detectors. An external 24V DC power supply is required.

BZ-500 is a barrier unit designed for the intrinsically safe installation of detectors in hazardous area zones 0, 1, or 2. The barrier is a galvanic isolator; hence the installation requires no PE conductor.

BZ-500 must be installed in a safe area and is connected to the Al_Com detector loop. Also, a separate 24 V supply is required. If BZ-500 is supplied from the panel, an optional 24 V DC/DC converter must be used to regulate the power.

The loop branch off into the hazardous area accepts 1-20 loop units depending on cable type and loop unit type. All loop units must be Exi-approved.

Part number: 116-BZ-500