The BUF8600 buffer modules are part of the SITOP PSU8600 modular system and are designed to bridge short-term power failures. They are equipped with maintenance-free electrolytic capacitors as energy storage units and automatically take over the DC power supply in case of a line voltage failure. You can connect up to two BUF8600 buffer modules to the PSU8600 basic unit. Connection takes place on top of the modules without any wiring by means of the System Clip Link, a connecting plug for system data and power supply.