In a Convection Cooled Power System, you will find RT4B convection cooled (no fans) switched mode rectifiers operating in parallel. Whilst fans can be optionally installed in the system, it is typically used without one to maintain a low audible noise environment suited to telecommunications and switch rooms.
The RT4B module is a 1.4kW convection cooled switched-mode rectifier. The low noise and high reliability make it ideally suited to telecommunications and switch room environments. Designed for use in conjunction with a battery to provide an uninterruptible DC power system (UPS). The addition of a MCSU-4 controller allows a sophisticated power system to be built with network connectivity and remote asset management features.