A system, comprising: a load-regulation assembly configured to regulate flow of electrical power from a line-power terminal ; and a load-disconnection assembly being configured to disconnect the flow of electrical power from the line-power terminal for the case where the load-regulation assembly fails to regulate the flow of electrical power from the line-power terminal. The isolation circuit comprises a first diode coupled between a power supply of the first component and an output of the isolation circuit. The main areas of application of the invention are biotechnological production of pharmacological active ingredients and therapeutic agents as well as transplantation medicine. A removable enclosure lid is received by the housing.