A front accessible metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., and bus bars in predetermined positions for allowing front access to the electrical components and bus bars. The front accessible switchgear assembly further comprises a plenum chamber rearwardly positioned in the electrical enclosure and in communication with the compartments to provide an exit path for releasing pressure and gases. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components. The mounting block assembly is configured to reduce temperature rise in the compartments. Fuse sleeve assemblies operably connected to the control power transformer and the potential transformer allow high voltage primary connections in the electrical enclosure.