Where are powercon products made? Powercon Corporation, located in Severn, Maryland, manufactures quality Metal-Clad and Metal-Enclosed Switchgear as well as a variety of other products serving the needs of the electrical industry.Why choose powercon? Metal-Enclosed Switchgear as well as a variety of other products serving the needs of the electrical industry. serving the needs of the electrical industry. Since its inception in 1959, service and dedication to our customers’ needs has shaped the level of excellence provided by Powercon.What is inside a powercon switchgear line? Thank you for your interest and visit to the Powercon Web Site. Powercon’s advanced Metal Clad Switchgear line is completely factory-built and wired. Each cubicle may contain the circuit breaker, bus bars, primary and secondary disconnecting devices, instrument transformers, instruments and relays, secondary wiring and more.What is powercon key interlock system? The Powercon Key Interlock System is a simple, easy method of applying inpidual key interlock units and assemblies to electrical switchgear assemblies requiring operation in predetermined sequence.