Center City Commuter Connection Switching Stations

These indoor switching stations at 12th St., 18th St., and the Portal, located in Center City, were placed in service in 1984 (12th and Portal, as part of the Center City Commuter Connection project), and 1920 (18th St.). They each contain a mixture of circuit breakers, metal-enclosed motorized switches, relays, and control panels, all of which will be replaced as part of a near-complete upgrade of these switching stations.