Base load modules ensure that a mains field relay is switched on when low-energy consumers are used. The base load adapter plug FS-GZ ensures that the mains field relay FSE 1 is switched on safely for consumers that are supplied via a socket and require a starting voltage equal to the mains voltage. Properties: easy installation in the socket to the consumer, toggle switch to force the FSE 1 to switch on, display of the FSE 1 switching status via indicator light, type of installation: adapter plug for earthed sockets, areas of application: the component is used in conjunction with the FSE 1.