Hi Santosh,
I don't think you can activate a switch unless you activate an Business Function. As per this link
http://help.sap.com/saphelp_nw04s/helpdata/en/af/e8b540afc87c2ae10000000a155106/frameset.htm
By switching on a business function, you switch on all switches assigned to it.
And as Shobhit Srivastava had mentioned The business functions can be reversible and non-reversible. Only reversible business functions can be switched off. So take care before you switch it on.
I think SFW1 is used for creating switches.
Also if you check the Business Function in SFW2 it has the information of weather switch will be activated or put into stand by up on activation.
In this case( Business Function UI_FRW_1 ) the switch WCF_EHP1_SWITCH will be activated.
Regards
Vinod