Can anybody explain the in/out signal flow of EL 215 147A F7098(M302 J2A HM-10) Relay on

coil excitation ?
I cannot find these relays on Google.

 

Looks like a regular DPDT (also known as a 2 Form C) relay with an extra connection off A2. When the coil is energized A1 and A2 are connected and B1 and B2 are also connected.

 

I got its schematic....But can't get the idea....




[img=http://s11.postimage.org/m6uqcwwrj/RELAY.jpg]