Equivalent sequence/stepper relay to “FINDER – 20.21.9.012.4000”

I am currently looking at this relay: FINDER – 20.21.9.012.4000. Which is step relay, that makes contact AC output active with coil input DC (12V) [which i need]; and disconnects output when coil is triggered again. Which works like this GIF animation: http://www.homofaciens.de/bilder/technik/relay_002a.gif.

Q1: It says that Un=12VDC (coil input), coil resistance R=27Ω and current over the coil must be 400mA. Have I read this data correct? —Coil specifications, PDF, page 2— So if I needed to switch 16x same relays at the same time, input current consumption would be 7A?

Q2: Where in the specification is the info, that tells me how much time must the coil be on high state, to activate/trigger the contact output?

This relay is kinda expensive for me, since I need around 30 pieces…

Q3: Does it exists equivalent relay, that is described, which:

• contact doesn't need to have 16A output, it can easily have max 1A, since burden will only be simple lights, that will probably have max 0,5A consumption;
• I need DIN-rail package, but it can be for PCB, and I will find PCB to DIN-rail socket (example);
• and has some kind of reasonable coil current.

Thanks