They call it a Microswitch , but it's a big switch that has a coil

The coil is 28 volts DC to turn it on , energize it

I don't understand why would a design or circuit want a switch to have a coil to ENABLE the switch

Any reason why?

Here is 3 things that I don't understand
1.) Hold Voltage?
2.) Drop out voltage?
3.) Steady State limit?

What does these terms mean?

Why would you want a switch to have a hold voltage?
Why would you want a switch to have a drop out voltage?
Why would you want a switch to have a steady state limit?

 

I think the switch brand name is called Microswitch

It need 28 volts applied to the internal coil inside the switch to make the switch work

 

SPDT plus a Coil

If you don't energize the coil, the Switches doesn't work

My question is why would anyone want a SPDT or DPDT switch that has a coil to be enabled or energized to work?

You have to manual flip the switch but it has to be enabled / energized to make it work in both positions of the switch

 

I think his switch turned into a relay so the switch question is done.