Yes, that is a grid switch.
I can't help but wonder why you have that configuration.
As you look at the front picture the switch on the left, what does it operate? You must also have
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One of these to operate it (It is commonly known as a Fish Key)
The "good news" is that as it is a grid switch, you can change the parts to what swmbo requires
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Above is an example of a matt black grid switch
You should buy a replacement switch that is suitably rated for what it is going to switch. Only a guess, but do both switches operate "normal lights" (I still wonder about the left switch, haven't got an emergency light have you?)
There are multiple grid switches available, the ones pictured came from TLC