King switch is a major disconnect, could be also termed 'king breaker'
Queen switches are secondary switches controlling sections of loads, possibly terminology passed over to use as 'Queen's breaker' ?
Never heard the term 'Queens breaker' specifically, but have heard the term 'queen switch' used many years ago.
In my grandmothers house wired in 1913, the king switch was a double pole knife switch , that was followed by a single double pole ceramic holders that fed ALL the K&T wiring, the ceramic block had terminals to install a piece of solder to function as the fuse.
Have also heard the term 'keystone fuse' used for the service entrance fuse. The old double pole ceramic block from grandma's house I have shows a keystone shaped symbol with a 'mPc' logo and a '1184' part number.
"Queens breaker" may be a local rendition of the above terminology.
I also did a 2 minute bing and google search for 'queen+ knob and tube' etc, did not find any specific non-brand generic 'queens breaker' reference .