----------------------------------- "Morgans" wrote:
------------------------------- It depends.
In the US, "plug-in" c'bkrs are used in residential load center panels while "bolt-on" c'bkrs are used in industrial panel boards.
As far as the c'bkr it self is concerned, both c'bkrs have the same operating innards.
Lew
The load connections on any breaker I've seen are always screw types, but the connection from the panel buss bar to the input of the breaker is often via a spring clip. (Square D type QO, for example.)
Depends on which part of the breaker you're talking about. The terminal where the branch circuit connects to the breaker is always a screw terminal, but the connection of the breaker to the bus bar is definitely a stab connection.
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