This is the generic class for devices, per se, of general applicationwhich are used for closing or opening electrical circuits and thecombination of these devices with their operating means. In thecombined devices there must be something more than the mere inclusionof a circuit maker or breaker broadly.
Combinations of circuit makers and breakers with electricalplugs, sockets, or other connectors are in this class.
This class includes devices known as "controllers", "circuit-closers", "switches", "circuit-breakers", "interrupters", "distributers", "thermal-cut-offs", "fuses",and "electrical thermostats".
Electrical systems or circuits are excluded from this class.These systems or circuits are classified in the various electricalor art classes, depending on the particular form of electrical systemor of the apparatus controlled.