SYSTEMS, APPARATUS AND INSTRUMENTS FOR ELECTRIC POWER DISTRIBUTION, CONDUCTING, SWITCHING, TRANSFORMING, ACCUMULATING, REGULATING OR CONTROLLING ELECTRICITY, NAMELY, EMERGENCY-STOP BUTTONS, EMERGENCY-STOP SWITCHES, DOOR SAFETY SWITCHES, SAFETY RELAYS, CONTACTORS, CONTACTOR RELAYS, SIGNAL TOWERS AND ACOUSTIC INDICATORS, CONTROL CIRCUIT DEVICES, ELECTRONIC AND MECHANICAL POSITION SWITCHES, ELECTRONIC PROXIMITY SWITCHES, PRESSURE SWITCHES, SAFETY POSITION SWITCHES, COMPACT CONTROL SYSTEMS CONSISTING OF ELECTRICAL CONTROL RELAYS, CONTACTORS, MOTOR PROTECTIVE SWITCHES, ELECTRICAL RELAYS AND CIRCUIT BREAKERS, CONNECTED BY BUS SYSTEMS
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