Electrical reference directory

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IEC mechanical position-switch contact: bi-directional lever actuated - normally open with detentLS · Schematic IEC mechanical position-switch contact: four-directional lever actuated - normally closedLS · Schematic IEC mechanical position-switch contact: four-directional lever actuated - normally closed with detentLS · Schematic IEC mechanical position-switch contact: four-directional lever actuated - normally openLS · Schematic IEC mechanical position-switch contact: four-directional lever actuated - normally open with detentLS · Schematic IEC mechanical position-switch contact: limit switch normally closed - cam drivenLS · Schematic IEC mechanical position-switch contact: limit switch normally closed - events drivenLS · Schematic IEC mechanical position-switch contact: limit switch normally open - events drivenLS · Schematic IEC mechanical position-switch contact: limit switch, roller normally closedLS · Schematic IEC mode dependency (M)Mm · Schematic IEC motor-starter form: motor starter 1 pole normally closed (power)KM · Schematic IEC motor-starter form: motor starter 1 pole normally open (power)KM · Schematic IEC motor-starter form: motor starter coilKM · Schematic IEC multiplexer (MUX)MUX · Schematic IEC NAND gate (rectangular form)& · Schematic IEC negate dependency (N)Nm · Schematic IEC non-retriggerable monostable1⊓ · Schematic IEC NOR gate (rectangular form)≥1 · Schematic IEC NOT element (rectangular form)1 · Schematic IEC odd-parity element2k+1 · Schematic IEC open-circuit output, H-type (open emitter)OC-H · Schematic IEC open-circuit output, L-type (open collector)OC-L · Schematic IEC open-collector buffer (rectangular form)1 · Schematic IEC operational amplifier (rectangular form)▷∞ · Schematic IEC OR dependency (V)Vm · Schematic IEC OR gate (rectangular form)≥1 · Schematic IEC photoelectric emitter interface: emitter - AC drivenTX · Schematic IEC photoelectric emitter interface: emitter - DC drivenTX · Schematic IEC photoelectric emitter interface: emitter - receiver with form cTX · Schematic IEC photoelectric emitter interface: normally closed 4 wireTX · Schematic IEC photoelectric emitter interface: normally closed 4 wire with connectorTX · Schematic IEC photoelectric emitter interface: normally open 4 wireTX · Schematic IEC photoelectric emitter interface: normally open 4 wire with connectorTX · Schematic IEC photoelectric receiver: normally closed receiver - AC drivenRX · Schematic IEC photoelectric receiver: normally closed receiver - DC drivenRX · Schematic IEC photoelectric receiver: normally closed receiver 2 wireRX · Schematic IEC photoelectric receiver: normally closed receiver 2 wire with connectorRX · Schematic IEC photoelectric receiver: normally closed receiver 3 wireRX · Schematic IEC photoelectric receiver: normally closed receiver 3 wire with connectorRX · Schematic IEC photoelectric receiver: normally open receiver - AC drivenRX · Schematic IEC photoelectric receiver: normally open receiver - DC drivenRX · Schematic IEC photoelectric receiver: normally open receiver 2 wireRX · Schematic IEC photoelectric receiver: normally open receiver 2 wire with connectorRX · Schematic IEC photoelectric receiver: normally open receiver 3 wireRX · Schematic IEC photoelectric receiver: normally open receiver 3 wire with connectorRX · Schematic IEC PNP phototransistor: photosensitive pnp transistorPNP PHOTO · Schematic IEC polarity indicator at input (active-low input)POL-IN · Schematic IEC polarity indicator at output (active-low output)POL-OUT · Schematic IEC postponed output qualifierPOSTPONED · Schematic IEC priority encoder (HPRI/BIN)HPRI/BIN · Schematic IEC protective circuit-breaker form: 1 pole auto magneto-thermal switch/disconnectCB · Schematic IEC protective circuit-breaker form: 1 pole auto switch with magnetoCB · Schematic IEC protective circuit-breaker form: with current protectionCB · Schematic IEC protective circuit-breaker form: with max. current and min. voltage protectionCB · Schematic IEC protective circuit-breaker form: with max. thermal and current protectionCB · Schematic IEC protective circuit-breaker form: with max. thermal and min. voltage protectionCB · Schematic IEC protective circuit-breaker form: with max. thermal protection and differentialCB · Schematic IEC protective circuit-breaker form: with max. thermal/current and min. voltage protectionCB · Schematic IEC pulse-triggered (master-slave) JK flip-flop1J 1K · Schematic IEC pushbutton contact: mushroom head normally closed latchingPB · Schematic IEC pushbutton contact: mushroom head normally closed latching, key operatedPB · Schematic IEC pushbutton contact: mushroom head normally closed latching, pull to disengagePB · Schematic IEC pushbutton contact: mushroom head normally closed momentaryPB · Schematic IEC pushbutton contact: mushroom head normally closed twist latchPB · Schematic IEC pushbutton contact: mushroom head normally open latchingPB · Schematic IEC pushbutton contact: mushroom head normally open latching, key operatedPB · Schematic IEC pushbutton contact: mushroom head normally open latching, pull to disengagePB · Schematic IEC pushbutton contact: mushroom head normally open momentaryPB · Schematic IEC pushbutton contact: mushroom head normally open twist latchPB · Schematic IEC pushbutton contact: normally closed push button positive breakPB · Schematic IEC pushbutton contact: normally closed push button recessedPB · Schematic IEC pushbutton contact: normally closed push button recessed latchedPB · Schematic IEC pushbutton contact: normally open push button positive makePB · Schematic IEC pushbutton contact: normally open push button recessedPB · Schematic IEC pushbutton contact: normally open push button recessed latchedPB · Schematic IEC random-access memory (RAM)RAM · Schematic IEC read-only memory (ROM)ROM · Schematic IEC retriggerable monostable⊓ · Schematic IEC ripple counter (RCTRm)RCTR · Schematic IEC sample-and-hold elementS/H · Schematic IEC Schmitt-trigger buffer (rectangular form)1 · Schematic IEC Schmitt-trigger inverter (rectangular form)1 · Schematic IEC selector-switch contact: 2 position maintain, normally closedSS · Schematic IEC selector-switch contact: 2 position normally closed return from leftSS · Schematic IEC selector-switch contact: 2 position normally closed return from rightSS · Schematic IEC selector-switch contact: 2 position normally closed with lampSS · Schematic IEC selector-switch contact: 2 position normally open return from leftSS · Schematic IEC selector-switch contact: 2 position normally open return from rightSS · Schematic IEC selector-switch contact: 2 position normally open with lampSS · Schematic IEC selector-switch contact: 3 position maintain, normally closedSS · Schematic IEC selector-switch contact: 3 position normally closed key operated neutral 0SS · Schematic IEC selector-switch contact: 3 position normally closed key operated neutral 1SS · Schematic IEC selector-switch contact: 3 position normally closed key operated neutral 2SS · Schematic IEC selector-switch contact: 3 position normally closed neutral 0SS · Schematic IEC selector-switch contact: 3 position normally closed neutral 1SS · Schematic IEC selector-switch contact: 3 position normally closed neutral 2SS · Schematic IEC selector-switch contact: 3 position normally closed return from bothSS · Schematic IEC selector-switch contact: 3 position normally closed return from leftSS · Schematic IEC selector-switch contact: 3 position normally closed return from rightSS · Schematic IEC selector-switch contact: 3 position normally open key operated neutral 1SS · Schematic