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Release time:2019-05-15
Standard Electrical Symbols For Electrical Schematic Diagrams

Standard Electrical Symbols For Electrical Schematic Diagrams


Standard Electrical Symbols For Electrical Schematic DiagramsThe standard electrical symbols are smart, industrial standard and vector-based for electrical schematic diagrams.Standard Electrical Symbols For Electrical Schematic Diagrams


Electrical Switch Symbols

Electrical Switch Symbols


Electrical Switch SymbolsEdraw Max includes one set of the standard switch symbols, which are smart, industrial standard and vector-based for electrical schematic diagrams.Standard Electrical Switch Symbols For Electrical Schematic Diagrams Most of the switch symbols can changed in their appearance, style andcolor according to the requirements. The switch symbols below shows SPST, SPDT, DPST, DPDT, makecontact, break contact, two way contact, 2 position switch, 3 position switch, 4position switch, limit switch, inertia switch, mercury switch, and also delayswitch such as time delay switch, time delay break, flow actuate switch, liquidlevel actuated switch, gas flow actuated switch, temperature actuated switch andpressure actuated switch. Also shown are the component symbols for fuse,isolator, relay contact, pilot light and mercury. Basic Switch SymbolsThe switch symbols below shows SPST, SPDT, DPST and DPDT. SPST Single Pole, Single Throw. An on-off switchallows current to flow only when it is in the closed (on) position. In our electrical software, you can click the action buttonthen click the Close Circuit menu item to close the circuit switch. You can double click to edit the text at the symbol. You can move the yellow control point to change theposition of the text. SPDT Single Pole, Double Throw. A 2-way changeoverswitch directs the flow of current to one of two routes according to itsposition. Some SPDT switches have a central off position and are described as"on-off-on". After selecting the SPDT symbol, you can change the switchposition up, center or download by the action button. DPST Double Pole, Single Throw. A dual on-off switchwhich is often used to switch mains electricity because it can isolate both thelive and neutral connections. DPDT Double Pole, Double Throw. This switch can bewired up as a reversing switch for a motor. Some DPDT switches have a centraloff position. Contact Switch SymbolsThe following switch symbols present make contact switch,break contact switch, two way contact switch, passing make contact switch,spring return switch, stay put switch, and also limit switch, circuit breaker. The switch contact symbols are smart and can be designed sothat the contacts "close" (establish continuity) when actuated, or "open"(interrupt continuity) when actuated. For switches that have a spring-returnmechanism in them, the direction that the spring returns it to with no appliedforce is called the normal position. Therefore, contacts that are open in thisposition are called normally open and contacts that are closed in this positionare called normally closed. For example: when you click the action button at the MakeContact switch symbol, the follow dialog will pop up. Then you can change the switch's appearance according toyour requirements. The above switch symbols are some different appearance ofbreak contact switch. Electrical Switch SymbolsThe following table lists more electrical switch symbols inour electrical drawing software such as position switch, manual switch,pushbutton break switch, selector switch.

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