Contactor Symbol Electrical Drawing

Electrical symbols and line diagrams chapter 3 material taken from chapter 3 of electric motor controls g.

Contactor symbol electrical drawing. Electrical schematics are commonly classified into power circuit and control circuit. Rockis 2001 one line diagrams one line diagram a diagram that uses single lines and graphic symbols to indicate the path and components of an electrical circuit. Electrical symbols and electronic circuit symbols are used for drawing schematic diagram. A contactor is controlled by a circuit which has a much lower power level than the switched circuit.

4 master contactor 5 stopping device 6 starting circuit breaker 7 rate of change relay 8 control power disconnecting device 9 reversing device 10 unit sequence switch 11 multifunction device. Table of electrical symbols. Electrical symbols electronic circuit symbols of schematic diagram resistor capacitor inductor relay switch wire ground diode led. Electrical drawings can represent anything from a single line power distribution to a power or control circuit and are prepared using various symbols for electrical devices and their interconnections with lines representing conductors or wires used for interconnections.

Available in svg png jpg dxf dwg formats. Due to the number of variants used there may have several symbols in this reference chart for the same type of equipment these can vary dependent upon drawing package used. Common electrical symbols this is not a definitive list of all symbols used in electrical identification but merely a guide to some of the more commonly used symbols. Reading and understanding electrical drawings.

Table 1 standard elementary diagram symbols switches selectors push buttons momentary contact push buttons maintained contact pilot lights instant operating contacts timed contacts the diagram symbols in table 1 are used by square d and where applicable conform to nema national electrical manufacturers a ssociation standards. Contactors symbols for use in electrical pneumatic and hydraulic schematic diagrams. The symbols represent electrical and electronic components. Electrical circuits electrical circuits are circuits used to interconnect different electrical equipments together to enable the working of an electrical device.

A contactor is an electrically controlled switch used for switching a power circuit similar to a relay except with higher current ratings. Electrical iec 60617 bs 3939 symbols representing isolators disconnectors fuses ccontactors and overloads for usage in drawing electrical circuits iec isolators disconnectors fuses contactors overloads.