Circuit Breaker Symbol Iec

As 1102 and iec 60617 for graphical symbols for electrotechnology.

Circuit breaker symbol iec. This symbol represents circuit breaker with three poles. Available in svg png jpg dxf dwg formats. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. Miniature circuit breakers which in the uk have been manufactured since 1965 to bs 3871 under the title miniature air circuit breakers for a c.

Circuits the introduction in 1987 of iec 898 under the title circuit breakers for overcurrent protection for household and similar installations formed the basis for. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit its basic function is to interrupt current flow after a fault is detected. Circuit breakers symbols for use in electrical pneumatic and hydraulic schematic diagrams. Ieee 315 doesn t agree with the use of q the ieee standard calls circuit breakers cb which is arguably a more logical choice.

An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions such as wires batteries resistors and transistors in a schematic diagram of an electrical or electronic circuit these symbols are largely standardized internationally today but may vary from country to country or engineering discipline based on traditional conventions. Similarly circuit breakers are called q because iec 60750 says so. Standard electrical iec symbols also known as iec 60617 british standard bs 3939 used to represent various devices including pilot lights relays timers and switches for usage in electrical schematic diagrams. Horizontal symbol vertical symbol description hcb1 vcb1 circuit breaker 1 pole hcb11th vcb11th thermal circuit breaker hcb11thi vcb11thi current limit thermal hcb11q9 vcb11q9 magneto thermal hcb11q13 vcb11q13 magneto thermal with differential hcb11q17 vcb11q17 differential hcb11q29 vcb11q29 with current protection hcb11q33 vcb11q33 with current protection and lack of voltage protection.