Circuit Breaker Symbol Iec

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.

Circuit breaker symbol iec. Rsa iec air circuit breaker symbol 1. 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. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. This symbol represents circuit breaker with three poles.

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. Advertisements rsa iec air circuit breaker symbol 1. Horizontal symbol vertical symbol description hcb2 vcb2 circuit breaker 2nd pole hcb21th vcb21th thermal 2nd pole hcb21thi vcb21thi current limit thermal 2nd pole hds21 vds21 disconnect 2nd pole hds21aux vds21aux disconnect normally open auxiliary contact hds22aux vds22aux disconnect normally closed auxiliary contact hcb2120f vcb2120f auto return hcb2121f vcb2121f with mechanical block and. It connects three phases whenever there is an overload or short circuit in any phase the circuit breaker trips all three phases simultaneously.

Such kind of breakers is used in three phase systems in industries. 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. Coronavirus summer cricut svg silhouette svg cut file.

As 1102 and iec 60617 for graphical symbols for electrotechnology.