Relay and contactor are functionally doing identical obligation, however the main difference among relay and contactor is that, contactor can carry large amount of cutting-edge however relay can deliver best less amount of present day from zero.1 a to twenty a. in this, we are going to see the 7 difference between relay and contactors.
what's contactor:
Contactor is an electromagnetic switch, which can be operated through giving external strength supply. the present day wearing ability of the contactor’s touch suggestions are high and having capability to break huge quantity of fault modern-day (around several ka). due to the fact they're coming with the arc chute that is used to quenching the electric arc throughout opening circumstance.
what is relay:
The designing and running precept are identical as a contactor, however they're designed to hold a small amount of current. given that they appear very small.
while deciding on between the 2, some very preferred regulations you can comply with to assist
whilst to use a relay:
whilst to apply a contactor:
contactors also are chosen upon the ampere scores of the burden and require an extra deliver (either ac or dc depending upon the sort of contactor we use) for excitation. subsequently, they're used for electricity switching and are typically open.
what's contactor:
Contactor is an electromagnetic switch, which can be operated through giving external strength supply. the present day wearing ability of the contactor’s touch suggestions are high and having capability to break huge quantity of fault modern-day (around several ka). due to the fact they're coming with the arc chute that is used to quenching the electric arc throughout opening circumstance.
what is relay:
The designing and running precept are identical as a contactor, however they're designed to hold a small amount of current. given that they appear very small.
Common terms among contactor and relay:
contactors and relays are doing the obligation of breaking (no) and starting (nc) of the circuit. both are having electromagnetic coils; the coil voltage relies upon on your supply. sometime the contactor come with extra auxiliary contacts that may be either no or nc. those auxiliary contacts get activated together with the primary contacts. switching is accomplished by using energization and de-energization of the contactor coils.
contactors and relays are doing the obligation of breaking (no) and starting (nc) of the circuit. both are having electromagnetic coils; the coil voltage relies upon on your supply. sometime the contactor come with extra auxiliary contacts that may be either no or nc. those auxiliary contacts get activated together with the primary contacts. switching is accomplished by using energization and de-energization of the contactor coils.
How to pick contactor and relays:
while deciding on between the 2, some very preferred regulations you can comply with to assist
whilst to use a relay:
- 10A or much less current
- coil voltage as much as 250vac and dc
whilst to apply a contactor:
- 9a or more cutting-edge
- up to 1000vac
- 1 or three phase
contactors also are chosen upon the ampere scores of the burden and require an extra deliver (either ac or dc depending upon the sort of contactor we use) for excitation. subsequently, they're used for electricity switching and are typically open.
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