Need to select AC high current (upto 1000A)capable high side switch/driver

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ramsiri12

Joined Jul 10, 2019
3
Need to select AC high current (upto 1000A)capable high side switch/driver for 230v AC transmission line. can anyone suggest any switch type component or part no?
 

Ian0

Joined Aug 7, 2020
10,032
hi sir..thanks for your response..i am searching for component like triac or some thing else..like electronic switch...if any triac is there means plz share me the part no
I’ve not seen triacs that large, but you could use two back-to-back thyristors. Thyristors are available in currents up to thousands of amps.
However, bear in mind there is a drop of 1Volt, which would require that you dissipate 1000W on a heatsink.
 

schmitt trigger

Joined Jul 12, 2010
921
I second Ian's suggestion. Thyristors (SCR) are the way to go if you don't want to employ a contactor.

A Powerex C430M is 600V, 1070A RMS. For AC switching you will require two of each per phase.

There are larger, much larger devices.......if you want more.
 
Last edited:

MisterBill2

Joined Jan 23, 2018
18,975
What sort of application? A transmission line itself does not draw much current. And the type of load will influence the type of switch quite a bit. Also, how frequently and how rapidly the switching is required will matter.
 
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