AutoCAD Electrical General Discussion

AutoCAD Electrical General Discussion

19 Posts
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Registered: ‎08-13-2012
Post 1 of 3

Breaker auxiliry contacts & motorized operating mechanizm

284 Views, 2 Replies
10-29-2012 08:15 AM



Please help me to know the proper way of insering NO/NC/Trip auxiliry contacts for a circuit breaker, also I need to add a Undervoltage/ shunt trip release and a motorized electrical operating mechanism for the same breaker. Now Iam choosing a relay NO contact and change the family to CB. I dont know how to show the undervolatge release/shunt trip release/ motorized operating mechanism for that breakers. While making a component wirle list I need to get all the wire connections associated with that particular breaker. 




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Registered: ‎06-01-2010
Post 2 of 3

Re: Breaker auxiliary contacts & motorized operating mechanizm

10-29-2012 03:39 PM in reply to: psrajesh4u

Under the breaker/disconnect menu in the Insert Component dialog, there is a sub menu for Circuit Breaker 2nd poles.

This includes the standard auxiliary contacts which should cover your contacts.


However the the shunt trip and and motorised operator are not represented. I actually copied the standard relay coil, modified it to be a child component and stuck it in this menu as well. This coil is what I use for things like the shunt trip. For a motor, go to the Motor Control section and there should be a suitable motor there.


I find that I use coils like this a fair bit as the company I work for builds and supplies 11kV and 33kV vacuum and gas circuit breakers.


Regards Brad

Icemanau (NNTP handle: Brad Coleman)

19 Posts
0 Kudos
Registered: ‎08-13-2012
Post 3 of 3

Re: Breaker auxiliry contacts & motorized operating mechanizm

10-30-2012 07:44 PM in reply to: psrajesh4u



Thank you for your reply.




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