Can someone explain what this link is in this contactor drawing?

[David1977m]

This is in the level 3 science material handout. I know how a contactor work and asked my tutor what the link is, he looked at it and said he doesn’t know. Can someone please explain what it is please.

 

[David1977m]

If it was in parallel and a capacitor I would know, but this is on a 2 pole, one phase contactor in series and from the official C&G material.

 

[Jock from the north]

This is in the level 3 science material handout. I know how a contactor work and asked my tutor what the link is, he looked at it and said he doesn’t know. Can someone please explain what it is please.View attachment 119874

Could it be a fuse in the circuit when exposed to more current than design of circuit link will open .

 

[David1977m]

Could it be a fuse in the circuit when exposed to more current than design of circuit link will open .

I suppose a control fuse would make sense, but why is it saying link then in official documentation. I honestly don’t know how many hours I’ve spent on something that won’t make a difference to my exam but will bug me not knowing

 

[Jock from the north]

Could it be a fuse in the circuit when exposed to more current than design of circuit link will open .

I suppose a control fuse would make sense, but why is it saying link then in official documentation. I honestly don’t know how many hours I’ve spent on something that won’t make a difference to my exam but will bug me not knowing

Yeh I would imagine it would .there's plenty of more esteemed members on this site who might be able to clarify that particular point in circuit, I'm sure they will answer in time .

 

[westward10]

It is part of the control circuit possibly there as a safety measure, take out the link the contactor cannot be energised?
As above it could well be a fuse.

 

[DefyG]

Possibly a link with auxilary contact points???

Maybe shown as a point to put additional stop buttons if required?

 

[James]

Possibly a link with auxilary contact points???

Maybe shown as a point to put additional stop buttons if required?

Agreed, often a pair of contacts with a link will be put in a control box.
Later on the link can be removed and replaced with an extra stop button.

 

[brianmoooore]

DefyG wins the prize. It's a connection point for external stop buttons.
I'm fairly sure there was such a link in the old cube shaped MEM contactors.

 

[David1977m]

Thanks for the help. So I decided to look into the external emergency start/stop theory and found this GSH video explaining the link DOL remote start stop button