Never Saw One Of These...help!

[the doctor]

Hello all,

I attended a shower fault the other evening. The house had two showers off one supply on a relay. One of the components was....... All I can do is describe it here as I have never seen one.

Looks like a din rail mounted relay with a couple of auxiliary contacts.

The unit was marked 7-39A.

When the shower was turned on that was supplied through the unit the auxiliary terminals went open circuit.

It looks like some sort of reed switch that is triggered by the current passing through it

I have been on many jobs my whole life and feel humbled by this one. When I figured out howit was wired I seen it was simple yet clever!

Can the forum tell me, what it is called and where would you use them

Cheers

 

[NozSpark]

It sounds like its a shower priority switch to me,,, they just make sure you can't use both showers at the same time I.e. overload the supply

 

[steptoe]

^^^^^  +1

I'll go with that,

 

[the doctor]

Never heard of one....well you think you've seen it all

 

[steptoe]

doc, I know you are in eire now, but since when did they have a time difference?

 

[Sidewinder]

Current operated switch of some sort I would say.

 

[Technician]

 Is it something like this?

 Siemens Priority Switch (current sensing relay)| MeteorElectrical.com

 

[ScottR]

This is why I love coming on here learn something new everyday.

 

[NozSpark]

Well to be absolutely honest, I have never seen one either,,,, but I have heard about them

 

[OnOff]

I have a remote control Triton Body Dryer that sits in the ceiling. 8.something kW. That has a built in "priority switch" for if you supply the shower and dryer off the same breaker as in it's one or the other on at a time. (Not actually wired like that as the shower is pumped not electric).

 

[kerching]

We too have a priority drying system in place

First into the shower/ bath gets the biggest towel

Just being green

 

[Manator]

It is definitely a priority switch, we fit them all the time, not for showers but for essential equipment.

 

[SLIPSHOD & SLAPDASH]

I have not seen that method used for showers. The last one i saw had a flow switch on the water feed to energise the relay.

 

[binky]

didn't realise you could get a designated product