Power off switch activation

[JJJJ]

OK. Have a situation where I would like a switch that stays closed or on when there is power and opens when the power goes out. This for the first phase of a two phase process I am considering. Basically once the power goes out I would like a low voltage switch to be opened or essentially turned off.

Any ideas.

 

[DIYrich]

How many volts, amps, ac or dc? Basically, you want a normally open relay that closes when power is applied.

 

[JJJJ]

My guess is DC. The Victron Multiplus has the option of plugging in a control panel in module "H". I have not been able to find a voltage for this. However when I went to the Victron forum this can be used as an on off switch method without the control panel. I am hoping to use the power outage to activate this switch. Wish I knew more. This is a new pursuit.

 

[JJJJ]

Actually in rereading the forum response I can get this by simply inserting a 3 pole switch. Since I am only interested in 2 of these poles, I would simply need a switch that could be turned on and off so my guess that voltage would not be considered here.

So when the power goes off, it would trigger a remote switch that would turn off.

 

[JJJJ]

Looking at no voltage release options

 

[DIYrich]

What is the volts and amps of what you are trying to switch?

 

[JJJJ]

This a video that describes what I am trying to tap into. It is slightly different on the 24v unit but it looks like the same wire loop. In another thread it suggested that I could use a simple on off switch. The video section is about 15 seconds or so.

 

[Texas-Mark]

I would like a switch that stays closed or on when there is power

So when the power goes off,

Looking at no voltage release options

What "power" (i.e. voltage) are your trying to monitor? Regardless, just find a relay with a coil voltage for that source voltage and use the NO or NC contacts (depending on what you need to activate).

 

[JJJJ]

If I am understanding correctly something like this?

https://www.amazon.com/Miniature-Current-Normally-Monitoring-Detectable%EF%BC%88M3056%EF%BC%89/dp/B0BG7X6TZ7/ref=sr_1_6

 

[Texas-Mark]

If I am understanding correctly something like this?

https://www.amazon.com/Miniature-Current-Normally-Monitoring-Detectable%EF%BC%88M3056%EF%BC%89/dp/B0BG7X6TZ7/ref=sr_1_6

Not unless you are specifically trying to sense current. You could have a source voltage and no current (i.e. no load), so that may not do what you want.

It would help if you explained exactly what voltage source you are trying to monitor. For example if you are trying to monitor 110V AC then just a simple 110V AC coil relay like this will work fine.

https://www.amazon.com/Electromagnetic-Power-Relay-Socket-Indicator/dp/B0BND2FPZ3?th=1

 

[JJJJ]

So basically I am trying to monitor if AC in the home is on or off. If off I would like it to throw a switch which would turn off the Victron Multiplus. I would then put an override switch closer to the inverter.

This to create a protection so if the outside meter is pulled by the fire department, e.g. fire (not a welcome situation) that the inverter would shut off for safety purposes. If the outage was for any other reason then a user in the house could override with a switch.

 

[JJJJ]

Ordered this. Will perform some tests to see how it performs. Price was very reasonable:

https://www.amazon.com/gp/product/B085M6S7NL/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1