Anypne has found this piece?

[jordi_ramis]

Hi,

For months I'm looking for this piece without success:

A relay module powered by 220V and that can be controlled (toggled ON/OFF) by a wired NO (normally open) momentary switch (push button).

All I have found is some X10 micro modules that offer this functionallity but they very expensive as they are also X10. I'm looking for a simple way to ON/OFF a 220V appliance with a push button, the module has to be powered also by 220V I don't want to have to separate 12V (or similar) power supply.

Anyone know something like that?. Thanks a lot!.

 

[Jamie3032]

Cant you just use a contactor with a 230Volt Coil or am I missing something here?

 

[westmac]

No, a contractor won't latch on, only off.

Get to RS, they have endless different types you could use. Bear in mind the maximum current rating though, you may have to use the relay to operate a contactor.

Try the one below, not cheap for one relay but still won't break the bank.

http://uk.rs-online.com/web/p/latching-relays/2928310/

 

[Jamie3032]

A contactor can be made to latch on with a simple bit of wiring, granted you would also require a N/C stop switch in order to break the latch, cheers

 

[Golden_Boy]

A contactor can be made to latch on with a simple bit of wiring, granted you would also require a N/C stop switch in order to break the latch, cheers

I know is american but the theory is the same. One button for on and one for off.

 

[westmac]

I know is american but the theory is the same. One button for on and one for off.

He's after one button though, the latching relay on the link I posted controlling a contactor if required will be perfect.

 

[Golden_Boy]

He's after one button though, the latching relay on the link I posted controlling a contactor if required will be perfect.

How does one UNLATCH that relay ?? Once its latched ?

 

[westmac]

How does one UNLATCH that relay ?? Once its latched ?

One energises it again.

 

[i=p/u]

powercut

 

[westmac]

This one might be better, DIN mounted with no need for a base.

http://uk.rs-online.com/mobile/p/latching-relays/5111026/

 

[Jamie3032]

This one might be better, DIN mounted with no need for a base.

Buy Latching Relays 16A 2NO step DIN relay, 230Vac Finder 20.22.8.230.0000 online from RS for next day delivery.

Looks good to me

 

[Golden_Boy]

One energises it again.

I am obvoisly missing something here.
Can you please explain how that would work.
Having looked at the specs I am at a loss..................

 

[Golden_Boy]

This one might be better, DIN mounted with no need for a base.

Buy Latching Relays 16A 2NO step DIN relay, 230Vac Finder 20.22.8.230.0000 online from RS for next day delivery.

That would require an on-off switch for the coil. The OP wants ONE pushbutton !!

 

[Jamie3032]

I am obvoisly missing something here.
Can you please explain how that would work.
Having looked at the specs I am at a loss..................

A current is passed through a coil of wire. This attracts a piece of iron which moves a little lever with a hook on it.
The hook pulls on the teeth of a gear wheel one tooth at a time each time the coil gets current

This causes the relay to rotate the wheel in steps. This might then cause the wheel to turn electrical contacts on and off. - Google is your friend

 

[Golden_Boy]

A current is passed through a coil of wire. This attracts a piece of iron which moves a little lever with a hook on it.
The hook pulls on the teeth of a gear wheel one tooth at a time each time the coil gets current

This causes the relay to rotate the wheel in steps. This might then cause the wheel to turn electrical contacts on and off. - Google is your friend

Yes........ but the relay you referred to has not got that feature.... Google is indeed my friend LOL

 

[HandySparks]

Yes........ but the relay you referred to has not got that feature.... Google is indeed my friend LOL

From the "Product Information" tab for RS 511-1026:

16A 2NO step DIN relay, 230Vac
16A Step Relays - 20 Series


The 20 Series are available as DPST-NO or SPST-NO + SPST-NC step relays. On
each successive energisation of the relay coil the contacts will change state
thus providing a step or "flip flop" sequence of operation. An override test
button allows manual advancement of the step sequence and individual mechanical
flags provide visual indication of contact status.,Typical applications would
include the control of lighting where push on push off or sequential operation
is required, automatic opening and closing of doors, gates, etc. Use in portable
or battery powered equipment requiring contact status to be maintained without
continuous supply to the coil and functions where manual override operation is
desirable.

17.5mm wide (EN 50022) 35mm Din rail mount
housing
Manual test button and mechanical indicators
Minimum impulse
duration: 0.1sec
Maximum impulse duration: 1 hour
Insulation between coil
and contacts (1.2/50μ); 4kV
Nominal lamp rating: incandescent (230Vac);
2000W
Compensated fluorescent (230Vac); 750W
Temperature range: -40 to
+40°C
Protection category: IP20

 

[THE DUKE]

Latching push button Schnieder do them, could then use standard relay or contactor will try and get you a part number

 

[Golden_Boy]

From the "Product Information" tab for RS 511-1026:

16A 2NO step DIN relay, 230Vac
16A Step Relays - 20 Series


The 20 Series are available as DPST-NO or SPST-NO + SPST-NC step relays. On
each successive energisation of the relay coil the contacts will change state
thus providing a step or "flip flop" sequence of operation. An override test
button allows manual advancement of the step sequence and individual mechanical
flags provide visual indication of contact status.,Typical applications would
include the control of lighting where push on push off or sequential operation
is required, automatic opening and closing of doors, gates, etc. Use in portable
or battery powered equipment requiring contact status to be maintained without
continuous supply to the coil and functions where manual override operation is
desirable.

17.5mm wide (EN 50022) 35mm Din rail mount
housing
Manual test button and mechanical indicators
Minimum impulse
duration: 0.1sec
Maximum impulse duration: 1 hour
Insulation between coil
and contacts (1.2/50μ); 4kV
Nominal lamp rating: incandescent (230Vac);
2000W
Compensated fluorescent (230Vac); 750W
Temperature range: -40 to
+40°C
Protection category: IP20

Yep.. that will do....

 

[THE DUKE]

Think this is the one in white they also do illuminated ones in various colours RS 380 5224

 

[Jamie3032]

Yes........ but the relay you referred to has not got that feature.... Google is indeed my friend LOL

Hi, just had a look at the specification, looks right to me

The 20 Series are available as DPST-NO or SPST-NO + SPST-NC step relays. On each successive energisation of the relay coil the contacts will change state thus providing a step or "flip flop" sequence of operation.

 

[stuylangford]

Direct on line starter

 

[Jerry H]

What you need is an 'Impulse relay' Din rail mounted. Controlled by a momentary push to make switch. Push once relay closes, push again and relay opens. Merlin Gerin do a good range.

Good luck
Jerry

 

[HandySparks]

What you need is an 'Impulse relay' Din rail mounted. Controlled by a momentary push to make switch. Push once relay closes, push again and relay opens. Merlin Gerin do a good range.

Yes! that's the term, "Impulse Relay". I was trying to remember the name when I posted up the spec from RS. Here's some from Schneider:
Automation and Control - Schneider Electric

 

[jordi_ramis]

Hi, thanks to all for your responses it seems that this effectively called 'impulse relay' or 'step relay' (these can have other functions) or 'latching relay' (sometimes is just called this way). It seems that the name varies from a company to another but I have found a bunch of products now I know what I'm looking for. Again thanks to all because I was looking for this for months withous success. Thanks, thanks!