Terminal block / Bus Bar

[Firestar_3x]

Hi Guys,

Bit of background info, current power distribution solution for our alarm zones isn't 100%, so would like a proper bus bar, we have around 20 zones each needing positive and negative supply (12v).

I'm looking for a terminal style block which splits one input into multiple outputs, i've found a few bus bars but not 100% what i'm after, would like something terminal block style but with a constant bus at one side.

Closest i've come is this on ebay US: http://www.ebay.co.uk/itm/8-Way-Ter...673?pt=LH_DefaultDomain_0&hash=item2a1b44b771

Anyone help / have any ideas?

Thanks.

 

[Nightglow]

Something like this.

http://www.alarmworld.co.uk/intruder/junction-boxes/24-way-junction-box/prod_84.html

http://www.hunters-wholesalers.co.uk/junction-white-p-345.html#.UaxwGJyNDl0

 

[Firestar_3x]

Need something which will fit inside the alarm control box, so not in a case and has a solid bus.

 

[Nightglow]

Ah! A few more details.

Solid bushbar , what about Wagobox connectors, they do a Compact 8-Port Pushwire Terminal connector, easy to daisy chain two or more together.

http://www.screwfix.com/p/8-way-push-wire-connector-773-series-pack-of-50/78075


You can mount them on a bushbar.

https://www.wagobox.com/shop/accessories/din-rail-mounted-222-connector-carrier-1pcs.html

http://www.google.co.uk/url?sa=t&rc...sg=AFQjCNG2KBEDpzBiBzQcWecYHQJdHGN5-Q&cad=rja

 

[Firestar_3x]

Cheers, those Wago pushwire blocks look interesting, could fit the bill!

 

[bitslice]

Bit of background info, current power distribution solution for our alarm zones isn't 100%, so would like a proper bus bar, we have around 20 zones each needing positive and negative supply (12v)

Isn't something like this a better solution?

12V DC 20AMP 18 OUTPUT POWER SUPPLY

http://www.ebay.co.uk/itm/12V-DC-20...OXED-POWER-SUPPLY-PSU-REGULATED-/380653201820


All the outputs are fused and you are not reliant on an alarms PSU to supply them.
There are other versions with space for battery backup if required.
like http://www.ebay.co.uk/itm/CCTV-12V-8A-9ch-Switching-Power-Supply-with-Backup-/150390461089

You could even allocate a 9 way version for each zone.

 

[Firestar_3x]

Interesting idea, rather keep everything inside the alarm case and use the existing power supply, which is monitored by the system.

 

[bitslice]

It depends on the loading, nearly all alarm panel power supplies are basic in design and don't really have much spare capacity (tiny capacitors, tin foil heatsinks). A separate supply also helps with line noise, so you are not trying to run a microprocessor from a transformer and at the same time driving switching loads through 100m of cable (= huge aerial).
I added line filter circuits to my PIRs as there is nothing on these things to cope with common mode noise.

 

[Firestar_3x]

All the cables are screened etc, I just noticed that Texecom do a fully monitored power supply box, probs go for that and be done with it.

 

[bitslice]

All the cables are screened etc, I just noticed that Texecom do a fully monitored power supply box, probs go for that and be done with it.

The PSU200?
Nice find, I was having a look around for something that would do some self monitoring, that sounds ideal.

 

[Firestar_3x]

Yea, seems to fit the bill, just more complex than what I was after

 

[bitslice]

Installation manual (manufacturers are always arsey about letting people see these for some reason )

http://www.google.co.uk/url?sa=t&rc...bXKFa89WNxgo9Y07w&sig2=2SmxZkTj6o6KQboQU4rpPw


I've seen commoning blocks used for common earthing, and I did have a link to a bus bar strip for a terminal block (really hard to find), but really your link is much the same thing.

 

[Firestar_3x]

Yea, they want you to be a registered installer I think Had similar issues when trying to decide on a system to buy, ended up on some reseller website looking at manuals.

Will take a proper look at the manual tomoz