DTDP switch

[zoidberg]

Rummaging through a drawer hunting for something else, I unearthed this object - picked up when my local Maplins closed some time ago.

Calling PaulDiamond and others. What on earth - or rather, on water - could I reasonably use this for?

 

[PaulRainbow]

Doubt you'll find many uses onboard for a DPDT relay, even if you do, you need to find a suitable base and wire it in, likely more trouble to use than it's worth. DPDT relays with bases can be found on Ebay for under a fiver, with standard spade terminals.

 

[JumbleDuck]

Doubt you'll find many uses onboard for a DPDT relay, even if you do, you need to find a suitable base and wire it in ...

Looks like bog standard octal.

 

[HissyFit]

This illustrates the meaning of "don't save by buying." Even if it was reduced, if you didn't need it then the money would have been better saved for a Corneto (or any other random object that would have given you pleasure).

 

[Bilgediver]

Rummaging through a drawer hunting for something else, I unearthed this object - picked up when my local Maplins closed some time ago.

Calling PaulDiamond and others. What on earth - or rather, on water - could I reasonably use this for?

Can do all sorts if you have one of these to help you along the way.


SCREW TERMINAL OCTAL STYLE 8 PIN RELAY / VALVE BASE. | eBay

 

[Boater Sam]

Remote change over relay for shore line to inverter, used then many times. Also use the 240v AC version for automatic change over.

 

[prv]

Change over relay for shore line to inverter, used then many times.

As long as your boat doesn’t draw more than 10 amps, which seems slightly questionable for a boat sophisticated enough to have a built-in auto-changeover inverter.

Pete

 

[greeny]

Sell it on e-bay?

 

[Boater Sam]

Depends on the inverter size too. Where we moor the Shore power is only 5A! Its OK for all you guys attached to huge power stations to be clever, us mere mortals have less energy.

 

[paulajayne]

My Northern Lights genny has four of them, though not of that pin out configuration.

 

[pyrojames]

Doubt you'll find many uses onboard for a DPDT relay, even if you do, you need to find a suitable base and wire it in, likely more trouble to use than it's worth. DPDT relays with bases can be found on Ebay for under a fiver, with standard spade terminals.

Changeover relay, and my bilge pump alarm systems.

 

[Skylark]

This illustrates the meaning of "don't save by buying." Even if it was reduced, if you didn't need it then the money would have been better saved for a Corneto (or any other random object that would have given you pleasure).

……….but it was a bargain ???

 

[HissyFit]

……….but it was a bargain ???

I got one of those on a left-handed horse stone remover. Turns out all horses are right handed.

 

[PaulRainbow]

Thanks to those quoting my post and pointing out it's a changeover relay, being an electrician, i never would have worked that out.

I also said "not many uses" not "totally useless on a boat" I think in the last 5 years i might have fitted 2.

The one in the OP is rather unusual for a boat. A standard automotive style relay holder, with integrated mounting lug and fuse holder is about £3 and the relays, which use standard spade terminals, are about £4 from 12V planet, even cheaper on Ebay.

 

[Martin_J]

I use one in place of the DPDT switch that came with the NASA combined tricolour/anchor light.
I couldn't bring myself to spoil the aesthetics of the lovely existing Moody switch panel.
The tricolour light switch does exactly what it always has done.
The anchor light switch now energises the relay and reverses the current to the masthead unit therefore switching it to all round white.
I know that it's probably using about 75 mA when energised, but for the occasional few nights at anchor it was worth it not to have to change how the switch panel looks (and overall it will still use less power than the previous incandescent 25W bulb did).

 

[zoidberg]

Awlrite, awl you clever-clogs.... Wot's this, then?

 

[zoidberg]

Thinking of Martin_J's reply ( thanks ) could I use that on a combined steaming~deck floodlight lamp to be be mast-mounted?

 

[PaulRainbow]

I use one in place of the DPDT switch that came with the NASA combined tricolour/anchor light.
I couldn't bring myself to spoil the aesthetics of the lovely existing Moody switch panel.
The tricolour light switch does exactly what it always has done.
The anchor light switch now energises the relay and reverses the current to the masthead unit therefore switching it to all round white.
I know that it's probably using about 75 mA when energised, but for the occasional few nights at anchor it was worth it not to have to change how the switch panel looks (and overall it will still use less power than the previous incandescent 25W bulb did).

That's a good use of one Martin.

 

[PaulRainbow]

Awlrite, awl you clever-clogs.... Wot's this, then?

It's an automotive style 10A DPDT relay, like wot i mentioned previously.

 

[Boater Sam]

12v relay, with 6 tags its possibly DP CO, like the last one.