Just need some guidance

[James2249]

Hey Everyone

Just need some advice and what to look out for. I've installed some rocker switches 24vdc for a project and they keep blowing after a period of time. Any chance you can point us in the right direction and what to look out for?



Thank you

 

[DPG]

What are you switching with them, and how many amps is the load?

 

[littlespark]

When you say the switches “blow”, what’s happening? Do the just stop working? Stick open or closed? Actually “blow” with an audible sound?

As asked above, what is the load?
It might say it’s less than the 10A rating, but there are certain things that might have a larger start up current. Motors for example.

 

[James2249]

The load is c16 (Mains), a bit high but that's all we could we find and then we fused the transformer 2amps. The lights are for a light up board to notify people that they are in the building. Me and my work colleague have had a disagreement, he thinks it's the rocket switches and we need led lights but I think it's pulling too much current, that's resulting them to blow.

What are your thoughts?

Thanks guys

 

[DPG]

The load is c16 (Mains), a bit high but that's all we could we find and then we fused the transformer 2amps. The lights are for a light up board to notify people that they are in the building. Me and my work colleague have had a disagreement, he thinks it's the rocket switches and we need led lights but I think it's pulling too much current, that's resulting them to blow.

What are your thoughts?

Thanks guys

The c16 is the breaker rating, not the load. What is the rating of the lamps you are switching with the rocker switches?

 

[James2249]

Input current says 1.3 amps and load regulation of 3%. The switch is 10 amp rocker switch, the rocker switch would work for a few times but then a couple will stop working after a short period of time, say 20 switch lights 3 of them will stop working.

These are what I’ve used…

RS PRO Switch Mode DIN Rail Power Supply, 230V ac, 24V dc dc Output, 10A Output, 240W | RS

uk.rs-online.com

RS PRO Illuminated SPST, On-Off Rocker Switch Panel Mount | RS

uk.rs-online.com

Thank you

 

[DPG]

What lamps are you using?

Is the switch on the input side of the switch mode power supply, or on the 12VDC output side?

 

[SparkyChick]

What lamps are you using?

Is the switch on the input side of the switch mode power supply, or on the 12VDC output side?

It appears to be a 24v PSU, so either way they are exceeding the contact rating, it's just a case of by how much

 

[DPG]

It appears to be a 24v PSU, so either way they are exceeding the contact rating, it's just a case of by how much

Indeed. I think an upgrade of the switches is definitely in order!

Although the rear of the switch in the photograph appears to say 10A 125V / 2A 250V.