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Old 15th September 2012, 11:52 PM   #1
eladmi is offline eladmi  Germany
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Default Question regarding Max. Switching rate push button for Class-D amp + accessories

Good evening

I about to plan my next project and have a question regarding this switch:

http://www.farnell.com/datasheets/1581764.pdf

Click the image to open in full size.

Is the Max. Switching rate of 250 VAC and 5A enough for the following devices together?

1.
Meanwell SMPS (Meanwell Power Supply Products 4A - Current 230VAC, Inrush Current 60A 230VAC) which powers a Hifimedy T2 (Hifimediy T2)

2.
Apple USB Charger
Apple iPad 10W USB Power Adapter - Apple Store (U.S.)

No idea about ampere.

3.
Apple AirPort Express
(Apple - AirPort Express - View all the technical specifications.)
100-240V AC, 50-60Hz; input current: 0.2 amp

I really like the look of this switch. Thanks for your help.

Cheers

ElAdMi
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Old 16th September 2012, 12:11 AM   #2
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That little datasheet is a bit light on details but I's say the capacitive surge load of the Meanwell supply would give a set of 5 Amp contacts a problem in fairly short order. If you don't do anything to limit the surge, you will probably need a few times heavier contacts to get good life, even though your steady state load is not over 5A. The conditions during closing and opening of the contacts are often the harder problem to deal with. Nice looking switch, but not heavy enough...
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Old 20th October 2012, 10:43 PM   #3
eladmi is offline eladmi  Germany
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Quote:
Originally Posted by Andrew Eckhardt View Post
That little datasheet is a bit light on details but I's say the capacitive surge load of the Meanwell supply would give a set of 5 Amp contacts a problem in fairly short order. If you don't do anything to limit the surge, you will probably need a few times heavier contacts to get good life, even though your steady state load is not over 5A. The conditions during closing and opening of the contacts are often the harder problem to deal with. Nice looking switch, but not heavy enough...
Hi Andrew

Sorry for the late reply. Too bad, I really liked the looks of this switch. I got this one now as a substitue:

76-959035 - ITW SWITCHES - TASTER, ANTI-VANDAL BLACK | Farnell Schweiz

Thank you

Cheers
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Old 24th October 2012, 12:08 AM   #4
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Quote:
Originally Posted by Andrew Eckhardt View Post
That little datasheet is a bit light on details but I's say the capacitive surge load of the Meanwell supply would give a set of 5 Amp contacts a problem in fairly short order. If you don't do anything to limit the surge, you will probably need a few times heavier contacts to get good life, even though your steady state load is not over 5A. The conditions during closing and opening of the contacts are often the harder problem to deal with. Nice looking switch, but not heavy enough...
Depends if the Meanwell has a soft start or not.
Although most SMPS has thermistor to limit surge at power on.
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