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Panel design tools

Calculators and a checklist for engineers laying out control panels. Free, no sign-up.

Enclosure Heat & Cooling

Enclosure size (inches)
Fan cooling
— CFM
Heat the walls can shed
—
Heat left to remove
—
Exposed surface
—

Estimate for painted steel enclosures at sea level. Confirm the final size with the fan or air conditioner manufacturer's sizing tool.

24 VDC Power Supply Sizing

DeviceQtyAmps eachRemove

Example rows shown. Replace them with your devices and the current draw from each data sheet.

Recommended supply
5 A
Total load
—
With spare capacity
—
Supply power
—

Rounded up to common DIN-rail supply sizes: 2.5, 5, 10, 20 and 40 A.

Panel Design Checklist

0 of 0 checked

Common misses we see on prints. A general checklist, not a substitute for UL 508A, NFPA 79 or your customer's specification.

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