Hello, Daniel. The word is actually 'criterion', 'criteria' is plural.

UL508A seems to be restricted to something that switches other things on or off, or alters their operating modes.  UL61010-1 is for something that sends analog or digital control values, such as heater temperature or rate of rotation, to other things. If your panel does that, 61010-1 applies.

Best wishes and seasonal felicitations
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2019-12-13 08:50, Rodriguez, Daniel (ESP) wrote:

Good morning    all

I have a industrial control equipment with sensors and flowmeters made in an electrical panel of standard components.

Is there a criteria to use UL508A or UL61010-1?

It seems that UL508A is applicable for:

/This equipment consists of assemblies of two or more power circuit components, such as motor/

/controllers, overload relays, fused disconnect switches, and circuit breakers, or control circuit/

/components, such as pushbuttons, pilot lights, selector switches, timers, and control relays, or a/

/combination of power and control circuit components, with associated wiring, and terminals . These/

/components are mounted on, or contained within, an enclosure, or are mounted on a sub-panel./

And UL61010-1 is for

/Electrical industrial process-control equipment/

/This is equipment which controls one or more output quantities to specific values, with/

/each value determined by manual setting, by local or remote programming, or by one or/

/more input variables./

//

But it is not clear if a industrial panel made of UL approved components needs to be certified for UL508A or can be UL61010-1? Or there is any restriction

Thank you for your answer

Kind Regards / Saludos cordiales / Mit freundlichen Grüßen

Daniel Rodríguez

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