The meaning of those

[Tom749 0]

I want to know about the meaning of the attached picture (AB Contactor). What is meaned in the A, B, C? Thanks for your help in advance.

[dmargineau 6]

AC-12 is the IEC (European) rating for "standard" loads (solenoids, contactors) at rated voltage. AC-15 is the IEC rating for resistive loads; it will vary depending of the supply voltage. 600 V AC is the UL; CSA (North-America) rating. A600 is the NEMA Designation Contact Rating for 10 Amp AC Conventional Thermal Current. P600 is the NEMA Designation Contact Rating for 5 Amp DC Conventional Thermal Current. In conclusion, A are the European Union electrical standard ratings of the control relay while B and C are the Noth American ratings.