Resistive, yes.
Contactor ratings have everything to do with the nature of the load connected to them. At a very basic basic level, the easiest rating to attain is a resistive load rating; the power factor is 1.0 at the moment the load is switches, no induction, no additional sustaining of the arc. As a load becomes more capacitive or inductive, the harder it becomes for the contacts to survive and the lower the "rating" of the contacts. So you will see for example that a NEMA size 1 motor starter can switch a 10HP 460V motor which is 14A FLC, but if the same contactor labeled as a "lighting contactor" is capable of 30A resistive or ballast load.
