RMS-ABB.Africa
Technical guides
Selection, installation and compliance notes written against the products in this catalogue — each one linked to the order codes it applies to.
9 guides
Industrial Control
Contactor vs relay: how to choose, and how to size a contactor
A contactor's current rating is not one number. AC-1 and AC-3 describe different switching duties and produce different figures for the same device — and picking the wrong one is…