Eaton C320KA1 Three-Phase AC Contactor 3-Pole High Capacity

The Eaton/Cutler-Hammer C320KA1 is a three-phase AC contactor with 3 poles designed for high-capacity switching in industrial control panels where reliable, heavy-duty power control is required; the 3-pole configuration ensures signals for all three phases can be switched together. It carries the Series A2 designation (SER.A2) and is rated for 600V, indicating its suitability for switching medium- to high-voltage three-phase circuits typical in industrial equipment. In operation, this contactor serves as the primary switching element in electrical control circuits to energize or de-energize three-phase loads, enabling automation and remote or manual start/stop sequences for motors and other loads. As part of Eaton's Cutler-Hammer family, the C320KA1 aligns with standard industrial control architectures and wiring practices, providing a straightforward option for engineers needing a 3-pole, high-capacity device within a single enclosure. The model number and designation—C320KA1, SER.A2—identify a specific product within Eaton's catalog, helping buyers ensure compatibility with existing control systems and replacement parts.