AT Circular Series

Amphenol Industrial Operations is proud to introduce an exciting addition to its AT Circular connector series—a 3 and 5-pole plug that takes your connectivity experience to the next level. Our AT Circular plugs incorporate Amphenol’s cutting-edge AT contact technology and are purposefully engineered to excel in the most demanding applications found in the construction, farm equipment, and truck environments.

The AT Circular series is characterized by its molded thermoplastic construction, featuring a robust positive bayonet retention system. It’s sealed to perfection with redundant grommet wire sealing, ensuring your connections remain secure even in harsh conditions. The square flange design allows for a seamless drop-in replacement for existing panel designs, while the jam nut version simplifies installation.

In addition, our 9-pin black receptacles align perfectly with the J1939 diagnostic connector interface, offering compatibility and ease of use.

Amphenol’s AT Contact technology is already a trusted choice among major OEMs, thanks to its machined contacts available in both Nickel and Gold plating options. Elevate your connectivity game with Amphenol’s Enhanced AT Circular Plugs—a solution designed for reliability, durability, and exceptional performance in demanding environments.