"3A specifications connectors" refer to connectors designed to handle a 3 Ampere current, commonly found in USB, modular, and industrial applications, with specific types like Harting's Han 3A for heavy-duty use or miniature WireLock 1.80mm for automotive, all defined by current rating, voltage, size (e.g., 3A industrial size), and intended use, from low-power data to robust power delivery. 

When searching, specify the connector family (USB, Han, WireLock) and the current/voltage rating to find the exact 3A connector you need.