A-Key
Purpose: Designed for Ethernet, supports high-speed data transmission (such as 10Gbps Cat.6A)59.
Features:
Complies with IEC 61076-3-124 standard, 75% smaller than traditional RJ45, suitable for high-density installation27.
Supports PoE (Power over Ethernet) applications, with a current carrying capacity of up to 90W (PoE++)39.
B-Key
Purpose: For non-Ethernet applications, such as industrial bus communication (such as Profinet, EtherCAT), serial signals or sensor connections58.
Features:
Different from the shape of the Type A physical interface, "key coding" is used to prevent mis-insertion89.
Suitable for industrial control scenarios that require anti-interference and stability.
