The Siemens 3RK1901-2NR21 is an AS-Interface M12 branch connector designed for reliable fieldbus network extensions. This unit features a 4-amp current rating and comes equipped with an angled M12 cable socket, offering flexibility in tight installation spaces. With a 1-meter cable length and robust protection ratings of IP67, IP68, and IP69K, it ensures durability and resistance to harsh environmental conditions. Distributed by BSP Automation, this component is well-suited for industrial automation setups requiring secure and efficient network branching.