Amphenol RNT 447 19/001 2 Way Female Plug Power Connector

The Amphenol Amphe-OBTS C10-679666-B2S (equivalent to Ericsson RNT 447 19/001) is a 2-way female plug power connector designed for reliable DC power delivery in outdoor telecom infrastructure. It is primarily used to connect DC power cables to Ericsson Remote Radio Units (RRU/RRH), including models from the RRUS 01, Radio 22xx, 44xx and similar series deployed in 4G and 5G base stations. The connector follows a circular bayonet-coupling design based on MIL-C-26482 Series 2 style, ensuring secure mating and easy field installation on cell towers and remote radio heads.Key electrical characteristics include a voltage rating of 60 V DC (nominal -48 V DC telecom standard) and a current rating of 26 A per contact. It supports wire sizes from approximately 8–10 AWG (1–10 mm²), with typical cable outer diameter acceptance in the 6–18 mm range. Contacts are copper alloy with plating options that provide low contact resistance and reliable performance under continuous load. The design minimizes voltage drop and supports the high current demands of modern remote radio units while maintaining compatibility with standard telecom DC power distribution systems, battery backup units and power junction boxes.
Mechanically, the connector features a rugged zinc alloy shell that delivers 360° EMI shielding, mechanical durability and corrosion resistance suitable for harsh outdoor environments. It incorporates environmental sealing with silicone rubber components to protect against moisture, dust and temperature extremes (operating range typically -55°C to +105°C). The plug includes bayonet coupling with a locking mechanism (some variants feature an additional metal locking ring) for vibration and shock resistance during operation on towers exposed to wind and mechanical stress. Mating cycles are rated up to several hundred operations, facilitating maintenance and upgrades without compromising integrity.
The Amphenol Amphe-OBTS series emphasizes field-friendly termination: the female plug side uses crimp contacts, while compatible receptacles on the RRU often employ screw or other termination methods. This configuration enables quick cable assembly and replacement in tower-top or ground-level installations. The lightweight construction reduces overall load on mounting hardware compared to older connector generations, while maintaining full backward compatibility with Ericsson-standard RRU power interfaces.
This power connector is part of the broader Amphe-OBTS family developed specifically for next-generation base station power connections. It ensures stable electrical continuity between the DC power source (rectifiers, batteries or distribution units) and the remote radio equipment, supporting continuous operation of 2G/3G/4G/5G radio access networks. Proper cable selection, correct crimping tools and adherence to torque specifications during installation are required to achieve specified performance and sealing. The connector is supplied as a free-hanging in-line female plug, ready for termination onto power cables in telecom maintenance, site upgrades or new deployments.