The Siemens 6GT2790-0CB00 is a protective sleeve with a heavy-gauge threaded joint, designed for subsequent mounting onto Ethernet cables to seal the RJ45 connector at the gateway end. It's a SIMATIC RTLS accessory specifically intended for use with the Amphenol LTW RCP-5SPFFHTCU7001 connector to achieve IP65 protection at the gateway interface.
What the IP rating means for fit
Rated IP65/67, this sleeve seals the RJ45 connection against dust ingress and low-pressure water jets (IP65) and temporary immersion (IP67). That means it's suitable for washdown environments, outdoor cabinets, or any location where the gateway sees moisture or hose spray — not just dry control room panels.
The green plastic connector on the Ethernet cable 6XV1870-3Qxxx must be removed before installation. The sleeve accepts cables with a cross-section of 5 to 6.5 mm and the threaded joint tightens to 0.8 to 1.5 N·m. Material is black nylon; overall height is 57.5 mm with a 25.4 mm diameter.
This part carries an NRND (Not Recommended for New Designs) status from Siemens. That means it's still available for existing BOM lines and maintenance spares, but it's no longer the recommended choice for new system designs. Sourcing is via RFQ — quoted to order against confirmed demand, not a stocked shelf item.