Teltonika PR3PUPS3 Universal 9 W Power Supply for RUT240 and RUT955

The RUT240 and RUT955 are two of the most widely deployed industrial cellular routers in the field, and the PR3PUPS3 is their universal power supply — the 9 W adapter Teltonika specifies, in the multi-region format designed for international use. The universal format solves a procurement problem more than a technical one. Organizations that build kits centrally and ship worldwide cannot predict which wall standard a router will meet; stocking the universal PSU means the same kit works everywhere, one part number covers the fleet, and nobody discovers a plug mismatch during a remote commissioning window. US-only operations can choose the fixed-plug PR3PUUS3 instead — electrically the same 9 W story. On rating: 9 W covers the RUT240 and RUT955 including cellular transmit peaks, which is the load that catches generic adapters out. A router that runs for hours then resets during a large upload is showing classic power-sag behavior; matching the factory rating eliminates the guesswork. Note that the supply is specified for these RUT models — RUTX-series routers draw more and use 18 W or 24 W parts. At about 0.31 lb, it stores and ships easily. Practical advice from fleet operators: adapters are the most frequently lost item in any router estate, so order spares at roughly ten percent of fleet size. Cheap insurance against a truck roll that ends with 'the site had no PSU.'