Siemens 3ZX1012-0RH11-1AA1 Safety Relay Module

Order No. 3ZX1012-0RH11-1AA1 is a Siemens Sirius safety-relay instruction set identifier, not a standalone relay module. The code is used to order an instruction set for the Sirius line of motor-control equipment—including contactors, overload relays and safety accessories—and it is explicitly not a valid part number for a standard 3RT contactor, 3RU/3RB overload relay, or 3RH auxiliary or control relay. Siemens lists this order number in official documentation, such as the Betriebsanleitung 506081710000, confirming its role as a reference for the Sirius safety-kit family rather than a conventional device. Some refurbished modules sold under this code may not include the full set of manufacturer-provided accessories. In practice, 3ZX1012-0RH11-1AA1 anchors safety-relay configurations within the Sirius ecosystem rather than serving as a direct replacement for a typical relay module.