Siemens 3RV1926-0B Rotary Drive

Siemens 3RV1926-0B Rotary Drive is a door-coupling rotary operating mechanism that mechanically actuates the door of Siemens Sirius 3RV2 circuit-breaker assemblies. Built for panel- or cabinet-mount installations, it provides durable, repeatable door motion suitable for industrial environments. The unit offers IP65 protection against dust and water, helping maintain reliable operation in harsh conditions. A 130 mm drive shaft length is standard for the 3RV1926 line, with the 0B, 0C, and 0M variants sharing this dimension to preserve mounting geometry and compatibility with typical Sirius 3RV2 door-link systems. This rotary drive is designed to integrate with Siemens protection and control devices to streamline door actuation without a separate hand-operated mechanism, enabling consistent opening and closing sequences in the switchgear assembly. The 0B designation indicates a specific mechanical configuration and mounting interface; other variants in the family (such as 0C and 0M) use the same shaft length but may differ in hardware or mounting details. Note that this part is a door-coupling rotary operating mechanism rather than a complete circuit breaker, so verifying exact fit to your breaker frame and installation arrangement is essential before purchase.