Siemens 3RV1946-2B Rotary Handle Mechanism SMP S3

Siemens 3RV1946-2B is a door-coupling rotary operating mechanism for Siemens S3-size circuit breakers, featuring a gray handle and direct rotary actuation to operate the breaker door.

The unit attaches by screws in a 75 mm by 75 mm mounting footprint, with a 78 mm depth and a 300 mm overall length, driven by a 40 mm-diameter rotary actuator, and is rated for up to 15 operations per hour under operating temperatures from -20 to +70 C.

This device is part of the Siemens SIRIUS 3RV2 family; current catalogs show it as phased out with a recommended successor 3RV2946-2B (and 3RV2946-3B for harsh conditions), so check current availability with your Siemens distributor.