The 3RV2922-4CV1: Snap-on mounting onto the 3RV2 breaker — no tools needed. The release fits all frame sizes S00, S0, S2, S3. Depth is 68 mm, height 90 mm, width 19 mm. The ring terminal lug connection accepts standard ring lugs; strip length and crimp tool follow the lug manufacturer's spec. Pollution degree 3 (industrial environment with conductive pollution). Maximum break time is 20 ms. The short-circuit protection for the release circuit should be a fuse per the design.
The 2 NO leading contacts provide an early open signal before the main breaker trips — useful for sequencing downstream contactors or drives off before the power circuit drops. The release is designed for use with motor circuit breakers (suitability: motor circuit breaker). Reference code per EN 61346-2 is F. Substance prohibitance date per RoHS-like compliance is 05/01/2012.