The Siemens 3RV1923-2GA10 is a molded-plastic ISO installation enclosure with an integrated EMERGENCY-STOP rotary operating mechanism rotated by 90°, fitted with a metric cable gland. It is designed as an installation housing — not a standalone contactor — meaning it mounts directly into a panel or machine frame to provide a local emergency-off station.
This is a molded-plastic enclosure, not a contactor or motor starter — the rotary operator is the EMERGENCY-STOP actuation point, and the housing provides the mechanical mounting and cable entry via the metric gland. There is no UL or CSA approval on this variant, so if your panel requires UL 508A listing, you need the approved version. The 90° rotation means the operator shaft turns a quarter-turn to actuate the switch contacts; verify your door cutout and mounting depth match the standard SIRIUS enclosure footprint before wiring.