3RV2021-1AA10§Circuit breaker size S0 for motor protection, CLASS 10 A-release 1.1...1.6 A N-release 21 A screw terminal Standard switching capacity

The Siemens 3RT2023-1BB44-3MA0 is based on a standard DC24V contactor and is equipped with 2NO+2NC non-removable auxiliary contacts manufactured in accordance with SUVA safety specifications, making it suitable for safety interlocking circuits.

The Siemens 3RT2023-1FB40 uses a DC24V coil and is equipped with plug-in diode suppression, threaded terminals, and 1NO+1NC auxiliary contacts, making it suitable for applications near sensitive electronic circuits.