The Siemens 3RV2021-4NA10-0DA0 is a SIRIUS 3RV2 motor starter protector — a circuit breaker sized S0 for system protection without phase failure protection. Its A-release is set for 23…28 A, and the short-circuit release trips at 364 A. Screw terminals and standard switching capacity make it a direct panel fit for motor branch circuits in industrial control cabinets.
Compliance and traceability
RoHS compliant since 01-10-09. REACH Article 33 duty-to-inform applies: the part contains lead titanium zirconium oxide (CAS-No. 12626-81-2) above 0.1% w/w. The product group is 5333, group code R711.