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Siemens 3RV2021-0DA10-0DA0 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-0DA10-0DA0 SIRIUS 3RV2 Motor Starter Protect

MPN3RV2021-0DA10-0DA0
Active

Siemens SIRIUS 3RV2 motor starter protector, size S0, circuit breaker for system protection, A-release 0.22...0.32 A, short-circuit release 4.2 A, screw terminal, standard switching capacity.

Siemens 3RV2021-0DA10-0DA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2021-0DA10-0DA0 — Specifications
ParameterValue
Group codeR711
Product group5333
Product classA: Standard product which is a stock item could be returned within the returns guidelines/period.
SeriesSIRIUS 3RV2 motor starter protectors
Export control regulationsAL : N / ECCN : EAR99
Compliance with the substance restrictions according to RoHS directiveSince: 01-10-09

Product details

The Siemens 3RV2021-0DA10-0DA0 is a SIRIUS 3RV2 motor starter protector in size S0, configured for system protection without phase failure protection. Its thermal overcurrent release (A-release) is set at 0.22...0.32 A, and the magnetic short-circuit release trips at 4.2 A. This means the breaker is sized for a small motor or transformer primary — the 4.2 A magnetic trip clears a hard fault fast, while the 0.22-0.32 A thermal band protects the downstream winding from sustained overload. Screw terminals, standard switching capacity.

The packaging dimensions — 101 x 52 x 104 mm — give the envelope for panel layout; allow clearance above and below for screw-terminal access and the manual reset actuator. Group code R711 and product group 5333 are Siemens internal cataloguing fields that help trace the part in their system if you need a cross-reference or a multi-year BOM freeze check.

Frequently asked questions

What is the closest pin-compatible alternative to 3RV2021-0DA10-0DA0 in this component family?

Within the SIRIUS 3RV2 family, a size S0 breaker with the same screw-terminal footprint but a different A-release range (e.g., 0.32...0.45 A) would be the nearest functional sibling. The mechanical interface — DIN-rail mount, terminal pitch, and auxiliary-contact slot — is shared across the size S0 platform.

Where can I buy 3RV2021-0DA10-0DA0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation does Siemens provide for 3RV2021-0DA10-0DA0?

RoHS compliance is confirmed since 01-10-09. REACH Article 33 candidate-list information is available from the manufacturer. Export Control Regulations are AL: N / ECCN: EAR99.

MPN
3RV2021-0DA10-0DA0