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Siemens 3RV2021-0KA20-Z X95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-0KA20-Z X95 Motor Starter Protector, 0.9-1.2

MPN3RV2021-0KA20-Z X95
Active

Siemens SIRIUS 3RV2 motor starter protector, size S0, Class 10, A-release 0.9...1.25 A, N-release 16 A, spring-type terminal, standard switching capacity.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Specifications

3RV2021-0KA20-Z X95 — 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 : N
Compliance with the substance restrictions according to RoHS directiveSince: 01-10-09

Product details

The Siemens 3RV2021-0KA20-Z X95 is a SIRIUS 3RV2 motor starter protector in size S0, rated for Class 10 motor protection with an adjustable thermal overload (A-release) covering 0.9 to 1.25 A and a fixed magnetic short-circuit release (N-release) at 16 A. The 16 A magnetic release handles bolted faults upstream of the contactor; coordination with a downstream contactor (e.g., SIRIUS 3RT2) keeps let-through energy within the contactor's rated making capacity.

Production status is active per Siemens' current lifecycle designation — no end-of-life notification or last-time-buy window on this order code. RoHS compliance dates to October 1, 2009, and REACH Article 33 candidate-list information is available on request.

Sourcing

This is a current-production Siemens catalog item, sourced through our independent distribution network. Submit an RFQ for the quantity you need — we confirm availability and current pricing at quote time. The standard packaging unit is a single piece (reusable bulk packaging in packs of 35 for volume orders).

Frequently asked questions

Where can I buy the 3RV2021-0KA20-Z X95 and get a price?

We source this active Siemens part to order through our distribution network. Send an RFQ with your target quantity; we confirm availability and pricing at quote time.

What do the A-release and N-release ratings mean on this motor protector?

The A-release (0.9-1.25 A) is the adjustable thermal overload element — set it to the motor's full-load current within that window. The N-release (16 A) is the fixed magnetic short-circuit trip; it clears bolted faults above that threshold independently of the thermal setting.

MPN
3RV2021-0KA20-Z X95