BOM / RFQ

Siemens 3RA1921-1B

MPN3RA1921-1B

Link module Electrical and mechanical for 3RV1.2 and 3RT1.2 DC operation (multi-unit packaging)!!! Phased-out product!!! Successor is SIRIUS 3RA2 Preferred successor type is >>3RA2921-1B<<

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Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RA1921-1B — Identification
Parameter	Value
Product designation	link module
Brand	SIRIUS
Product design / construction	for 3RV1.2 and 3RT1.2, DC actuation
Circuit-breaker size	S0

3RA1921-1B — Other specifications
Parameter	Value
Size of contactor	S0

Pricing & Availability

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*Sample & small orders welcome — quoted per order; a small handling charge may apply below MOQ.

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About the brand

Siemens

Siemens parts are sourced across every condition — factory-new current-production lines, new-old-stock, surplus, refurbished-and-bench-tested and used clean-pull units — through our independent distributor channels; each listing states its condition. Request a quote for live pricing, availability, and lead times.

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Siemens Series Alternatives & Replacements

Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.

Siemens 3RA1921-1B

Specifications

6ES7212-1AE40-0XB0

6ES7211-1AE40-0XB0

6ES7211-1HE40-0XB0

6ES7217-1AG40-0XB0

6ES7211-1BE40-0XB0

6ES7212-1BE40-0XB0