The Siemens 3RV1902-1AV00-0FQ0 is an undervoltage release for SIRIUS 3RV circuit-breakers. It trips the breaker when supply voltage drops below the release threshold, protecting downstream loads from undervoltage conditions — a common requirement on motor circuits and conveyor drives where a restart after a sag could cause mechanical damage or unsafe restart. Rated for 400V AC at 50Hz, it mounts directly onto the breaker body, size S00 up through S3.
Siemens 3RV1902-1AV00-0FQ0 Undervoltage Release, 400V AC
MPN3RV1902-1AV00-0FQ0
Siemens SIRIUS 3RV1902-1AV00-0FQ0 undervoltage release, 400V AC 50Hz, for circuit-breaker sizes S00 through S3, FA. ABB Fa. Lovato.
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What is the listed description of 3RV1902-1AV00-0FQ0?
The official description reads: Undervoltage release 400V AC, 50Hz, for circuit-breaker, size S00...S3, FA. ABB Fa. Lovato.
MPN
3RV1902-1AV00-0FQ0