The 3RV1902-1AF00-0FJ0: This release mounts directly onto the side of a 3RV circuit-breaker (S00, S1, S2, or S3 frame). It trips the breaker when supply voltage drops below its dropout threshold, providing undervoltage protection for motor or load circuits. The 110V AC 50 Hz coil is standard for European control panels; verify that your control transformer matches the frequency and voltage before installation.

Siemens 3RV1902-1AF00-0FJ0 Undervoltage Release, 110V AC 50H
MPN3RV1902-1AF00-0FJ0
Siemens SIRIUS 3RV1902-1AF00-0FJ0 undervoltage release, 110V AC 50Hz, for circuit-breaker sizes S00 to S3, by Benedikt & Jaeger.
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
Product details
Frequently asked questions
What is 3RV1902-1AF00-0FJ0 used for?
It is an undervoltage release for Siemens SIRIUS 3RV circuit-breakers in frame sizes S00 through S3, operating at 110V AC 50 Hz. It trips the breaker when supply voltage falls below the dropout threshold.
Where can I buy 3RV1902-1AF00-0FJ0?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
3RV1902-1AF00-0FJ0