The 3UG5618-1CR20: The 90-690 V AC input range covers standard low-voltage three-phase networks from 110 V to 690 V phase-to-phase, including 400 V and 480 V systems common in industrial panels. The two changeover contacts (2 C/O) allow independent signaling of alarm and trip conditions or direct control of a contactor coil. Digital adjustability means thresholds for overvoltage, undervoltage, and asymmetry are set via potentiometers or DIP switches on the front face — no external trim pots needed. The phase sequence correction feature automatically swaps any two phases internally if the incoming rotation is wrong, which saves a field rewiring step on a motor starter.
Siemens 3UG5618-1CR20 Line Monitoring Relay, 90-690 V AC
MPN3UG5618-1CR20
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Siemens SIRIUS 3UG5 line monitoring relay, digitally adjustable, 3-phase 90-690 V AC, 15-70 Hz, 2 changeover contacts, screw terminals.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product family | Line monitoring |
| Parameter | Value |
|---|---|
| RoHS compliance | Since: 01-06-23 |
| REACH Art. 33 (SVHC disclosure) | Lead CAS-No. 7439-92-1 > 0,1 % (w / w) |
| Parameter | Value |
|---|---|
| Group code | R711 |
| Product group | 5885 |
| Product class | A: Standard product which is a stock item could be returned within the returns guidelines/period. |
| Export control regulations | AL : N / ECCN : N |
Product details
Frequently asked questions
What is the group code and product group for the 3UG5618-1CR20?
The group code is R711 and the product group is 5885.
MPN
3UG5618-1CR20