The Siemens 3UG5825-2AA40 is a digital residual current monitoring relay that works with a current transformer (3UL23) to detect earth leakage. It covers an adjustment range of 0.03 to 40 A and runs on a 24 V DC supply. Both ON delay and tripping delay are independently settable from 0.1 to 999.9 s, and the single changeover contact is terminated on spring-loaded terminals.

Siemens 3UG5825-2AA40 Residual Current Monitoring Relay, 0.0
MPN3UG5825-2AA40
Active
Siemens 3UG5825-2AA40, Residual current monitoring relays, digital monitoring relay, 0.03-40 A, 24 V DC, spring-loaded terminal.
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
Specifications
Identification
| Parameter | Value |
|---|---|
| Product family | Residual current monitoring relays |
Approvals
| Parameter | Value |
|---|---|
| RoHS compliance | Since: 01-06-23 |
| REACH Art. 33 (SVHC disclosure) | Lead CAS-No. 7439-92-1 > 0,1 % (w / w) |
Other specifications
| 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 : EAR99 |
Product details
Frequently asked questions
What compliance documentation is available for this relay?
RoHS compliance is documented since 1 June 2023. REACH Art. 33 duty-to-inform is declared for lead (CAS 7439-92-1) above 0.1% w/w. Export control is AL:N / ECCN:EAR99.
What are the key ratings of the 3UG5825-2AA40?
Adjustment range 0.03–40 A, supply voltage 24 V DC, ON delay and tripping delay 0.1–999.9 s, 1 changeover contact with spring-loaded terminals.
MPN
3UG5825-2AA40