The Siemens 3UG5825-1AA40 is a digital residual current monitoring relay designed for use with an external current transformer (type 3UL23). It covers an adjustment range from 0.03 A to 40 A, making it suitable for detecting ground faults or leakage currents in industrial AC circuits. The relay operates on a 24 V DC supply and provides both an ON delay and a tripping delay, each independently settable from 0.1 s to 999.9 s. Output is via a single changeover contact with screw terminals.
Siemens 3UG5825-1AA40 Residual Current Monitoring Relay, 0.0
MPN3UG5825-1AA40
Active
Siemens 3UG5825-1AA40, Residual current monitoring relays, digital monitoring relay, adjustment range 0.03...40 A, 24 V DC, ON delay and tripping delay 0.1..999.9 s, 1 changeover contact, screw terminal.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product family | Residual current monitoring relays |
| 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 : EAR99 |
Product details
Frequently asked questions
What compliance documentation does Siemens provide for this relay?
RoHS compliance is confirmed from 01 June 2023. The part also has a REACH Article 33 declaration for lead (CAS 7439-92-1) above 0.1% w/w. Export control is AL: N / ECCN: EAR99.
What is the adjustment range and supply voltage?
The adjustment range for residual current is 0.03 A to 40 A. Supply voltage is 24 V DC. Both ON delay and tripping delay are settable from 0.1 s to 999.9 s.
MPN
3UG5825-1AA40