3WT8121-7UG00-0AA1
Product ID:143684
Updated: 2026/7/10

Key Features
- 1Deliver reliable power distribution with a 1250A current rating.
- 2Meet international safety standards including CE certification.
- 3Protect against overcurrent and short-circuit with 66kA Icu.
- 4Suit a wide range of applications up to 500V AC.
- 5Simplify installation and maintenance with modular design.
Need a quote? Enter your quantity and get pricing fast.
Qty
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Rated Voltage (V) | 500 | Description | 3WT1, 1250A ETU45WT F/3P, 66kA; Electric Operation Closing AC/DC220V; Breaking Coil AC/DC220V; Alarm Contacts; Door Frame; 2NO+2NC |
| Icw(kA) | 50 | Rated Service Short Circuit Breaking Capacity Ics(kA)@400V or 415V | 66 |
| Control Voltage | AC/DC220V | Number of Poles | 3P |
| Mounting Method | F: Fixed Mounting | Trip Unit | ETU45WT【LSIN with LCD Display】 |
| Rated Current In(A) | 1250 | Rated Ultimate Breaking Capacity Icu(kA)@400V or 415V | 66 |
| Breaking Rating | S:66kA | Specifications | 3WT1【400-1600A】 |
| Lifecycle | Delivery Release (PM300) | Country of Origin | China |
| ECCN | N | AL | N |
| Model Number | 3WT8121-7UG00-0AA1 |
Specifications may be subject to change without notice
Still deciding on 3WT8121-7UG00-0AA1?
Our engineers can confirm stock, price, and lead time for this Siemens part.
Get a no-obligation quote in 1 minute.
