7UM6211-2BB02-0AA0/EE
This 7UM6211-2BB02-0AA0/EE is a high-performance Siemens SIPROTEC 4 numerical protection relay tailored for generators, motors and transformers. It adopts 5A current transformer input and 100-125V voltage transformer input, supporting 50Hz and 60Hz dual frequency operation. Equipped with 24V DC auxiliary power supply, the device features low power consumption and stable running performance.
Built with 1/2 19-inch 4U compact housing, it integrates 8 current channels, 4 voltage channels, 7 digital inputs and 12 digital outputs, plus dual PT100 temperature detection ports. It delivers precise measurement accuracy up to ±0.5% and reliable protection action.
Covering complete protection logics including overcurrent, earth fault, overvoltage, underfrequency, thermal overload and reverse power, it conforms to IEC international standards. Multiple communication interfaces such as Ethernet, RS485 and USB enable seamless system connection. With wide temperature adaptability and solid mechanical structure, this relay ensures long-term safe and stable operation in industrial power systems.
| Parameter | Value | Remarks |
|---|---|---|
| Manufacturer | Siemens | SIPROTEC 4 series |
| Model | 7UM6211-2BB02-0AA0/EE | Full order number |
| Type | Multifunction machine protection relay | Generator/motor/transformer |
| Rated frequency | 50 / 60 Hz | Auto-adaptive |
| Rated current In | 5 A | CT secondary, low sensitivity |
| Rated voltage Un | 100–125 V AC | VT secondary |
| Auxiliary supply | 24 V DC (19.2–28.8 V) | Or 110–250 V DC / 115–230 V AC |
| Power consumption | ≤ 15 W | Typical |
| Housing | 1/2 19”, 4U | 7DI / 12DO, 1 ready contact |
| Dimensions (W×H×D) | 210 × 177 × 235 mm | Approx. |
| Weight | 8.2 kg | Approx. |
| Protection class | IP20 (front IP50) | IEC 60529 |
| Operating temperature | -20 °C to +60 °C | IEC 60068-2-1 |
| Storage temperature | -30 °C to +70 °C | |
| Standards | IEC 60255, IEC 61812-1, EN 50081/50082 | CE, UL, cUL, CSA, GL certified |
