Siemens SIRIUS 3RU2 thermal overload relay
3RU2146-4MB0
SIRIUS 3RU2 thermal overload relay, 80–100 A, size S3, CLASS 10, screw terminals. Direct mounting to matching 3RT204 contactor; separate mounting support available.
- Range
- 3RU2 · S3
- Current setting
- 80–100 A
Product specification
3RU2146-4MB0
SIRIUS 3RU2 thermal overload relay, 80–100 A, size S3, CLASS 10, screw terminals. Direct mounting to matching 3RT204 contactor; separate mounting support available.
Dimensions & specifications
Choose the relay that fits the selected contactor and set it to the motor nameplate current. Frame compatibility is shown on each product.
Accessories & related parts
3RU2146-4MB0 — specifications & documents
SIRIUS 3RU2 thermal overload relay, 80–100 A, size S3, CLASS 10, screw terminals. Direct mounting to matching 3RT204 contactor; separate mounting support available.
| Current setting | 80–100 A |
|---|---|
| Frame size | S3 |
| Trip class | 10 |
| Matching contactor | 3RT204… · S3 |
| Auxiliary contacts | 1 NO + 1 NC |
| Reset | Manual / automatic |
| Connection | Screw terminals |
| Mounting | Direct contactor mounting; stand-alone support selected separately |
| Motor selection | Use the motor nameplate current. Motor kW alone does not determine the overload setting. |
Related parts
Fits these parts
- 3RT2046-1NB30 SIRIUS S3 power contactor, 45 kW at 400 V, 95 A AC-3 / AC-3e, 3 pole. 20–33 V AC/DC (includes 24 V DC) coil, 1 NO + 1 NC, screw terminals.
- 3RT2046-1AC20 SIRIUS S3 power contactor, 45 kW at 400 V, 95 A AC-3 / AC-3e, 3 pole. 24 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2046-1AG20 SIRIUS S3 power contactor, 45 kW at 400 V, 95 A AC-3 / AC-3e, 3 pole. 110 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2046-1AL20 SIRIUS S3 power contactor, 45 kW at 400 V, 95 A AC-3 / AC-3e, 3 pole. 230 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2047-1NB30 SIRIUS S3 power contactor, 55 kW at 400 V, 110 A AC-3 / AC-3e, 3 pole. 20–33 V AC/DC (includes 24 V DC) coil, 1 NO + 1 NC, screw terminals.
- 3RT2047-1AC20 SIRIUS S3 power contactor, 55 kW at 400 V, 110 A AC-3 / AC-3e, 3 pole. 24 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2047-1AG20 SIRIUS S3 power contactor, 55 kW at 400 V, 110 A AC-3 / AC-3e, 3 pole. 110 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2047-1AL20 SIRIUS S3 power contactor, 55 kW at 400 V, 110 A AC-3 / AC-3e, 3 pole. 230 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.