Siemens SIRIUS 3RU2 thermal overload relay
3RU2136-4HB0
SIRIUS 3RU2 thermal overload relay, 40–50 A, size S2, CLASS 10, screw terminals. Direct mounting to matching 3RT203 contactor; separate mounting support available.
- Range
- 3RU2 · S2
- Current setting
- 40–50 A
Product specification
3RU2136-4HB0
SIRIUS 3RU2 thermal overload relay, 40–50 A, size S2, CLASS 10, screw terminals. Direct mounting to matching 3RT203 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
3RU2136-4HB0 — specifications & documents
SIRIUS 3RU2 thermal overload relay, 40–50 A, size S2, CLASS 10, screw terminals. Direct mounting to matching 3RT203 contactor; separate mounting support available.
| Current setting | 40–50 A |
|---|---|
| Frame size | S2 |
| Trip class | 10 |
| Matching contactor | 3RT203… · S2 |
| 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
- 3RT2036-1NB30 SIRIUS S2 power contactor, 22 kW at 400 V, 51 A AC-3 / AC-3e, 3 pole. 20–33 V AC/DC (includes 24 V DC) coil, 1 NO + 1 NC, screw terminals.
- 3RT2036-1AC20 SIRIUS S2 power contactor, 22 kW at 400 V, 51 A AC-3 / AC-3e, 3 pole. 24 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2036-1AG20 SIRIUS S2 power contactor, 22 kW at 400 V, 51 A AC-3 / AC-3e, 3 pole. 110 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2036-1AL20 SIRIUS S2 power contactor, 22 kW at 400 V, 51 A AC-3 / AC-3e, 3 pole. 230 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2037-1NB30 SIRIUS S2 power contactor, 30 kW at 400 V, 65 A AC-3 / AC-3e, 3 pole. 20–33 V AC/DC (includes 24 V DC) coil, 1 NO + 1 NC, screw terminals.
- 3RT2037-1AC20 SIRIUS S2 power contactor, 30 kW at 400 V, 65 A AC-3 / AC-3e, 3 pole. 24 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2037-1AG20 SIRIUS S2 power contactor, 30 kW at 400 V, 65 A AC-3 / AC-3e, 3 pole. 110 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2037-1AL20 SIRIUS S2 power contactor, 30 kW at 400 V, 65 A AC-3 / AC-3e, 3 pole. 230 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2038-1NB30 SIRIUS S2 power contactor, 37 kW at 400 V, 80 A AC-3 / AC-3e, 3 pole. 20–33 V AC/DC (includes 24 V DC) coil, 1 NO + 1 NC, screw terminals.
- 3RT2038-1AC20 SIRIUS S2 power contactor, 37 kW at 400 V, 80 A AC-3 / AC-3e, 3 pole. 24 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2038-1AG20 SIRIUS S2 power contactor, 37 kW at 400 V, 80 A AC-3 / AC-3e, 3 pole. 110 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.
- 3RT2038-1AL20 SIRIUS S2 power contactor, 37 kW at 400 V, 80 A AC-3 / AC-3e, 3 pole. 230 V AC, 50/60 Hz coil, 1 NO + 1 NC, screw terminals.