Product Description
Siemens 3RU2136-4RB0 thermal overload relay for mounting on Sirius 3RT203 size S2 contactors (3RT2038) and is adjustable from 70A-80A. This Class 10 overload (trips in 10 seconds or less) has phase loss protection, manual or automatic reset and two auxiliary contacts, one normally open and one normally closed. If you are looking for a lower AMP range than the 3RU2136-4RB0 offers, you can use the 3RU2136-4KB0 which adjusts down to 62 AMPS.
| AMP Range | 70 to 80 AMPS |
| Trip Class | 10 (10 seconds or less) |
| Phase Loss Sensitivity | Yes |
| Auxiliaries | 1 N.O. / 1 N.C. |
Click here for a PDF file on this Siemens 3RU2136 thermal overload relay
The 3RU2136 thermal overload relays feature phase failure protection for the purpose of minimizing the heating of the load during single- phase operation as a result of phase failure.
It is possible to switch between manual resetting and automatic resetting by depressing and rotating the blue button (RESET button). When manual resetting is selected, a reset can be performed directly on the device by pressing the RESET button. Remote resetting can be implemented by using he mechanical and electrical RESET modules from the range of accessories. When the blue button is set to Automatic RESET, the relay will be reset automatically.
The 3RU2136 thermal overload relays are suitable for direct mounting on the 3RT203 contactors. They can also be mounted as single units if the appropriate adapters are used.
