Siemens 3G-OTH-39653 — Technical Specifications
The SIEMENS IEC Thermal Overload Relay (MPN 3RU21161FB0) is a 3-pole thermal protection device in Frame Size S00, designed for use with SIRIUS contactors of the same frame size. It features a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. The relay includes integrated bimetallic elements, eliminating the need for separate thermal units, and does not offer phase loss sensitivity.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | 1NO/1NC, Frame Size S00, 3.5 A – 5 A |
| Brand | SIEMENS |
| Poles | 3 |
| Frame Size | S00 |
| Compatible Contactors | Frame Size S00 |
| Auxiliary Contact Form | 1NO/1NC |
| Maximum Voltage Rating | 690V AC |
| Phase Loss Sensitivity | No |
| Thermal Units Required | None (Relay Includes Integrated Bimetallic Elements) |
| Manufacturer Part Number | 3RU21161FB0 |
| Terminal Connection Type | Screw Terminals |
| Compatible Contactor Series | SIRIUS |