Siemens 3G-OTH-41745 — Technical Specifications
The SIEMENS Overload Relay: Thermal Protection (SKU 499K17, MPN 3RU21364FB0) is an IEC thermal overload relay with a Frame Size S2, rated for 28 A – 40 A and a maximum voltage of 690V AC. It features 1NO/1NC auxiliary contacts, screw terminals, and integrated bimetallic elements, eliminating the need for separate thermal units. This relay is compatible with SIRIUS contactors of Frame Size S2 and does not include phase loss sensitivity.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | 1NO/1NC, Frame Size S2, 28 A – 40 A |
| Brand | SIEMENS |
| Poles | 3 |
| Frame Size | S2 |
| Compatible Contactors | Frame Size S2 |
| 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 | 3RU21364FB0 |
| Terminal Connection Type | Screw Terminals |
| Compatible Contactor Series | SIRIUS |