Siemens 3G-OTH-42298 — Technical Specifications
The SIEMENS Overload Relay: Thermal Protection (SKU 499K20, MPN 3RU21364JB0) is an IEC thermal overload relay in Frame Size S2, compatible with SIRIUS contactors of the same frame size. It features a 1NO/1NC auxiliary contact form, a maximum voltage rating of 690V AC, and screw terminals. The relay includes integrated bimetallic elements, so no separate thermal units are required, and it does not offer phase loss sensitivity.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | 1NO/1NC, Frame Size S2, 54 A – 65 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 | 3RU21364JB0 |
| Terminal Connection Type | Screw Terminals |
| Compatible Contactor Series | SIRIUS |