Siemens 3G-OTH-40713 — Technical Specifications
The SIEMENS Overload Relay: Thermal Protection (MPN 3RU21264CB0) is an IEC thermal overload relay in Frame Size S0, designed for use with SIRIUS contactors of the same frame size. It features integrated bimetallic elements, screw terminals, and a 1NO/1NC auxiliary contact form, with a maximum voltage rating of 690V AC. This relay does not include phase loss sensitivity and requires no separate thermal units.
Technical Specifications
| Parameter | Value |
|---|---|
| Type | 1NO/1NC, Frame Size S0, 17 A – 22 A |
| Brand | SIEMENS |
| Poles | 3 |
| Frame Size | S0 |
| Compatible Contactors | Frame Size S0 |
| 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 | 3RU21264CB0 |
| Terminal Connection Type | Screw Terminals |
| Compatible Contactor Series | SIRIUS |