
SIEMENS 3RU2126-1DB0 THERMAL OVERLOAD RELAY New
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Engineered for dependable motor protection in industrial control panels, the Siemens 3RU2126-1DB0 thermal overload relay combines precise protection with seamless integration into SIRIUS starters. It safeguards three-phase motors against overload conditions and phase loss, delivering consistent performance in automation and MCC applications.
Built on proven bimetal technology, this relay offers an adjustable current setting range to match motor full-load current, trip class 10 for standard duty starting, and phase-failure sensitivity for reliable tripping. Manual or automatic reset can be selected to suit your control philosophy, while test and stop functions, clear scale markings, and robust screw terminals streamline commissioning. The 3RU2 form factor mounts directly to SIRIUS S0 contactors or on DIN rail with an adapter, aligning with IEC/EN 60947-4-1 for straightforward compliance.
Whether you are assembling new feeders or upgrading installed equipment, the 3RU2126-1DB0 helps reduce downtime and protect assets, all within a compact footprint that fits modern panels; and for added peace of mind in demanding operations, it is supplied as part of the Siemens SIRIUS system with a 1-year warranty.
- Brand: Siemens
- Series: SIRIUS 3RU2
- Model: 3RU2126-1DB0
- Trip class: 10
- Mounting: Direct to SIRIUS S0 contactors or DIN rail (with adapter)
- Reset modes: Manual or automatic
- Auxiliary contacts: 1 NO + 1 NC
- Connection type: Screw terminals