PRODUCT DESCRIPTION
SIEMENS 3RU2126-4DB0 - Thermal Overload Relay
This component is a SIEMENS SIRIUS 3RU2 series thermal overload relay, designed for reliable protection of three-phase AC motors against thermal overload and phase failure. It integrates electromechanical thermal sensing technology for precise current monitoring and features a manual and automatic reset function. This device is primarily utilized in industrial motor control circuits, pump applications, conveyor systems, and general machinery requiring robust motor protection.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3RU2
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT SETTING RANGE: 17.0 - 22.0 A
- OPERATING VOLTAGE (MAIN CIRCUIT): Up to 690 V AC
- AUXILIARY CONTACTS: 1 NO + 1 NC
- RATED INSULATION VOLTAGE: 690 V
- RATED IMPULSE WITHSTAND VOLTAGE: 6 kV
- MECHANICAL/PHYSICAL:
- SIZE: S0
- CONNECTION TYPE: Screw terminals for main and auxiliary circuits
- INTERFACE/CONTROL:
- RESET FUNCTION: Manual and Automatic
- TRIP CLASS: CLASS 10
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (Terminals)
- AMBIENT OPERATING TEMPERATURE: -20 to +60 °C
- MOUNTING STYLE: Direct mounting onto SIEMENS SIRIUS 3RT2 contactors (Size S0) or stand-alone installation
- COMPATIBILITY/APPLICATION:
- COMPATIBILITY: SIEMENS SIRIUS 3RT2 contactors (Size S0)
- APPLICATION: Overload and phase failure protection for three-phase AC motors in industrial control panels, machinery, and process automation systems.