PRODUCT DESCRIPTION
SIEMENS 3RU5166-5FB1 - Thermal Overload Relay
The SIEMENS 3RU5166-5FB1 is a SIRIUS 3RU5 series thermal overload relay engineered for the electromechanical protection of three-phase AC motors against excessive current and phase failure. It integrates directly with SIRIUS 3RT2 contactors, providing essential motor protection in industrial control panels, pump stations, and conveyor systems. This device ensures operational continuity by preventing motor damage due to overload conditions.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3RU5
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT SETTING RANGE: 55-65 A
- TRIPPING CLASS: CLASS 10
- RATED OPERATIONAL VOLTAGE (Ue): Up to 690 V AC
- RATED INSULATION VOLTAGE (Ui): 690 V AC
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 6 kV
- PHASE: Three-phase
- MECHANICAL/PHYSICAL:
- SIZE: S2
- TERMINALS: Screw terminals for main and auxiliary circuits
- INTERFACE/CONTROL:
- AUXILIARY CONTACTS: 1 NO + 1 NC
- RESET FUNCTION: Manual and Automatic
- TEST FUNCTION: Integrated test button
- STOP FUNCTION: Integrated stop button
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- AMBIENT OPERATING TEMPERATURE: -20 to +60 degrees C
- COOLING METHOD: Natural convection
- MOUNTING STYLE: Direct mounting to SIRIUS 3RT2 contactors (Size S2) or stand-alone with adapter
- COMPATIBILITY/APPLICATION:
- MOTOR PROTECTION: Three-phase AC motors
- INTEGRATION: Compatible with SIEMENS SIRIUS 3RT2 contactors (Size S2)
- APPLICATIONS: Industrial motor control, pump systems, fan drives, conveyor belts, general machinery