PRODUCT DESCRIPTION
SIEMENS 3RB3046-1B0 - Electronic Overload Relay
This device is an electronic overload relay from the SIEMENS SIRIUS 3RB30 series, engineered for motor protection in industrial control applications. It provides thermal overload, phase failure, and phase unbalance protection for three-phase AC motors. Designed for direct mounting onto SIRIUS contactors, it integrates into motor feeder circuits to prevent damage from excessive current draw.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3RB30
- COMPONENT TYPE: Electronic Overload Relay
- ELECTRICAL SPECS:
- CURRENT SETTING RANGE: 17-70 A
- OPERATIONAL VOLTAGE: Up to 690 VAC (main circuit)
- AUXILIARY CONTACTS: 1 NO + 1 NC
- RATED INSULATION VOLTAGE: 690 V
- RATED IMPULSE WITHSTAND VOLTAGE: 6 kV
- MECHANICAL/PHYSICAL:
- MOUNTING TYPE: Direct mounting to SIEMENS SIRIUS 3RT2 contactors
- RESET FUNCTION: Manual-local
- FORM FACTOR: Modular, compact industrial control device
- INTERFACE/CONTROL:
- TRIPPING CLASS: Class 10
- INDICATION: Mechanical trip indicator
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals)
- AMBIENT OPERATING TEMPERATURE: -25 to +60 °C
- COOLING METHOD: Natural convection
- COMPATIBILITY/APPLICATION:
- COMPATIBLE CONTACTORS: SIEMENS SIRIUS 3RT2 contactors
- APPLICATION: Overload and phase failure protection for three-phase AC motors in general industrial machinery, pumps, fans, and conveyor systems.