The Siemens 3RU1146-4JB0 is an IEC-rated thermal overload relay designed to protect three-phase motors from overcurrent conditions. It is part of the Sirius family of motor protection devices offered by Siemens.
Key Features and Benefits
Thermal overload protection: The relay uses a bimetallic element to provide accurate thermal overload protection, preventing motor damage due to overheating.
Adjustable trip class: The trip class can be adjusted to match the motor's characteristics and application requirements.
Compact design: The compact size allows for easy installation in tight spaces.
Modular design: The modular design enables easy replacement of individual components.
Wide current range: Available in a wide range of current ratings to suit various motor sizes.
Easy to install and configure: The relay is easy to install and configure, reducing downtime.
Reliable performance: The 3RU1146-4JB0 is known for its reliable performance and long service life.
Technical Specifications
Type: Thermal overload relay
Mounting: DIN rail or panel mounting
Number of poles: 3-pole
Voltage: AC
Current range: 45-63A
Trip class: Adjustable
Standards: IEC 60947-4-1
Applications
The Siemens 3RU1146-4JB0 is widely used in various industries, including:
Industrial automation: Protection of motors in industrial machinery and equipment.
HVAC systems: Protection of motors in HVAC systems.
Pumping systems: Protection of motors in pumping applications.
Conveyor systems: Protection of motors in conveyor systems.
Precautions
Proper installation: Ensure the relay is installed correctly according to the manufacturer's instructions.
Correct wiring: Connect the relay to the motor and control circuit according to the wiring diagram.
Regular inspection: Inspect the relay regularly for signs of wear or damage.
Replacement: Replace the relay with an identical or equivalent part if it fails.
Note: This information is provided for general reference only and should not be considered a substitute for professional engineering advice. Always consult the product datasheet and relevant standards for specific application requirements.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
