Description
ABB 1TNA920733R0001 is a low-voltage intelligent motor management and protection relay belonging to ABB M101 series, an integrated all-in-one motor control unit designed for three-phase asynchronous motor monitoring, overload protection, fault diagnosis and fieldbus communication. This unit integrates current measurement, thermal overload protection, phase loss/phase unbalance, earth fault, stall and start-up overcurrent protection, with built-in Modbus RTU communication interface for data upload to PLC/DCS systems. As a core motor protection spare part for low-voltage power distribution cabinets, 1TNA920733R0001 supports adjustable motor current range, local status LED indicators and parameter setting via front panel buttons, widely used in water supply pumps, fans, compressors, conveyor motors and industrial workshop low-voltage motor control loops.
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- Brand: ABB
- Model PN: 1TNA920733R0001
- Availability: Original factory sealed new stock, fully bench-tested refurbished units available
- Delivery Time: 1–4 working days for in-stock inventory; 4–7 weeks for factory backorder shipments
- Guarantee: 12-month full warranty valid from shipment date
- Condition: Brand new unopened OEM / Fully calibrated, communication and protection function tested refurbished
- Series: M101 Intelligent Motor Protection Relay
- Rated Control Supply: 24VDC auxiliary power supply
- Motor Current Measuring Range: Wide adjustable current range for small & medium three-phase motors
- Built-in Protection Functions: Thermal overload, phase failure, phase unbalance, locked rotor, earth leakage fault, long start overcurrent
- Communication Interface: RS485 Modbus RTU fieldbus
- Local Operation: Front panel digital display + setting buttons, RUN/FAULT LED status lights
- Digital I/O: Multiple DI/DO terminals for external interlock and fault signal output
- Operating Temperature: -20°C ~ +60°C cabinet ambient
- Storage Temperature: -40°C ~ +85°C
- Humidity Tolerance: 5%–95% RH non-condensing environment
- Mounting Standard: Standard DIN rail mounting inside low-voltage distribution cabinet
- Protection Grade: IP20 front panel, IP00 rear wiring terminals
- Net Weight: 0.36kg
- Compliance Certifications: IEC 60947, CE, UL industrial low-voltage safety certification
Key Features & Advantages (3 Points)
- Full multi-dimensional motor fault protection logic, automatically cuts off motor control loop to avoid winding burnout caused by overload, phase loss or stall, greatly extending motor service life
- Native Modbus RTU communication, real-time upload motor running current, temperature, fault codes and operating status to upper DCS/SCADA for remote centralized monitoring
- Compact DIN rail integrated design, integrates measurement, protection and communication in single module, saves cabinet space and reduces additional signal acquisition modules
Industry Application Scenarios (4 Points)
- Water treatment plants: Sewage pumps, clean water booster pump motor protection and remote monitoring
- HVAC & ventilation industry: Cooling tower fans, air supply/exhaust fan motor control cabinets
- Mining & metallurgy workshops: Conveyor belt, crusher and small compressor motor protection units
- Chemical & packaging factories: Process circulation pumps, feeding conveyor motor intelligent monitoring control
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