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Home > Electrical & Electronics > Electrical Control System > ABB REM620A_F NAMBBABA33E5BNN1XF Motor Protection and Control Relays

ABB REM620A_F NAMBBABA33E5BNN1XF Motor Protection and Control Relays

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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other

Certification:

Function:

Other, Global universal model

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

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Port of Shipment:

guizhou

Delivery Detail:

5 days

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Material Other

Certification CE

Function Other, Global universal model

Condition New

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

I. Core Product Positioning

The ABB REM620A_F NAMBBABA33E5BNN1XF Motor Protection and Control Relay is an intelligent protection and control device specifically designed for medium and high-voltage (1kV-35kV) industrial motors. It is highly compatible with key motor-driven equipment such as pumps, fans, compressors, and rolling mills in industries including petrochemicals, electric power, metallurgy, and mining. Integrating comprehensive protection functions, precise condition monitoring, and flexible control logic, it can quickly cut off the power supply to prevent equipment damage when the motor encounters faults such as overload, short circuit, and locked rotor. Meanwhile, it collects real-time motor operation data and supports predictive maintenance, serving as a core electrical component to ensure the safe, efficient, and long-cycle operation of industrial motors.

II. Core Protection Functions and Advantages1. Full-Scenario Fault Protection, Covering the Entire Motor Operation Cycle

Basic overload protection: Adopts an inverse-time overload curve (complying with IEC 60947-4-1 standard). The overload multiple (1.05Iₙ-8Iₙ) and action time can be flexibly configured according to the motor's rated current (Iₙ), adapting to the thermal characteristics of different types of motors (e.g., squirrel-cage and wound-rotor induction motors) and preventing winding burnout caused by long-term motor overload. It also features an overload pre-alarm function, which issues an alarm when the load reaches 5%-10% below the protection threshold, reserving processing time for operation and maintenance personnel.
Short-circuit and abnormal operation protection:

Short-circuit protection: The instantaneous action current can be set to 2Iₙ-10Iₙ, with an action time of
Locked rotor protection: Triggers protection within 1-5 seconds when a sudden drop in motor speed (accompanied by a sudden increase in current) is detected, applicable to scenarios such as pump jamming and fan impeller seizing.
Phase loss/unbalance protection: Monitors the three-phase current unbalance degree in real time (adjustable from 0% to 50%). When one phase is lost or the difference between three-phase currents exceeds the limit, it acts with a delay of 0.5-10 seconds, avoiding winding overheating caused by motor operation under phase loss.
Earth fault protection: Supports residual current-based (compatible with zero-sequence CT) or additional DC-based earth detection. The protection current is adjustable from 0.1A to 10A, with an action time of

Special working condition protection:

Under-voltage/over-voltage protection: The voltage monitoring range is 60%-120% Uₙ, and the action time is adjustable from 1 to 60 seconds. It adapts to power grid voltage fluctuations, preventing motor overload under low voltage or insulation breakdown under high voltage.
Long startup time protection: Sets the allowable startup time of the motor (5-60 seconds). If the current does not drop below the rated value during startup, the power supply is automatically cut off to prevent locked rotor or startup circuit faults.
Thermal memory function: Retains motor thermal accumulation data after power failure (memory time adjustable from 0 to 30 minutes), avoiding cumulative overheating caused by frequent motor startup and shutdown, which conforms to the actual needs of motor thermal protection.

2. High-Precision Monitoring and Condition Analysis

Multi-dimensional data collection: Collects real-time key parameters including three-phase current (accuracy ±0.2% FS), three-phase voltage (accuracy ±0.2% FS), power factor, active/reactive power, winding temperature (compatible with PT100/RTD sensors, accuracy ±0.5℃), and bearing temperature. The sampling frequency reaches 10kHz, enabling capture of transient states such as motor startup and sudden load changes.
Trend analysis and early warning: Built-in data recording function (storage capacity ≥1000 event records, including waveform data 10 seconds before and 5 seconds after a fault). It supports trend curve analysis of parameters such as current and temperature (cycle adjustable from 1 minute to 1 hour). When parameters deviate from the normal range (e.g., continuous current rise or slow temperature increase), preventive early warnings are triggered, helping to shift from "fault repair" to "predictive maintenance".
Motor health assessment: By continuously monitoring motor vibration (requires external vibration sensor), insulation resistance (requires external insulation monitoring module), air gap magnetic field, and other data, combined with ABB's patented motor health algorithm, it generates a health status score ranging from 0 to 100. This score intuitively reflects potential issues such as motor insulation aging and bearing wear, extending the motor's service life.

III. Flexible Control and System Integration Capabilities1. Diversified Control Logic and Operation Modes

Control mode adaptation: Supports multiple startup methods such as direct startup, star-delta startup, auto-transformer reduced-voltage startup, and soft starter/inverter linkage. It can control executive components such as contactors and circuit breakers through relay outputs (8 channels of DO, capacity 5A/250V AC), meeting the startup needs of motors with different powers (10kW-1000kW).
Local and remote control: Equipped with 2 RS485 communication interfaces (supporting Modbus RTU/ASCII and IEC 60870-5-103 protocols), it can be connected to DCS and SCADA systems to realize remote startup/shutdown and parameter configuration. It also has a built-in LCD display panel (128×64 pixels, with backlight support) and 4 operation buttons, supporting local manual control and parameter setting, and adapting to both unattended and on-site operation scenarios.
Logic programming function: Built-in configurable logic controller (CLC), supporting graphical programming (no code required) to customize control logic (e.g., motor startup/shutdown interlock, linkage control with other equipment). It can configure up to 32 logic blocks, adapting to motor control needs in complex industrial processes (e.g., standby switching of pump sets, sequential startup/shutdown of fans).

2. Strong Environmental Adaptability and Reliability Design

Industrial-grade hardware protection: Adopts a die-cast aluminum alloy housing, with an protection rating of IP54 (panel-mounted) / IP40 (cabinet-mounted), resisting dust and humid environments. The operating temperature range is -25℃~+70℃, and the storage temperature range is -40℃~+85℃, enabling stable operation in harsh scenarios such as chemical workshops, underground mines, and power plant turbine rooms. It has passed EN 61000-6-2 (industrial environment immunity) and EN 61000-6-3 (emission, Class B) electromagnetic compatibility tests, with no misoperation under strong electromagnetic interference such as high-voltage equipment startup/shutdown and inverter operation.
Redundancy and fault self-diagnosis: Supports dual-power redundant input (24V DC/110V AC/220V AC optional, automatic switching), ensuring reliable power supply for the device itself. It has hardware fault self-diagnosis functions (e.g., CPU, memory, and I/O module fault detection). When a fault occurs, it issues a clear alarm through LED indicators and messages, and automatically switches to "fail-safe mode" (e.g., maintaining output status or cutting off non-critical outputs) to avoid secondary risks.

IV. Key Technical Parameters

Category	Specific Specifications
Basic Information	Model: REM620A_F NAMBBABA33E5BNN1XF Product Type: Motor Protection and Control Relay Applicable Motors: Medium and high-voltage induction/synchronous motors (1kV-35kV), power 10kW-1000kW
Protection Functions	Overload, short circuit, locked rotor, phase loss/current unbalance, earth fault, under-voltage/over-voltage, long startup time, thermal memory, etc.
Monitoring Parameters	Three-phase current (0-6000A, CT required), three-phase voltage (0-400V/10kV/35kV, VT required), power factor, active/reactive power, winding temperature (-50℃~+200℃), bearing temperature
Accuracy Indicators	Current/Voltage: ±0.2% FS Temperature: ±0.5℃ (PT100/RTD) Power: ±0.5% FS
Input/Output Interfaces	Analog Input (AI): 4 channels (current/voltage/temperature) Digital Input (DI): 8 channels (dry contact/wet contact) Digital Output (DO): 8 channels (relay output, 5A/250V AC) Communication Interfaces: 2 RS485 (Modbus RTU/ASCII, IEC 60870-5-103)
Power Supply and Environment	Operating Voltage: 24V DC/110V AC/220V AC ±15% Power Consumption: ≤10W under normal operation, ≤15W under maximum load Operating Temperature: -25℃~+70℃ Storage Temperature: -40℃~+85℃ Protection Rating: IP54 (panel-mounted) / IP40 (cabinet-mounted)
Display and Operation	Display Panel: 128×64-pixel LCD (with backlight) Operation Buttons: 4 (start/stop, parameter setting) Indicators: Power (green), Operation (green), Alarm (yellow), Fault (red)
Certification Standards	Safety Certification: IEC 60947-4-1, UL 508, GB 14048.4 Electromagnetic Compatibility: EN 61000-6-2/3 Environmental Certification: RoHS 2.0, REACH

V. Application Scenarios1. Petrochemical Industry

Pump equipment protection: Used for the protection and control of crude oil transfer pumps and chemical raw material transfer pumps. It prevents pump jamming (e.g., medium crystallization, foreign object blockage) through locked rotor protection, and prevents winding insulation damage (in chemical corrosive environments) through earth fault protection. Meanwhile, combined with trend analysis, it warns of bearing wear, avoiding production interruption and safety risks caused by pump leakage.
Compressor control: Compatible with large reciprocating/centrifugal compressor motors, supporting star-delta startup control. It adapts to power grid fluctuations through under-voltage/over-voltage protection, optimizes compressor operation efficiency through power factor monitoring, and realizes remote startup/shutdown and fault interlock (e.g., automatic shutdown when the compressor is overpressurized) by linking with the DCS system.

2. Electric Power Industry

Auxiliary system protection: Used for induced draft fans, forced draft fans, and feed water pump motors in thermal power plants. It prevents boiler shutdown caused by motor faults through phase loss protection and overload protection; the thermal memory function avoids cumulative overheating caused by frequent motor startup/shutdown (e.g., during load adjustment); at the same time, it is connected to the power plant's SIS system to upload motor operation data, helping to optimize the energy efficiency of the entire plant's equipment.
Hydropower station equipment control: Used for auxiliary motors of hydro-generators (e.g., cooling water pumps, lubricating oil pumps). It withstands the humid and dusty environment of hydropower stations, ensures reliable power supply through redundant power input, and prevents motor insulation damage due to moisture through earth fault protection, ensuring the stable operation of hydro-generators.

3. Metallurgy and Mining Industry

Rolling mill motor protection: Used for the main drive motors of rolling mills in iron and steel plants. It quickly cuts off rolling fault currents through short-circuit protection (action time
Mine hoist control: Compatible with underground mine hoist motors, supporting soft starter linkage control. The long startup time protection prevents hoist cage jamming, and the under-voltage protection adapts to underground power grid fluctuations. Meanwhile, it is connected to the mine monitoring system through RS485 to realize remote monitoring and fault diagnosis of hoist motors, ensuring the safety of mine transportation.

Product Tags: REM620A_F NAMBBABA33E5BNN1XF , ABB , Motor protection and control relays