The motor is an important asset of the enterprise. It is necessary to monitor the running status and the efficiency of the motor, and protect the motor. ARD series smart motor protector is used for 660V low-voltage motor circuits with protection, measurement, control, communication, operation and maintance function, can realize multiple starting schemes to ensure the safe operation of the motor. It can be connected to the intelligent MCC or DCS production system. It is widely used in Chemical Industry、Power Plant、Pump Station、Mining Industry、Metallurgical Industry and so on.
Main Functions
1)Protection function

Start timeout

External Fault



Insulation Fault

tE time



Loss of pressure (anti-shake)

Short circuit


4-20mA input protection


Phase Failure


Stall Phase






Modbsu-RTU; Modbus-TCP; Profibus-DP; Profinet
Acrel 2000M Interface
Motor Control Center
Network Topology
Process Flow Diagram
Product Selection
ARD2 Smart Motor Protector

● Suitable for motors with rated voltage of AC380V/660V;

● Optional leakage protection, RS485 communication, analog output, etc.

● 2 channels DI passive dry node input, signal power supply with built-in DC24V power supply;

● 4 channels DO output

ARD2F Smart Motor Protector

● U, I, P, S, PF, F, EP, Leakage, PTC/NTC

● 16 protect function

● Start control function

● 9 programmable DI

● 5 programmable DO

● Modbus-RTU or Profibus-DP communication

● 1 DC4-20mA analog output

● 20 fault record

● Anti-shaking function

ARD3M Smart Motor Protector

●Suitable for low-voltage motor circuit with rated voltage up to 660V, it integrates protection, measurement, control, communication, operation and maintenance.

●The product adopts split structure, composed of main body, display unit, transformer and optional communication module, compact size, compact structure, simple wiring, can be used for various cabinet installation.

AKH-0.66/P Current Sensor

● It is used for collecting low voltage overload and short circuit signal, and it is used together with protection relay and motor protector.

•Current transformer for Protection

•10P5 10P10 10P15