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  • Welcome to the naidian industrial Thermostats: motor Protection resource. motor Protection. A motor controller is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.
motor protection relay-Digital Intelligent motor Protector

name:NDD4(JD-501S) Digital Intelligent motor Protector

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motor protection relay-Digital Intelligent motor Protectormotor protection relay-Digital Intelligent motor Protectormotor protection relay-Digital Intelligent motor Protector

Specification

Type NDD4A-S(JD-501S) NDD4A-(DBJ) NDD4B-S(JD-601S) NDD4B(JD-601JDB-90)
name Digital intelligent motor protector
Operation Power AC 220V 380V 50HZ(Other voltage can make)
Rating Current 1~50A 20~100A,80~200A 50~200A
Protect Function 1.Phase-failure protect
2.Over current protect 3.Three-phase unbalance protect
1.Phase-failure protect
2.Over current protect
3.Three-phase imbalance protect
4.Block protect
5.Leakage protect
Display Type Digital indication Light indication Digital indication Light indication
Display Accuracy 2.0 class 2.0 class
Phase-failure protect time ≤2s ≤2s
Overload protect time 1.2Ie overload current protect act time:120s±10%
Three phase current imbalance protector time When current differences of 1-phase and other 2-phase reach up 40%~60%,the protect act time ≤2s
Leakage protect time ------ ≤0.1s
Jump-start relay time ------ 5~60s
Reset Pushbutton and power cut reset Power cut reset
Contact capacity AC380V 3A  (Resistance) AC380V 5A  (Resistance)
Outline dimension(mm) 70×127 ×120 64×162×154
Electrical life
Mechanical life
Mounting type Surface mounting
Cross reference JD-501S DBJ JD-601S JD-601 JDB-90

 

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