CJ40 AC Contactor

CJ40 AC Contactor

The CJ40 Series AC Contactor by CNC Electric is a heavy-duty low-voltage switching device designed for the control of high-power AC motors and industrial loads. Built for demanding applications, it provides reliable switching performance under AC-3 duty conditions and complies with IEC 60947-4-1 standards.

It is widely used in industrial motor control centers (MCC), power distribution panels, compressors, pumps, and large machinery systems.

Technical Specifications

General Data

Parameter Specification
Brand CNC Electric
Series CJ40
Product Type AC Contactor
Standard IEC 60947-4-1
Utilization Category AC-3
Poles 3P
Installation Panel Mount

Electrical Ratings

Parameter Specification
Rated Operational Voltage (Ue) Up to 690 V AC
Rated Insulation Voltage (Ui) 1000 V
Rated Frequency 50 / 60 Hz
Rated Impulse Withstand Voltage (Uimp) 8 kV
Control Voltage (AC Coil) 24 V / 36 V / 110 V / 127 V / 220 V / 380 V

AC-3 Rated Current Table

Model Rated Current (AC-3) Motor Power @ 400 V
CJ40-40 40 A 18.5 kW
CJ40-63 63 A 30 kW
CJ40-80 80 A 37 kW
CJ40-100 100 A 45 kW
CJ40-125 125 A 55 kW
CJ40-160 160 A 75 kW
CJ40-200 200 A 90 kW
CJ40-250 250 A 110 kW
CJ40-315 315 A 132 kW
CJ40-400 400 A 160 kW

Coil Characteristics

Parameter Specification
Coil Type AC Electromagnetic
Coil Frequency 50 / 60 Hz
Operating Voltage Range 85 % – 110 % of rated control voltage
Drop-out Voltage 20 % – 70 % of rated voltage

Auxiliary Contacts

Type Configuration
Built-in Auxiliary 2NO + 2NC
Additional Blocks Expandable
Mechanical Interlock Available (reversing applications)

Mechanical & Environmental

Parameter Specification
Mechanical Life 10,000,000 operations
Electrical Life (AC-3) 100,000 operations
Operating Temperature −5 °C to +40 °C
Mounting Orientation Vertical recommended
Protection Degree IP20

Applications

  • Industrial motor control centers
  • High-capacity pump and compressor systems
  • Large conveyor drives
  • Industrial HVAC systems
  • Power distribution switching
  • Generator control panels
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