CJX2-F Heavy Duty Series

The CJX2-F Heavy Duty Series is a family of low-voltage AC contactors engineered for heavy industrial switching applications. Designed to handle high inrush loads and frequent switching cycles, these contactors provide robust performance in motor control centers, large HVAC systems, industrial machinery, and power distribution panels. The series complies with IEC 60947-4-1 / GB 14048-4 standards and is suitable for AC control circuits in power systems up to 690 V AC.

Technical Specifications (Series Overview)

Model Identification

Specification	Details
Series	CJX2-F Heavy Duty
Product Type	AC Contactor
Standards Compliance	IEC 60947-4-1 / GB 14048-4
Mounting	Panel / DIN rail adapter (optional)
Control Circuit	AC coil (various voltages)

Electrical Ratings

Parameter	Specification
Rated Insulation Voltage (Ui)	1000 V AC
Rated Impulse Withstand Voltage (Uimp)	6 kV
Rated Operational Voltage (Ue)	Up to 690 V AC
Rated Frequency	50 / 60 Hz
Poles	1P, 2P, 3P, 4P (model dependent)
Utilization Categories	AC-3 / AC-4 (heavy duty)
Connection Type	Screw or bolt clamp terminals

Main Circuit Load Ratings

Model	Poles	AC-3 Rated Current	AC-4 Rated Current	Typical Use
CJX2-F09	3P	9 A	6 A	Small motors / lighting
CJX2-F12	3P	12 A	8 A	Small motors / resistive loads
CJX2-F18	3P	18 A	12 A	Medium motors
CJX2-F25	3P	25 A	17 A	Medium+ motors
CJX2-F32	3P	32 A	20 A	Larger motors
CJX2-F40	3P	40 A	25 A	Heavy motors
CJX2-F50	3P	50 A	32 A	Heavy duty applications

Control Coil (AC Voltage) Options

Coil Voltage	Type	Frequency
AC 24 V	Standard	50/60 Hz
AC 36 V	Standard	50/60 Hz
AC 110 V	Standard	50/60 Hz
AC 220 V	Standard	50/60 Hz
AC 380 V	Standard	50/60 Hz
AC 415 V	Standard	50/60 Hz
AC 690 V	Optional (model dependent)	50/60 Hz

Auxiliary Contacts & Add-Ons

Accessory	Function
Auxiliary Contact Block (1NO/1NC)	Additional signalling
Mechanical Interlock Kit	Supports interlocking contactors
Surge Suppressor / RC Snubber	Reduces coil switching spikes
DIN Rail Adapter	Enables DIN rail mounting
Thermal Overload Relay	Paired for motor protection

Mechanical & Environmental

Parameter	Specification
Mechanical Endurance	≥ 10⁷ operations
Electrical Life (AC-3)	≥ 10⁵ operations
Operating Temp. Range	−5 °C … +40 °C
Humidity Tolerance	≤ 90 % (non-condensing)
Mounting	Panel-mounted with optional rail adapter
Terminals	Front screw or bolt clamps

Typical Pole / Load Table

Model Code	Poles	AC-3 Current	AC-4 Current	Application
CJX2-F09	3P	9 A	6 A	Small motor / loads
CJX2-F12	3P	12 A	8 A	Small motor control
CJX2-F18	3P	18 A	12 A	Medium motor control
CJX2-F25	3P	25 A	17 A	Industrial motors
CJX2-F32	3P	32 A	20 A	Higher power motors
CJX2-F40	3P	40 A	25 A	Heavy motors
CJX2-F50	3P	50 A	32 A	Heavy industrial loads