CJX2 series AC contactors are suitable for circuits with AC 50Hz/60Hz, rated operating voltage up to 690V, and rated current up to 95A under AC-3 usage category. They are used for making and breaking circuits over long distances, and frequently starting and controlling AC motors. It can be combined with a thermal overload relay to form an electromagnetic starter to achieve motor overload protection.

Core application scenarios: water pump/fan control, machine tool electrical system, compressor/air compressor, lighting/heating equipment control, automated production line

Standard certification: GB 14048.4-2020, IEC 60947-4-1, CCC compulsory certification

Core technical parameters

Main circuit parameters Rated operating current: 9A~95A
Rated working voltage: 690V
Rated insulation voltage: 1000V
Rated impulse withstand voltage: 8kV
Control circuit parameters Coil voltage: AC 24V/36V/110V/220V/380V
Coil power consumption: pull-in power ≤180VA, holding power ≤30VA
Life parameters Mechanical life: ≥10 million times
Electrical life: ≥1 million times (under AC-3 rated current)
Environmental conditions Working temperature: -25℃~+40℃
Protection level: IP20
Pollution level: Level 3

Structural composition (3 sets of main contacts + core system)

1. Contact system
3 sets of main contacts (normally open): making and breaking the main circuit with large current (9A~95A)
Auxiliary contacts: 1NO+1NC/2NO+2NC optional, used for control loop interlocking

2. Electromagnetic system
Coil: AC/DC optional, energized to generate magnetic force
Static iron core + moving iron core (armature): electromagnetic attraction drives the contact action
Short-circuit ring: eliminates AC vibration and noise
Reset spring: resets the contacts after the coil is powered off

3. Arc extinguishing system
Grid arc extinguishing cover: quickly extinguish the arc generated during breaking and protect the contacts

4. Mechanical structure
Transmission mechanism: connecting iron core and contacts
Brackets and bases: support components and provide insulation

5. Accessory interface
Auxiliary contact module, delay head, mechanical interlocking device installation position

Performance features and advantages

Efficient arc extinguishing: grid-type arc extinguishing structure, strong breaking capacity and long service life
Low power consumption design: The coil has low power consumption and significant energy saving effect
Flexible installation: standard 35mm guide rail installation + screw fixation, adaptable to a variety of cabinets
Safe and reliable: insulation grade F, protection grade IP20, in line with international standards
Strong compatibility: can be used in combination with a variety of thermal relays and auxiliary contacts

Selection guide

Determine the load type (AC-3 motor load/AC-1 resistive load)
Calculate the load current (motor rated current × 1.2~1.5 times)
Select a contactor corresponding to the rated current
Match coil voltage (consistent with control loop)
Select the number of auxiliary contacts (NO/NC)
Recommended accessories: auxiliary contact module (CJX2-F02/11/20), JR36 series thermal overload relay, mechanical interlocking device