CHNT AC contactor CJX2-4011 5011 6511 8011 9511 40A50A65A80A95A
CHNT AC contactor CJX2-4011 5011 6511 8011 9511 40A50A65A80A95A
The CHNT CJX2 series AC contactors are 3-pole (3P) normally open (NO) main contact devices designed for AC-3 utilization category (starting of squirrel cage motors and switching off during running). Key electrical ratings at 380V/400V AC-3 include:
| Model | Rated Current (AC-3 @ 380V) | Motor Power (kW @ 380V) | Auxiliary Contacts |
|---|---|---|---|
| CJX2-4011 | 40A | 18.5kW | 1NO + 1NC |
| CJX2-5011 | 50A | 22kW | 1NO + 1NC |
| CJX2-6511 | 65A | 30kW | 1NO + 1NC |
| CJX2-8011 | 80A | 37kW | 1NO + 1NC |
| CJX2-9511 | 95A | 45kW | 1NO + 1NC |
AC-1 resistive load ratings are typically 60A, 75A, 100A, 125A, and 150A respectively. Coil voltage options include AC 24V, 36V, 110V, 220V, 380V (standard) and DC 12V, 24V, 110V, 220V (select models). Mechanical life exceeds 10 million operations, with electrical life exceeding 0.8 million operations under AC-3 duty. Operating temperature range: -5℃ to +40℃ (no freezing). Protection rating: IP20 for enclosure (finger-safe terminals).
The CHNT CJX2 series (4011, 5011, 6511, 8011, 9511) is the successor/replacement for LC1-D series (TeSys D form-factor compatible), offering direct drop-in interchangeability with Schneider, Siemens, and ABB contactors. These devices are engineered for motor control centers, HVAC compressors, industrial pumps, conveyor systems, and lighting control panels. The 4011 (40A/18.5kW) is ideal for small machine tools and fans; the 5011 (50A/22kW) serves medium-duty compressors and elevators; the 6511 (65A/30kW) fits commercial HVAC chillers; the 8011 (80A/37kW) powers large industrial pumps and crushers; and the 9511 (95A/45kW) handles heavy-duty extruders and mining equipment. All models feature built-in 1NO+1NC auxiliary contacts (eliminating external add-on blocks), bimetal thermal overload relay compatibility (mountable via CJR2 series), and finger-safe IP20 terminals for electrical safety compliance (IEC 60947-4-1). As authentic CHNT Original components, they deliver cost-effective reliability with CCC, CE, and CB certifications, making them the preferred choice for OEM machinery builders, panel shops, and motor control retrofits in Asia-Pacific and emerging markets.
Key Specifications
| Model | Rated Current | Compatible Motor Power | Auxiliary Contacts |
|---|---|---|---|
| CJX2-4011 | 40A | 18.5kW | 1NO+1NC |
| CJX2-5011 | 50A | 22kW | 1NO+1NC |
| CJX2-6511 | 65A | 30kW | 1NO+1NC |
| CJX2-8011 | 80A | 37kW | 1NO+1NC |
| CJX2-9511 | 95A | 45kW | 1NO+1NC |
Application Scenarios:
Industrial Control Cabinets, Motor Control Centers
Starting and Stopping of AC Motors (e.g., Water Pumps, Fans, Compressors)
Remote Control of Machine Tools and Automation Equipment
Compatible with JRS1/NR2 Thermal Relays for Overload Protection
FAQ:
What do the numbers in the CJX2-4011 or CJX2-9511 models stand for?
The first two digits represent the rated operational current (e.g., “40” means 40A, “95” means 95A). The last two digits indicate the contact configuration: “11” stands for 3 normally open (NO) main contacts, 1 normally open (NO) auxiliary contact, and 1 normally closed (NC) auxiliary contact.
I need a contactor for a 15kW motor. Which model should I choose?
For a standard 3-phase 380V motor, a 15kW motor draws roughly 30A. Therefore, the CJX2-4011 (40A) is the most suitable choice and provides a good safety margin. The CJX2-5011 or 6511 would also work but are oversized for 15kW.
