CJX2 Series 3P AC Magnetic Contactor

Product Overview

The CJX2 series is a classic general-purpose AC magnetic contactor family, the most widely used switching device in low-voltage 3-phase power systems. It is applied for remote starting, stopping and reversing of induction motors, as well as switching resistive, inductive and capacitive loads in distribution and automation circuits. It can be directly paired with thermal overload relays to form a compact direct-on-line (DOL) motor starter.

The series covers 10 standard frame sizes from 9A to 95A rated operational current under AC-3 utilization category. All models adopt thick silver alloy main contacts for anti-ablation performance, high-purity oxygen-free copper coils for low temperature rise, and optimized laminated silicon steel cores for stable magnetic pull and low acoustic noise. Auxiliary contacts are integrated for control circuit interlocking, self-holding and status feedback. With standard DIN-rail mounting and compact modular design, it is universally adopted by switchgear manufacturers, machinery OEMs and industrial system integrators worldwide. Fully compliant with IEC 60947-4-1 and GB/T 14048.4 standards.

Key Product Features

✅ Full Current Range from 9A to 95A 10 standard frame sizes: 9A, 12A, 18A, 25A, 32A, 40A, 50A, 65A, 80A, 95A. Covers light-duty control circuits up to medium-power motor and feeder applications, one unified platform for complete project selection.

✅ Silver Alloy Main Contacts High-grade silver alloy contact material, excellent arc resistance and anti-welding performance, low and stable contact resistance. Effectively extends electrical life under frequent switching cycles and reduces overheating risk.

✅ Pure Copper Coil + Silicon Steel Core High-purity oxygen-free copper coil with class B insulation, matched with laminated cold-rolled silicon steel iron core. Stable magnetic attraction, low holding power consumption, low operation noise, reliable closing even under ±15% grid voltage fluctuation.

✅ Standard Auxiliary Contact Configuration

• 9A–32A frames: 1 normally open (1NO) auxiliary contact
• 40A–95A frames: 1 normally open + 1 normally closed (1NO+1NC) auxiliary contacts Suitable for control interlocking, self-holding circuits, fault alarms and remote status indication.

✅ Multiple Coil Voltage Options Wide selection of coil voltages: AC 24V, 36V, 48V, 110V, 220V, 380V, 400V. Adapts to different regional grid standards and control system voltage requirements.

✅ DIN-Rail & Screw Dual Mounting Fits universal 35mm DIN rail for quick snap-on installation, also supports screw fixed mounting for heavy vibration scenarios. Standard mounting dimensions for direct drop-in replacement of same-series contactors.

✅ IEC 60947-4-1 International Standard Designed, manufactured and fully type tested in accordance with IEC 60947-4-1 and GB/T 14048.4 standards. Passed making/breaking capacity test, endurance test, dielectric test and temperature rise test, qualified for global industrial projects.

Technical Specifications

Frame Size & Current Rating

表格

Application Scenarios

• 3-phase induction motor direct-on-line (DOL) starting, stopping and reversing control
• Motor starter panels, pump control cabinets and fan control centers
• Industrial low-voltage distribution board feeder load switching
• Automation production line power and control circuit switching
• Commercial building and infrastructure electrical distribution systems
• Machine tool, packaging machinery and HVAC equipment control circuits
• Renewable energy inverter and storage system power switching

Our Advantages

1. Full-range specification stock All 10 frame sizes with common coil voltages in sufficient stock. Support mixed batch orders for panel builders and project contractors, with fast bulk shipment available.
2. Industrial-grade material standard Genuine silver alloy contacts and pure copper coils as standard. Avoids contact overheating, welding and coil burnout issues under long-term frequent operation.
3. Strict multi-item factory testing Each unit undergoes pull-in/release voltage test, contact resistance test, insulation withstand voltage test and mechanical operation test before delivery.
4. Strong interchangeability Industry-standard mounting dimensions, terminal spacing and outline. Can directly replace mainstream CJX2 / LC1 series contactors on the market without cabinet modification.
5. Complete technical support Provide dimension drawings, wiring diagrams, selection guides and product datasheets to support project design, tender bidding and on-site commissioning.

Custom Solution

We provide project-oriented custom solutions for CJX2 AC contactors:

• OEM Brand Customization: Private brand logo and custom model marking on front label and side nameplate for distributor branded resale.
• Coil Voltage Customization: Special coil voltage and frequency according to target market grid standard and control system requirements.
• Auxiliary Contact Upgrade: Additional auxiliary contact blocks, air delay heads and mechanical interlock accessories for special control functions.
• Export-grade Custom Packing: Neutral carton, customer-branded carton, seaworthy reinforced packing for long-distance sea transportation.
• Large-batch Priority Production: Priority production schedule for large machinery OEM and EPC project orders.

Share your required current rating, coil voltage and auxiliary contact configuration, our engineers will confirm the exact CJX2 model for you within 24 working hours.

FAQ

Q1: What is the CJX2 series contactor mainly used for?

A: It is mainly used for remote control of 3-phase motor starting, stopping and reversing, and also for switching resistive, inductive and capacitive loads in low-voltage power distribution and control systems.

Q2: What do the digits in the model number mean?

A: The first two digits indicate rated operational current in amperes under AC-3 category. The last two digits indicate auxiliary contacts: “10” = 1 NO + 0 NC; “11” = 1 NO + 1 NC.

Q3: What coil voltages are available?

A: Standard options include AC 24V, 48V, 110V, 220V and 380V. Special voltages such as 400V and 440V can be customized for bulk orders.

Q4: Can it be paired with a thermal overload relay?

A: Yes. CJX2 contactors are designed for direct plug-in mounting with matching thermal overload relays to form a compact DOL motor starter with overload and phase failure protection.

Q5: Is this contactor DIN-rail mountable?

A: Yes, it fits standard 35mm DIN rail for quick snap-on installation. It also supports screw fixed mounting for applications with heavy vibration.

Q6: Do you support OEM private-label service?

A: Yes, logo and label customization is available. A certain minimum order quantity applies for OEM service.

Q7: What standard does the CJX2 series comply with?

A: It is designed and tested in full compliance with IEC 60947-4-1 international standard for low-voltage contactors, and also meets GB/T 14048.4 national standard.

Package Content

1 × CJX2 Series AC Magnetic Contactor