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The CJX2-F185 is a 3-pole AC contactor rated for 185A continuous current, engineered for motor starting and power distribution applications in industrial electrical systems. Manufactured by CHNAILE, this contactor features a busbar-mount design with silver-based contact material and an integrated arc extinguishing system. The unit measures 205 × 130 × 185 mm and supports direct busbar connection for reduced thermal resistance in high-current installations.
Parameter | Value |
|---|---|
Rated current (AC-3) | 185 A |
Number of poles | 3 |
Rated operational voltage | 690 V AC |
Rated insulation voltage | 1000 V |
Rated frequency | 50/60 Hz |
Mechanical endurance | 10 × 10^6 cycles |
Electrical endurance (AC-3) | 1.2 × 10^6 cycles |
Auxiliary contact configuration | 2 NO + 2 NC |
Auxiliary contact rated current | 10 A |
Parameter | Specification |
|---|---|
Protection degree (main circuit) | IP20 |
Protection degree (coil terminals) | IP00 |
Operating temperature range | -5°C to +40°C |
Storage temperature range | -25°C to +55°C |
Altitude limit | ≤ 2000 m |
Relative humidity | ≤ 50% at +40°C, ≤ 90% at +20°C |
Installation category | III |
Pollution degree | 3 |
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The CJX2-F185 employs exposed heavy-gauge copper mounting pads with silver plating on all input and output terminals. This design eliminates traditional wire-clamping terminals, enabling direct bolted connection of solid copper busbars. The large flush contact surface area minimizes electrical resistance at connection points, reducing temperature rise under sustained 185A loads. This configuration supports compliance with IEC 60947-4-1 temperature rise standards for switchgear assemblies.
Each pole incorporates a reinforced arc extinguishing chamber with multiple metal arc chutes. The chamber design directs arc energy through magnetic blowout coils, rapidly elongating and cooling the arc during contact separation. Silver-tin oxide (AgSnO2) contact material provides resistance to arc erosion and welding, maintaining consistent contact resistance across the rated electrical lifespan.
The CJX2-F185 comes pre-mounted with an F4-22 auxiliary contact block featuring 2 normally open and 2 normally closed signaling contacts. This auxiliary block mounts directly to the contactor body via a standardized mechanical interface, eliminating the need for aftermarket accessory installation during panel assembly.
Auxiliary Parameter | Value |
|---|---|
Contact configuration | 2 NO + 2 NC |
Rated thermal current | 10 A |
Rated operational voltage | 690 V AC / 220 V DC |
Mechanical endurance | 10 × 10^6 cycles |
Electrical endurance (AC-15) | 1 × 10^6 cycles |
The integrated auxiliary contacts provide dry-contact signaling compatible with standard PLC input modules and SCADA monitoring systems. This enables remote status monitoring of contactor position, support for safety interlock circuits, and integration with building management systems without additional signal conditioning.
The CJX2-F185 contactor serves as a switching component in low-voltage distribution panels, main distribution boards (MDBs), and substation control cabinets. It is specified for capacitor bank switching, feeder control, and bus tie applications in municipal power infrastructure projects.
For motor starting applications, the CJX2-F185 handles squirrel-cage motor loads up to 90 kW at 380V (AC-3 duty). Typical installations include water treatment pumps, compressor systems, conveyor belts, and industrial fan drives in manufacturing facilities.
In solar photovoltaic installations, the contactor performs DC-side disconnection and AC-side grid-tie switching functions. It is also used in battery energy storage systems for charge/discharge circuit control and inverter isolation.
The CJX2-F185 series is manufactured in accordance with IEC 60947-4-1 and GB 14048.4 standards. Production facilities operate under ISO 9001:2015 quality management systems. Each unit undergoes routine testing for dielectric strength, contact resistance, and coil operation before shipment. Type test reports are available upon request for project qualification.
CHNAILE operates automated production lines for contactor assembly, including robotic contact welding, coil winding, and final testing stations. Incoming material inspection covers silver contact composition verification, copper busbar conductivity testing, and plastic housing flammability rating (UL94 V-0). Finished goods sampling includes 100% electrical performance testing and mechanical operation verification.
The CJX2-F185 is available with multiple coil voltage options to suit regional electrical standards. Available coil voltages include 24V, 48V, 110V, 220V, and 380V at 50/60Hz. DC coil versions are also available for battery-powered and control circuit applications.
CHNAILE provides OEM manufacturing services including custom brand labeling, modified packaging, and tailored documentation. Minimum order quantities for private labeling start at 100 units. Standard lead time for production orders is 15-20 working days, with expedited options available for urgent project requirements.
Under AC-3 duty conditions at rated current and voltage, the CJX2-F185 has a rated electrical endurance of 1.2 × 10^6 operating cycles. Mechanical endurance is rated at 10 × 10^6 cycles. Actual service life varies based on load type, switching frequency, and operating conditions.
The CJX2-F185 is primarily designed for AC systems. For DC motor control applications, derating applies and the contactor should be specified at a lower current rating. Consult the technical datasheet or contact the engineering team for DC application guidance.
Standard AC coil voltages include 24V, 48V, 110V, 220V, and 380V at 50/60Hz. DC coil options (24V, 48V, 110V, 220V) are available on custom order. Coil voltage must be specified at the time of order placement.
Standard production lead time is 15-20 working days for quantities up to 500 units. For larger orders or custom configurations, lead time may extend to 25-30 working days. Stock units may be available for immediate shipment depending on current inventory levels.
For commercial procurement inquiries, technical specifications, or project-specific customization requests, submit your requirements through the official inquiry form. CHNAILE's technical sales team provides detailed quotations within 24-48 business hours, including pricing, lead times, and documentation support for switchgear manufacturers, panel builders, and system integrators worldwide.
