CHINT NXC-65 AC Contactor

NXC-65 from the Kunlun Series by CHINT Electric is a 3-pole AC contactor, rated at 65A in the NXC series. The full model is typically expressed as NXC-65 [Coil Voltage] [Frequency] (e.g., NXC-65 220V 50Hz). It is mainly used for frequent starting and control of AC motors, as well as remote making and breaking of circuits.

Core Electrical Parameters

Product Features

1. Compact structure: Kunlun series design, small size, low installation space requirement
2. High reliability: Made of high-quality materials with precision manufacturing, suitable for harsh industrial environments
3. Low power consumption: Low coil power loss, obvious energy-saving effect
4. Easy installation & maintenance: Standard 35mm DIN rail mounting, clear terminals for easy operation
5. Strong expandability: Optional auxiliary contacts, air delay modules and other accessories available
6. Good safety performance: Excellent arc extinguishing performance and high breaking capacity

Applications

AC motor control: Frequent start, stop and reversing control for three-phase asynchronous motors up to approx. 30kW

Industrial automation systems: Control of production lines, conveyors, fans, pumps, etc.

Electrical control systems: Combined with thermal overload relays to form magnetic starters for motor overload protection

Building electrical: Air conditioning systems, fire equipment, water pump control systems

New energy equipment: Auxiliary control circuits for charging piles, PV inverters, etc.

Partial List of CHINT NXC Series Models

Cross-Brand Comparison (Equivalent AC Contactors)

Below is a comparison between CHINT NXC-65 and equivalent contactors from major brands, all functionally compatible:

Brand Feature Comparison

Important Notes

1. Ensure the coil voltage matches the control system to avoid malfunction.
2. Use the contactor with protective devices such as thermal overload relays for motor overload protection.
3. For high-frequency operation, select models with longer electrical life or increase maintenance frequency.
4. Ensure firm wiring of main and control circuits to prevent failures caused by poor contact.

CHINT Contactor Full Series Coding System & Cross-Brand Reference

1. CHINT Contactor Series Overview & Naming Rules

1.1 Main Series Classification

1.2 CHINT Contactor Model Naming Rules

NXC Series Format

NXC □□□ [M] [Coil Voltage] [Frequency]

│     │    │      │        │

│     │    │      │        └─ Coil frequency (50Hz/60Hz, default 50Hz)

│     │    │      └─ Coil voltage (AC24V/110V/220V/380V or DC24V/110V/220V)

│     │    └─ M = reversing contactor; blank = non-reversing

│     └─ Rated operational current (A)

└─ Brand code + product type (CHINT + AC contactor)

Auxiliary Contact Marking

Base model: default 1NO + 1NC (11)

Extended format: NXC-□□□-[XX], where XX = contact combination (01=0NO1NC, 22=2NO2NC)

Special Function Codes

Z: DC-operated contactor

N: Reversing contactor (NS = horizontal, NC = vertical)

-12: Newer version with improved performance

2. Complete CHINT Contactor Model List

2.1 Full NXC Series (Kunlun)

2.2 Core Models of Other Series

3. Cross-Brand Reference for CHINT Contactors

3.1 General Contactor Cross Reference (AC-3, 380V)

3.2 Brand Technical Comparison

4. Selection & Replacement Guidelines

4.1 Key Selection Parameters

1. Rated current (Ie): Select according to load; for motors, Ie ≥ 1.2 × motor rated current.
2. Coil voltage: Must match control system (AC/DC not interchangeable).
3. Operating frequency: For >1200 operations/hour, use long-life models.
4. Auxiliary contacts: Choose based on control logic (default 1NO+1NC).
5. Mounting: Standard 35mm DIN rail; high-current models may use bolt mounting.

4.2 Cross-Brand Replacement Notes

1. Mechanical compatibility

NXC mostly compatible with Schneider LC1-D mounting, but hole positions differ slightly.

Models above 100A vary greatly; brackets may need modification.

2. Electrical compatibility

Coil voltage and frequency must match exactly.

Auxiliary contact ratings differ (CHINT ~5A, some Schneider ~10A).

Short-circuit coordination with fuses/circuit breakers should be rechecked.

3. Performance differences

NXC: mechanical life 1.2 million, electrical life 100,000 (AC-3).

Premium Schneider/Siemens models reach 200,000 electrical cycles for ultra-frequent use.

4.3 NXC vs CJX2 Replacement

5. Quick Motor Selection Table

CHINT contactors cover a full range from 6A to 630A. The NXC (Kunlun) series offers greatly improved performance, reliability and compatibility, and can directly replace the CJX2 series and equivalent products from other brands. For cross-brand replacement, verify rated current, coil voltage, mounting dimensions and auxiliary contact configuration to ensure stable system operation.