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 [コイル電圧] [頻度] (例えば, 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.

コアの電気パラメータ

製品の特徴

1. Compact structure: Kunlun series design, small size, low installation space requirement
2. High reliability: Made of high-quality materials with precision manufacturing, 過酷な産業環境に適しています
3. 低消費電力: Low coil power loss, obvious energy-saving effect
4. Easy installation & メンテナンス: 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

アプリケーション

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, ファン, パンプス, 等.

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, 等.

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

重要な注意事項

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] [コイル電圧] [頻度]

│ │ │ │ │

│ │ │ │ └─ 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 (あ)

└─ Brand code + product type (チント + ACコンタクタ)

Auxiliary Contact Marking

ベースモデル: default 1NO + 1ノースカロライナ州 (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. 選択 & Replacement Guidelines

4.1 主要な選択パラメータ

1. 定格電流 (つまり): Select according to load; for motors, Ie ≥ 1.2 × モーター定格電流.
2. コイル電圧: Must match control system (AC/DC not interchangeable).
3. 動作周波数: For >1200 稼働時間/時間, use long-life models.
4. 補助接点: Choose based on control logic (default 1NO+1NC).
5. 取り付け: 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. ブランド間の交換用, verify rated current, コイル電圧, mounting dimensions and auxiliary contact configuration to ensure stable system operation.