CHINT CJX2-3210 AC コンタクタ

CJX2-3210 is a 3-pole 32A ACコンタクタ from CHINT CJX2 series, と 3 NO main poles + 1 補助接点なし.

It is suitable for controlling 15kW motors at AC-3 380V. Coil voltages include 220V/380V and others.

Direct replacement models include Schneider LC1N3210, Siemens 3RT6035-1AN20, 等.

機種説明 & 基本的な位置付け

モデルパーツ	意味
CJX2	CHINT AC contactor series (equivalent to Schneider LC1‑D series)
32	Rated operational current 32A (AC‑3 utilization category at 400V)
10	補助接点: 1 いいえ + 0 ノースカロライナ州

製品のポジショニング:

Industrial‑grade general‑purpose AC contactor, suitable for frequent starting and control of AC motors.

Can form a magnetic starter with thermal overload relays for motor protection.

主要な技術的パラメータ

アイテム	仕様
定格動作電圧	Up to 690V AC (50/60Hz)
定格動作電流	32あ (AC‑3 400V), thermal current Ith = 50A
Controlled power	15kW (AC‑3 380V), 21あ (AC‑3 660V)
補助接点	1 いいえ, rated 5A/220V AC
コイル電圧	オプション: 220V/380V/110V/36V/24V AC
Insulation characteristics	UI = 660V, compliant with GB14048.4 / IEC60947‑4‑1
機械式 / 電気的寿命	10 百万回 / 1 百万回 (AC-3)
寸法 (長さ×幅×高さ)	83×58×101 mm
取り付け	標準35mm DINレール

構造上の特徴 & 材料
Silver alloy contacts: Excellent conductivity and arc resistance, ensuring reliable switching.
32‑sheet silicon steel core: Reduces hysteresis loss, smoother pull‑in, stable operation.
Flame‑retardant housing: Meets V0 flame rating, improves safety.
Clear side marking: モデル, 電圧, CCC認証, 等.
アプリケーション
産業オートメーション: モーター制御, ファン, パンプス, コンプレッサー.
建物の電気: 空調設備, 消防ポンプ, exhaust fans.
Agricultural machinery: 灌漑, feed processing equipment.
Power systems: Remote circuit control in distribution panels.
Typical matching: Long‑running oil station motors, unidirectional equipment (no NC auxiliary required).
Comparison Within CJX2 Series

モデル	定格電流	Aux. 連絡先	AC‑3 380V Power	寸法 (mm)
CJX2‑0910	9あ	1 いいえ	4kW	73×47×82
CJX2‑1810	18あ	1 いいえ	7.5kW	73×47×82
CJX2‑2510	25あ	1 いいえ	11kW	83×58×96
CJX2‑3210	32あ	1 いいえ	15kW	83×58×101
CJX2‑4011	40あ	1 いいえ + 1 ノースカロライナ州	18.5kW	128×79×116
CJX2‑6511	65あ	1 いいえ + 1 ノースカロライナ州	30kW	128×79×116

Cross‑Brand Replacements

ブランド	代替機種	互換性
シュナイダー	LC1N3210M7N / LC1R3210M5N	Same dimensions & parameters
シーメンス	3RT6035‑1AN20 (domestic type)	機能的に同等, mounting compatible
ABB	A145‑30‑11 (32A class)	Aux. can be configured as 1 いいえ
美味しい	CJX2‑3210	Fully interchangeable
常熟スイッチ	CK3‑3210	Same performance & parameters

選択 & アプリケーションノート
コイル電圧: Selected per control circuit (commonly 220V / 380V).
Load matching: 32A ≈ 15kW at AC‑3 380V; avoid overload.
Aux. contact expansion: F4‑11 or similar modules can be added.
Protection coordination: Used with NR2 series thermal relays (例えば. NR2‑36) for overload protection.
環境: Operating temperature ‑5°C ~ +40°C; avoid dust & corrosive gas.

パッキング: 4 個/箱, 32 個/カートン

Comparison of CHINT Contactor Series

Overview:

CHINT contactors are divided into:

Classic (CJX2/CJ20/CJX8), アップグレード済み (NXC/NC5), High‑Power (NC8), DC Special (CJZ8/NCZ5).

NXC fully replaces CJX2 with better performance; NC5 focuses on intelligence & modularity; NC8 covers ultra‑high current; CJZ8 is for DC control.

優先度: NXC / NC5; use special series for special applications.

Series Positioning & 交換

シリーズ	位置決め	Replaced By / Replaces	主な特長
CJX2	Classic general	Fully replaced by NXC	費用対効果の高い, simple structure, flexible aux. 連絡先
NXC	New generation	Replaces CJX2, upgraded	High efficiency, 長寿命, standard 1NO+1NC, strong modularity
NC5	Smart & プレミアム	ハイエンド市場	Wide temp ‑25°C~+55°C, コミュニケーション, complex automation
NC8	High‑power heavy‑duty	Independent, up to 1000A	Up to 1000A AC‑3 415V, for large motors & heavy industry
CJX8	Traditional heavy‑duty	Partially replaced by NC8	Direct‑operated double break, suitable for legacy retrofits
CJ20	Traditional general	Replaced by NXC/NC5	Mature structure, low cost, civil & light industry
NXC‑XMG	Special load	Independent	For fans & パンプス, high energy saving
CJZ8/NCZ5	DC dedicated	Independent	Enhanced arc extinguishing, new energy & energy storage

主要な技術的パラメータ

2.1 Basic Electrical Data

シリーズ	Current Range	定格電圧	AC‑3 380V Power	Standard Aux. 連絡先
CJX2	9A~95A	Up to 690V	0.75kW~45kW	Below 32A: 1いいえ/1NC; ≥40A:1NO+1NC
NXC	6A~630A	Up to 690V	0.37kW~315kW	Full range: 1NO+1NC
NC5	6A~630A	Up to 690V	0.37kW~315kW	1NO+1NC, expandable to 6NO+6NC
NC8	6A~1000A	Up to 690V	0.37kW～500kW	2NO+2NC, expandable to 6NO+6NC
CJX8	9A~250A	最大660V	4kW~110kW	3NO+1NO/1NC or 4NO
CJ20	10A~630A	最大660V	5.5kW~315kW	1NO+1NC

2.2 Life & 環境

シリーズ	機械的寿命	電気的寿命 (AC-3)	Operating Temp	取り付け
CJX2	10 百万	1 百万	‑5°C~+40°C	35mm DIN / スクリュー
NXC	12 百万	1.2 百万	‑25°C~+55°C	35mm DIN / スクリュー
NC5	15 百万	1.5 百万	‑25°C~+55°C	35mm DIN / スクリュー
NC8	10 百万	0.8 百万 (high current)	‑25°C~+55°C	Mainly screw
CJ20	8 百万	0.8 百万	‑5°C~+40°C	スクリュー

構造 & 機能の違い

3.1 CJX2 (Classic)

構造: Direct‑operated single break, modular; F4 aux., F5 timer, NCF1 side aux. 利用可能.

連絡先: 銀合金, 3P main, flexible aux. (10/01/11).

コイル: AC/DC, 24V～380V.

3.2 NXC (アップグレード済み)

Optimized magnetic system, coil power ≈ 30% lower than CJX2.

Improved silver alloy contacts, better arc extinguishing.

Standard 1NO+1NC; supports aux., timer, mechanical interlock.

3.3 NC5 (Smart Premium)

Optional communication module (Modbus, 等) for IIoT.

Wide temperature, suitable for outdoor & harsh environments.

Enhanced insulation & short‑circuit withstand.

3.4 NC8 (High‑Power)

Enhanced arc chamber for high‑current breaking up to 1000A.

Optimized heat dissipation for heavy‑duty continuous operation.

Heavy‑duty mechanical structure, 高い耐振動性.

3.5 CJX8 (Traditional Heavy‑Duty)

Direct‑operated double break; front‑connected or rear‑connected versions.

まで 4 極 (3 main + 1 aux or 4 main) for special applications.

3.6 DC Contactors

CJZ8: Low‑voltage DC (12V～220V), up to 40A, small DC loads.

NCZ5: High‑voltage DC (up to 1500V), up to 500A, new energy vehicles & energy storage.

Dedicated DC arc extinguishing structure.

アプリケーションシナリオ

シリーズ	Best For	Typical Load	Not Recommended
CJX2	Legacy retrofit, 予算プロジェクト	Small motors ≤15kW, 点灯, 加熱	High‑end automation, harsh environments
NXC	産業オートメーション, new projects	Medium motors ≤315kW, ファン, パンプス	Ultra‑large motors, special DC loads
NC5	Smart factories, complex systems, 屋外	中くらい & large motors, 生産ライン	Cost‑sensitive simple circuits
NC8	Large industry, 力, 冶金	Large motors ≤500kW, 変圧器	小さな負荷, civil buildings
CJX8	Legacy maintenance, special control	Traditional machinery, special circuits	New smart projects
CJ20	Civil, light industry, temporary power	ACユニット, パンプス, small machines	頻繁な切り替え, high‑end automation
DC series	New energy, energy storage, rail	DC motors, batteries, chargers	AC loads

セレクションガイド & 交換品

5.1 Selection Priority

新しいプロジェクト: NXC (replaces CJX2)
Smart/complex systems: NC5
Ultra‑high power >315kW: NC8
DC loads: CJZ8 / NCZ5
Legacy retrofit: CJX2/CJ20/CJX8 or upgrade to NXC/NC5

5.2 Cross‑Series Replacement

オリジナル	推奨代替品	アドバンテージ
CJX2‑09~95	NXC‑06~100	Standard 1NO+1NC, life +20%, power ‑30%
CJ20‑10~630	NXC‑12~630 / NC8‑12~1000	Better performance, modular, easier maintenance
CJX8‑09~250	NC8‑06~250	Better arc extinguishing, 幅広い温度

5.3 Model Selection Tips

現在: 32A ≈ 15kW; 63A ≈ 30kW; 100A ≈ 45kW at AC‑3 380V.

Aux. 連絡先: NXC has 1NO+1NC standard; CJX2 uses 10/01/11.

コイル: 220V/380V/110V/36V/24V AC/DC.

取り付け: 35mm DIN preferred; screw for high power.

Special Notes: CHINT CJX2‑3210

As a representative model of CJX2 series, CJX2‑3210 is a 3‑pole 32A AC contactor with 3 NO main contacts + 1 補助接点なし, suitable for 15kW motor control at AC‑3 380V.

Common replacements:

CHINT NXC‑3210 (upgraded)

Schneider LC1N3210M7N

Siemens 3RT6035‑1AN20

ABB A145‑30‑11 (32A class)