シュナイダーエレクトリック NSX250N‑3P‑160A

This is a Schneider Electric ComPacT NSX series ノーヒューズサーキットブレーカー (MCCB) for power distribution protection.

New standard order number: C25N3TM160

Obsolete old order number: LV431832

Compliant with IEC 60947‑2 and GB/T 14048.2 標準.

Basic Rated Core Parameters

アイテム	価値
タイプ	Low‑voltage MCCB for power distribution protection
Frame rating	250あ
極	3P (3 極, all protected)
定格電流入力	160あ (continuous at 40℃)
定格使用電圧Ue	690AC50/60Hz, suitable for 380V/400V/415V systems
定格絶縁電圧Ui	800Vと
Rated impulse withstand voltage Uimp	8kV
頻度	50/60Hz
Utilization category	タイプA (no short‑time delay, 一般配布)
アイソレーション機能	Certified isolating function per IEC 60947‑2

Short‑Circuit Breaking Capacity

システム電圧	Rated ultimate shortircuit breaking capacity Icu	Rated service shortircuit breaking capacity Ics
415Vと	50の	50の (100% ICU, reusable after breaking)
500Vと	36の	36の
690Vと	10の	10の

Rated short‑time withstand current Icw (1s): 12kA at 415V AC

TMD Thermal‑Magnetic Release Characteristics

Standard TMD thermal‑magnetic release, LI protection (long‑time overload + instantaneous short‑circuit).

Long‑time overload thermal protection

Ir setting range: 0.7–1×In (112A–160A)

特性: 120–400s at 1.5×Ir; ≤15s at 6×Ir (standard inverse time)

Short‑circuit instantaneous magnetic protection

Instantaneous current Ii: fixed at 1250A

稼働時間: ≤20ms

機械式 & Installation Parameters

アイテム	価値
寸法 (幅×高さ×奥行き)	105mm × 161mm × 86mm
Standard mounting centers	Vertical 125mm × Horizontal 35mm
取り付け	修理済み, front connected; horizontal/vertical, no derating
配線容量	Up to 70mm² copper cable / バスバー
機械的耐久性	20,000 オペレーション
電気的耐久性	10,000 operations at 440V AC, で
侵入保護	IP40 (体), IP54 (panel‑mounted)
Impact resistance	IK07
Net weight	約. 2.4kg

環境 & Compliance Parameters

周囲温度: -25℃～+70℃; no derating below 40℃

高度: 0–2000m without derating

汚染度: 3

過電圧カテゴリ: Ⅱ

認証: CCC, CE, EAC, 海洋, 等.

Accessory slots: 5 standard slots for auxiliary, アラーム, シャント, 不足電圧解除, 等.

拡大 & 互換性

Can be fitted with Vigi earth‑leakage modules

Compatible with motor operators for remote control

Can add interlock, position indicator, padlock devices

Top/bottom feed both allowed without performance derating

交換 & 選定メモ

Old type LV431832 is discontinued; use C25N3TM160 instead.
For electronic release (adjustable short delay / 地絡), upgrade to NSX250N with MicroLogic (2.2/5.0).
Breaking ratings: H (70の), S (100の), based on short‑circuit calculation.
競合他社: ABB Tmax T2, Siemens 3VT250, suitable for cross‑brand replacement.

NSX250N‑3P‑160A Direct Replacement Solutions

Core Matching Rules (100% match required)

Frame rating: 250あ (do NOT downgrade to 160A frame)

極: 3P

定格電流: 160あ

遮断容量: ≥50kA at 415V AC

リリースタイプ: 熱磁気 (LI characteristic)

取り付け: fixed front connection, matching panel holes

Recommended Replacements

シナリオ 1: Import Brand Direct Replacement

ABB Tmax XT3N250 TMD160/1600 FF 3P

注文番号: 1SDA068266R1

Match: 100%

Frame 250A, 3P, 160あ, TMG thermal‑magnetic

Icu=50kA, Ics=50kA at 415V AC

Identical dimensions and mounting holes

Full accessory compatibility

応用: foreign‑funded plants, export equipment, on‑site repair

Siemens 3VC250N TMA160 3P

注文番号: 3VC2316‑2DA33‑0AA0

Match: 98%

Frame 250A, 3P, 160あ, TMA thermal‑magnetic

50kA at 415V AC

Highly compatible dimensions

応用: Siemens low‑voltage systems

シナリオ 2: Domestic High‑Cost‑Performance Replacement

Changshu Switch CM3‑250H/3300 160A

Match: 99%

Frame 250A, 3P, 160あ, distribution type thermal‑magnetic

Icu=50kA at 415V AC

Compliant with IEC 60947‑2 / GB 14048.2

応用: 工業用, 建物分布, domestic projects

Chint NM8‑250N/3P 160A

Match: 95%

Frame 250A, 3P, 160あ, 熱磁気

50kA at 415V AC

応用: civil construction, 一般配布

寸法 & Parameters Comparison

モデル	寸法 (幅×高さ×奥行き)	Mounting Centers	ICU (415V)	Release	フレーム
NSX250N‑3P‑160A	105×161×86mm	125mm×35mm	50の	顎関節症	250あ
ABB XT3N250 3P 160A	105×161×86mm	125mm×35mm	50の	TMG	250あ
Siemens 3VC250N 3P 160A	105×160×85mm	125mm×35mm	50の	TMA	250あ
CM3‑250H 3P 160A	108×162×86mm	125mm×35mm	50の	熱磁気	250あ