コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
完全なモデルの解釈 (Formula A2 Series)
| モデルセグメント | 意味 | 完全なモデルの例 |
| AC250 | A-series ノーヒューズサーキットブレーカー, Type C breaking capacity (25の), frame current 250A | A2C 250 TMF 150-1500 4p F F |
| 4P | 4-ポール (3-段階 + 中性), suitable for TN-C-S/TN-S systems, provides neutral line protection | 1SDA068783R1 (ABB official order number) |
| 150あ | Rated operating current 150A, thermal-magnetic trip unit setting range 150-1500A | Thermal protection current Ith=150A, magnetic protection current Im=1500A |
| TMF | 熱磁気トリップユニット, provides overload long-time delay and short-circuit instantaneous protection | 標準構成, no external protection device required |
| FF | Fixed mounting method, front terminal connection (rear connection/plug-in type optional) | Suitable for standard distribution cabinet installation |
- コアの電気パラメータ
| パラメータ項目 | 価値 | 説明 |
| 定格電圧 | 400Vと (50/60Hz), 690V AC optional | IECに準拠 60947-2 標準, insulation voltage Ui=690V |
| 定格電流 | 150あ | Long-term stable operating current at 40℃ ambient temperature |
| フレーム電流 | 250あ | Maximum current carrying capacity of the circuit breaker |
| 遮断容量 | 25の (400Vと) | Type C breaking capacity, suitable for general industrial and commercial buildings |
| トリップ特性 | 熱保護: No operation at 1.05×Ith, operation within 1 hour at 1.3×Ith | Effectively protects motors and cables from overload and short-circuit damage |
| 磁気保護: Instantaneous operation at 10×Ith (1500あ) | ||
| 極数 | 4P (3L+N) | All poles have protection function, neutral line can also be disconnected |
| 接続方法 | フロント接続 (標準), rear connection optional | Copper bar connection, ボルト締め, 信頼できる連絡先 |
| 保護クラス | IP20 | Suitable for indoor cabinet installation, prevents finger contact with live parts |
Ⅲ. Structural and Functional Characteristics
- Mechanical and Physical Characteristics
寸法: 90mm (W) × 160mm (H) × 105mm (D) (standard 4-pole size), complies with modular design, easy for side-by-side installation
操作方法: 回転ハンドル (red for OFF/green for ON), with clear position indication, moderate operating torque
機械的寿命: 20,000 回 (open-close cycles), 電気的寿命: 5,000 回 (定格電流時)
取付方法: 固定式 (標準), plug-in/withdrawable type optional, suitable for different maintenance requirements
- 保護機能 (TMF Thermal-Magnetic Trip)
| 保護タイプ | Operating Condition | アプリケーションシナリオ |
| Overload Long-Time Delay | Delayed operation based on heating when current exceeds rated value | Protection against slow overloads such as motor locked rotor and cable overload |
| Short-Circuit Instantaneous | Instantaneous tripping when current reaches 10*rated value (1500あ) | Protection against severe faults such as line short circuit and equipment insulation breakdown |
| アイソレーション機能 | Has isolation capability when handle is in OFF position | Ensures complete circuit disconnection during maintenance, guarantees personnel safety |
| Phase Unbalance Protection | Operates when three-phase current difference exceeds set value | Protection against motor phase loss operation, extends equipment service life |
- アクセサリ拡張機能
Optional Under-Voltage Release (UVR): Trips when voltage is below 70% of rated value, prevents equipment damage caused by low-voltage operation
Optional Shunt Trip: Remote control tripping, realizes functions such as fire linkage
Optional Auxiliary Contacts: 2NO+2NC, used for status indication or control circuit
Optional Alarm Contacts: 1いいえ, used for fault alarm signal output
- アプリケーションシナリオと選択の推奨事項
- 典型的なアプリケーションシナリオ
| 応用分野 | Specific Usage | Selection Advantage |
| 産業オートメーション | Control and protection of 380V three-phase motors (≤75kW) | Dual protection against overload and short circuit, adapts to motor starting impact |
| 商業ビル | Main switch for air conditioning systems, ウォーターポンプ, ファンおよびその他の機器 | 4-ポールデザイン, suitable for building distribution TN-S system |
| データセンター | UPS output end, rack power distribution unit main switch | Reliable breaking capacity, ensures power supply continuity |
| Residential Buildings | Community distribution room, unit building main switch | コンパクトなサイズ, 簡単な取り付け, メンテナンスコストが低い |
- Key Selection Matching Points
- 負荷タイプのマッチング
モーター負荷: Select 1.2-1.3×motor rated current (150A suitable for ≤75kW motors)
Lighting/socket load: Select 1.0-1.1×calculated current
Mixed load: Select according to the largest load type, taking into account other loads
- 遮断容量の選択
General distribution system: 25の (タイプC) 十分です
Locations close to transformers or with large short-circuit current: Select models with 36kA (タイプN) or 50kA (タイプH) 遮断容量
- System Earthing Configuration
TN-C-S/TN-S system: 4-pole circuit breaker must be selected to provide neutral line protection
TT system: 3P or 4P can be selected as required
- 設置とメンテナンスのポイント
- 設置仕様
環境要件: Temperature -5℃~+40℃ (derating required when exceeding 40℃, 2% derating per 1℃ increase), 湿度 ≤95% (結露なし)
設置位置: 縦置き設置 (handle upward), reserve ≥50mm space above and below to ensure good heat dissipation
配線要件: Copper bar cross-sectional area ≥70mm² (for 150A current), bolt torque complies with ABB specifications (20Nm for M8 bolts)
- メンテナンスに関する推奨事項
定期点検 (毎 6 月): Check handle operation flexibility, terminal tightness, and trip unit function test
障害処理: Troubleshoot the cause (overload/short circuit) after tripping, reset only after fault elimination, forced closing is strictly prohibited
生活管理: Replace in time when mechanical/electrical life is reached to ensure protection reliability
- Replacement and Upgrade Solutions
- Same-Series Replacement
| t | ||
| オリジナルモデル | 代替機種 | 違いの説明 |
| AC250-4P-150A (タイプC) | A2N 250 TMF 150-1500 4p F F | Type N breaking capacity 36kA, suitable for occasions with large short-circuit current |
| AC250-4P-150A (TMF) | A2C 250 PR211-LI 150 4p F F | Electronic trip unit with adjustable protection parameters, suitable for complex loads |
- アップグレードソリューション
インテリジェントなアップグレード: Replace with Formula A2 series model with PR221-LI electronic trip unit, supports communication function (Modbus) to realize remote monitoring and fault diagnosis
Breaking Capacity Upgrade: Upgrade to XT series (例えば, XT3S 250 顎関節症 150 4P), breaking capacity up to 50kA, suitable for heavy industry environments
Ⅶ. まとめ
ABB モールドケースサーキットブレーカ AC250-4P-150A (complete model A2C 250 TMF 150-1500 4p F F) is a cost-effective and reliable general-purpose protection electrical device, suitable for most 400V low-voltage distribution systems. Its core advantages are:
- 4-Pole Full Protection: Suitable for modern building TN-S distribution system, neutral line can also get effective protection
- 25kA Breaking Capacity: Meets the short-circuit protection requirements of general industrial and commercial buildings
- TMF Thermal-Magnetic Trip: No external protection device required, 設置とメンテナンスが簡単
- モジュラー設計: Supports expansion of various accessories to adapt to different application scenarios
Selection should be comprehensively considered according to load type, short-circuit current size and system earthing configuration to ensure the circuit breaker matches the system and provides the best protection effect.
Detailed Comparison Table of ABB AC250-4P-150A and Same-Specification Molded Case Circuit Breakers of Mainstream Brands
- コアパラメータ比較表 (250フレーム, 4P, 150あ, 熱磁気トリップ, 25kA Breaking Capacity)
| パラメータ項目 | ABB Formula A2 | Schneider EZD | Schneider CVS | Siemens 3VC2 | Chint NXM |
| 完成モデル | A2C 250 TMF 150-1500 4p F F (AC250-4P-150A) | EZD250M150EL 4P | CVS250F TMD 150 4P | 3VC2225-1TM30-0AA0 | NXM-250S/4300B 150A |
| 注文番号 | 1SDA068783R1 | LV510349 | LV525330 | 3VC22251TM300AA0 | NXM-250S/4300B-150 |
| 定格電流 | 150あ | 150あ | 150あ | 150あ | 150あ |
| フレーム電流 | 250あ | 250あ | 250あ | 250あ | 250あ |
| 極数 | 4P (3L+N, 完全な保護) | 4P (3L+N, 完全な保護) | 4P (3L+N, 完全な保護) | 4P (3L+N, 完全な保護) | 4P (3L+N, 完全な保護) |
| 遮断容量 | 25の (400Vと) | 25の (400Vと) | 36の (400Vと) | 25の (400Vと) | 25の (400Vと) |
| トリップユニットの種類 | TMF (熱磁気, 150-1500あ) | 彼 (熱磁気, 150-1500あ) | 顎関節症 (熱磁気, 150-1500あ) | TM30 (熱磁気, 150-1500あ) | 熱磁気 (150-1500あ) |
| 定格電圧 | 400Vと (50/60Hz), 690V optional | 400Vと (50/60Hz) | 400Vと (50/60Hz) | 400Vと (50/60Hz) | 400Vと (50/60Hz) |
| 絶縁電圧 | 690V | 690V | 690V | 690V | 690V |
| 取付方法 | 修理済み, front connection (FF) | 修理済み, front connection | 修理済み, front connection | 修理済み, front connection | 修理済み, front connection |
| 接続方法 | フロント接続 (rear connection/plug-in optional) | フロント接続 | フロント接続 | フロント接続 | フロント接続 |
| 保護クラス | IP20 | IP20 | IP20 | IP20 | IP20 |
| 寸法 (W*H*D) | 90mm*160mm*105mm | 90mm*155mm*100mm | 90mm*155mm*100mm | 90mm*160mm*105mm | 90mm*158mm*102mm |
| 機械的寿命 | 20,000 サイクル | 20,000 サイクル | 20,000 サイクル | 20,000 サイクル | 15,000 サイクル |
| 電気的寿命 | 5,000 サイクル | 5,000 サイクル | 5,000 サイクル | 5,000 サイクル | 4,000 サイクル |
| 価格帯 (人民元) | 1,200-1,500 人民元 | 900-1,100 人民元 | 1,000-1,300 人民元 | 1,100-1,400 人民元 | 600-800 人民元 |
- Protection Function Comparison
| 保護機能 | ABB Formula A2 | Schneider EZD | Schneider CVS | Siemens 3VC2 | Chint NXM |
| Overload Long-Time Delay | ✓ No operation at 1.05×Ith, operation within 1 hour at 1.3×Ith | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics |
| Short-Circuit Instantaneous | ✓ Instantaneous operation at 10×Ith (1500あ) | ✓ Instantaneous operation at 10×Ith (1500あ) | ✓ Instantaneous operation at 10×Ith (1500あ) | ✓ Instantaneous operation at 10×Ith (1500あ) | ✓ Instantaneous operation at 10×Ith (1500あ) |
| Short-Circuit Short-Time Delay | Optional electronic trip unit (PR211-LI) | Optional electronic trip unit | Optional electronic trip unit | Optional electronic trip unit | Optional electronic trip unit |
| Under-Voltage Protection | Optional under-voltage release (UVR) | Optional under-voltage release | Optional under-voltage release | Optional under-voltage release | Optional under-voltage release |
| シャントトリップ | Optional shunt trip | Optional shunt trip | Optional shunt trip | Optional shunt trip | Optional shunt trip |
| 補助接点 | 2NO+2NC optional | 2NO+2NC optional | 2NO+2NC optional | 2NO+2NC optional | 2NO+2NC optional |
| 警報接点 | 1NO optional | 1NO optional | 1NO optional | 1NO optional | 1NO optional |
| アイソレーション機能 | ✓ Isolation capability when handle is in OFF position | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics |
| Phase Unbalance Protection | ✓ Operates when three-phase current difference is excessive | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics | ✓ Same characteristics |
Ⅲ. Performance Characteristics and Application Scenario Comparison
| Brand Series | 主な利点 | アプリケーションシナリオ | 交換の推奨事項 |
| ABB Formula A2 | • High mechanical strength, 長寿命 | • Industrial automation systems | Key circuits requiring high reliability, can directly replace Siemens 3VC2 and Schneider CVS |
| • Strong accessory compatibility | • Commercial building power distribution | ||
| • Reliable neutral line protection | • Data center UPS output | ||
| Schneider EZD | • Cost-effective, 簡単な取り付け | • Residential buildings | Projects with limited budget, can replace ABB A2 and Siemens 3VC2, 20% 低価格 |
| • Compact size, suitable for compact distribution cabinets | • Small industrial equipment | ||
| • Lighting systems | |||
| Schneider CVS | • Higher breaking capacity (36の) | • Heavy-duty loads | 短絡電流が大きい場合, more suitable for industrial applications than EZD |
| • Good thermal stability | • Distribution circuits close to transformers | ||
| • Suitable for frequent operation | • Motor control with frequent start-stop | ||
| Siemens 3VC2 | • German manufacturing technology, 高精度 | • Siemens automation system integration | First choice for users of Siemens ecosystem, can directly replace ABB A2 |
| • Good compatibility with Siemens PLC | • Precision equipment protection | ||
| • Complete diagnostic functions | • Building automation | ||
| Chint NXM | • Lowest price, extremely cost-effective | • Residential buildings | Cost-priority projects, can reduce procurement cost by 40%, performance meets basic requirements |
| • First choice for domestic replacement | • Non-critical load circuits | ||
| • Perfect after-sales service network | • Budget-sensitive projects |
- 選定のポイント
- 遮断容量のマッチング
General distribution system: 25kA breaking capacity is sufficient (ABB A2C, Schneider EZD, Siemens 3VC2, Chint NXM)
Locations with large short-circuit current: Select 36kA breaking capacity (Schneider CVS) or 50kA breaking capacity (ABB A2N, シュナイダー NSX)
- System Earthing Configuration Adaptation
TN-C-S/TN-S system: 4-pole circuit breaker must be selected, all brands provide full-pole protection
TT system: 4P or 3P+N can be selected to ensure reliable neutral line disconnection
- Load Type Selection
| 負荷の種類 | Recommended Brand Series | 理由 |
| モーター負荷 (≤75kW) | ABB A2, Schneider CVS | Strong overload capacity, adapts to motor starting impact |
| Lighting/Socket Load | Schneider EZD, Chint NXM | お手頃な価格, 基本的な保護要件を満たしている |
| Mixed Load | Siemens 3VC2, ABB A2 | Comprehensive protection characteristics, adapts to various loads |
| 重要な機器 | Schneider CVS, ABB A2 | 高い信頼性, 長寿命 |
- Accessory Expansion Requirements
リモコン: シャントトリップの選択 + 補助接点
Voltage Monitoring: Select under-voltage release
状態監視: Select alarm contacts + 通信モジュール (electronic trip unit model)
- まとめ
| ブランド | Comprehensive Score (10 ポイント) | 価格の優位性 | Performance Advantage | Application Scenario Priority |
| ABB Formula A2 | 9 | ★★★☆☆ | ★★★★★ | 産業オートメーション > 商業ビル > Residential Buildings |
| Schneider EZD | 8 | ★★★★☆ | ★★★☆☆ | Residential Buildings > Small Industry > Non-critical Loads |
| Schneider CVS | 8.5 | ★★★☆☆ | ★★★★☆ | Industrial Applications > Critical Loads > 商業ビル |
| Siemens 3VC2 | 8.5 | ★★★☆☆ | ★★★★☆ | Siemens Ecosystem > Precision Equipment > 自動化システム |
| Chint NXM | 7.5 | ★★★★★ | ★★★☆☆ | Residential Buildings > Budget-sensitive Projects > Non-critical Loads |
Selection should be comprehensively considered based on four core factors: 負荷の種類, short-circuit current size, system earthing configuration and budget to ensure the circuit breaker perfectly matches the system and provides the best protection effect. For most conventional applications, ABB AC250-4P-150A is an excellent choice balancing performance and price; Chint NXM is an ideal domestic replacement solution when budget is limited; Schneider CVS series is recommended for upgrade when short-circuit current is large.
