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
Technical Specifications & Application Guide
This is a 2‑pole, タイプC, 25あ miniature circuit breaker (MCB) from Schneider Electric’s Acti9 series, with order code A9F18225 and rated breaking capacity 6kA.
It provides overload and short‑circuit protection for lighting, socket, and small motor circuits in AC distribution systems.
Features include 3‑stage current limiting, quick make mechanism, and protection degree IP40 (front) / IP20 (terminals).
It is compatible with iC65 series accessories for functional expansion.
- Model Breakdown
| コード | 意味 | Description |
| SCHNEIDER | ブランド | シュナイダーエレクトリック (France), global electrical equipment manufacturer |
| iC65N | シリーズ | Acti9 iC65 MCB, N‑type breaking capacity (6の) |
| 2P | Number of poles | 2‑pole, breaks phase and neutral simultaneously, for 230V/400V systems |
| C | Tripping curve | タイプC, instantaneous tripping at 5~10×In (5In~10In) |
| 25あ | 定格電流 | 25 amperes continuous at 30°C ambient |
| A9F18225 | Full order code | Official unique identifier |
- Core Specifications
| Item | Specification | 注意事項 |
| 基本 | ||
| タイプ | 小型サーキットブレーカー (MCB) | Complies with IEC 60898-1 / GB 10963.1 |
| Tripping type | Thermal‑magnetic | Overload (thermal) + short‑circuit (magnetic) protection |
| 遮断容量 | 6の | Max breaking current at rated voltage |
| 定格動作電圧 | AC 230V/400V | For 2‑pole version |
| 定格絶縁電圧 | 500V | Max withstand voltage of insulation |
| 定格インパルス耐電圧 | 6kV | Surge voltage immunity |
| Rated frequency | 50/60Hz | Global grid compatible |
| Tripping characteristics | ||
| 過負荷保護 | 1.13で (no trip in 1h), 1.45で (trip within 1h) | Meets IEC requirements |
| Short‑circuit protection | Instantaneous at 5In~10In | タイプC, suitable for lighting, resistive loads, small motors |
| Physical & environmental | ||
| 寸法 (W×H×D) | 18mm×86mm×62mm | Standard modular, 2P = 2 modules (18mm/pole) |
| 保護等級 | IP40 (front), IP20 (terminals) | Solid object and moisture protection |
| 動作温度 | -35°C ~ +70°C | Suitable for harsh industrial environments |
| 取り付け | 35mm DIN rail | Standard panel mounting |
| Certifications | CCC, CE, RoHS | Meets Chinese and international safety & environmental standards |
- Features
- Protection performance
3‑stage current limiting: Quickly limits peak current during short circuit, reduces thermal stress, protects equipment and cables.
Selective protection: Coordinates with upstream breakers for selective tripping, limits fault area.
Fault indication: Red window shows tripped status for quick diagnosis.
- Structural advantages
Dual‑lock clip: Secures firmly on DIN rail, prevents vibration loosening.
Quick make mechanism: Improves closing speed, reduces arcing, extends life.
モジュラー設計: Accepts auxiliary contacts, alarm contacts, shunt trip, undervoltage trip, 等.
- Safety design
Isolation function: Safe isolation distance in OFF position, meets electrical safety rules.
Anti‑misoperation: Handle design prevents accidental closing.
Flame‑retardant housing: V0 grade material improves cabinet safety.
- インストール & メンテナンス
Installation Rules
- 垂直に取り付ける (±15°) for proper tripping.
- Wiring: Copper 1.5~35mm², Aluminium 2.5~35mm², torque 1.2~4N·m (depends on cross‑section).
- Environment: Avoid damp, ほこりっぽい, corrosive or high‑vibration locations.
- Spacing: Maintain clearance for heat dissipation; follow installation manual.
Maintenance Guide
| Item | Interval | Criterion | Solution |
| Visual inspection | 毎月 | No damage, no overheating, tight connections | Clean, tighten loose terminals |
| Function test | Quarterly | Manual ON/OFF smooth, no sticking | Operate 3–5 times, check mechanism |
| Trip test | Annually | Overload & short‑circuit protection functional | Test with dedicated equipment or simulate overload |
| Accessory check | Annually | Auxiliary & alarm contacts working | Check contact condition, replace damaged parts |
トラブルシューティング
- Frequent tripping: Check overload → short circuit → high ambient temperature → aging.
- Cannot close: Check short circuit → handle position → trip reset → loose wiring.
- Overheating: Check terminal torque → overload → ventilation.
- アップグレード & Replacement
5.1 Same‑series Upgrades
iC65H-2P-C25A (A9F28225): H‑type, 10の, for higher short‑circuit current.
iC65L-2P-C25A (A9F38225): L‑type, 15の, for heavy industrial use.
iC65N-2P-C25A‑Vigi (A9V58225): With residual current protection (RCCB), prevents electric shock.
5.2 Functional Accessories
| Accessory | 代表的なモデル | Function |
| Auxiliary contact | A9A26924 | 1NO+1NC, remote status indication |
| Shunt trip | A9X16224 | Remote tripping, 例えば, fire alarm |
| Undervoltage trip | A9X16624 | Auto‑trip on low voltage |
| Alarm contact | A9A27924 | Signal when breaker trips |
5.3 Cross‑series Alternatives
| シリーズ | Replacement | 互換性 |
| Easy9 | EA9AN 2P C25A | Same dimensions, 6の, economical |
| Acti9 CVS | CVS100B 2P C25A | MCCB, higher breaking capacity (10の), main circuit use |
| Merlin Gerin | C65N 2P C25A | Fully compatible with iC65 |
- Applications
- Commercial buildings: Offices, shops, hotels – lighting & socket circuits.
- 産業オートメーション: Control panels, small motors (≤5.5kW), VFD input protection.
- Residential: Home distribution – air conditioners, kitchen appliances.
- Public facilities: Schools, 病院, stadiums – electrical safety.
- Selection & Purchasing Tips
- Load matching: Type C for lighting, ソケット, small motors (≤5.5kW). Use Type B for pure resistive, Type D for large motors.
- 遮断容量: Choose N (6の), H (10の), L (15の) based on system short‑circuit current.
- 極: 2P for 230V single‑phase where phase + neutral must be disconnected.
- Accessories: Add aux, shunt, undervoltage for smart systems.
- Authenticity: Buy from authorized Schneider distributors.
- Quick Fault Guide
| Symptom | Possible Cause | Solution |
| Trips immediately after closing | Short circuit / 過負荷 | Locate short, reduce load or upsize breaker |
| Trips after running a while | Overload / high temperature | Reduce load, 通気性を改善する, check cable size |
| Handle cannot be pushed to ON | Not reset / wiring fault | Pull to OFF first, then ON; check circuit |
| Terminal overheating | Loose connection | Retorque after power off, check terminals |
| No operation | Thermal‑magnetic unit failed | Replace MCB, check coordination |
SCHNEIDER iC65N-2P-C25A
Cross‑Brand Replacement Guide
Core Summary: The iC65N-2P-C25A (A9F18225) can be directly replaced by equivalent MCBs from major international and domestic brands.
Key matching requirements:
2P, タイプC, 25あ, 6の, 35mm DIN rail mounting.
- International Brand Direct Replacements
ABB
| Replacement | Order Code | Breaking | 互換性 |
| S202-C25 | 2CDS252001R0254 | 6の | Best match, same dimensions, direct swap |
| S202M-C25 | 2CDS262001R0254 | 10の | Higher breaking capacity |
| S202L-C25 | 2CDS242701R0254 | 4.5の | Economy option |
シーメンス
| Replacement | シリーズ | Breaking | 互換性 |
| 5SL6225-7 | 5SL | 6の | Direct replacement, IEC 60898-1 |
| 5SY6225-7 | 5SY | 6の | Economy range |
| 5SN6225-7CN | 5SN | 6の | Classic, reliable |
Eaton
| Replacement | シリーズ | Breaking | 互換性 |
| FAZ6-C25/2 | FAZ | 6の | Same dimensions & mounting |
| PL9-C25/2 | PL9 | 6の | High performance, fast limiting |
Moeller
| Replacement | シリーズ | Breaking | 互換性 |
| FAZ6-C25/2 | FAZ | 6の | Same dimensions & mounting |
| PL9-C25/2 | PL9 | 6の | High performance, fast limiting |
- Chinese Domestic Brands
| ブランド | Replacement | Breaking | 互換性 |
| CHINT | NXB-63-2P C25 | 6の | Cost‑effective, direct fit |
| DELIXI | CDM3-63C25/2P | 6の | Same dimensions |
| Liangxin | NDM1-63C25/2P | 6の | High quality domestic |
| TENGEN | TGM1-63C25/2P | 6の | 基本的な保護, economical |
- Critical Parameter Matching
| Item | Original (iC65N-2P-C25A) | 一致する必要があります | Adjustable | 注意事項 |
| 極 | 2P | 2P | – | Disconnect phase + neutral |
| Curve | タイプC (5~10In) | タイプC | – | For lighting & small motors |
| Current | 25あ | 25あ | – | Continuous rating |
| Breaking | 6の | ≥6kA | Can be higher (10の) | Ensure safe short‑circuit interruption |
| 取り付け | 35mm DIN rail | 35mm DIN rail | – | Standard panel mount |
| Width | 18mm | 18mm | H/D may vary | Fits standard spacing |
| Voltage | AC 230V/400V | AC 230V/400V | – | Universal AC system |
- Replacement Notes & Best Practice
Before Replacement
System short‑circuit current ≤ breaking capacity of replacement.
35mm DIN rail, space, terminal size compatible.
Protection coordination with upstream/downstream devices.
Accessory mounting interface compatible.
Replacement has valid certifications (CCC, CE).
Procedure
- Power off and verify voltage absence.
- Remove wiring and old breaker.
- Clip replacement onto DIN rail.
- Torque terminals correctly.
- Test ON/OFF and tripping.
- Update labeling and drawings.
When NOT to replace
Original uses dedicated Schneider accessories (例えば, Vigi modules).
System short‑circuit current exceeds replacement rating.
Load inrush >10で (unsuitable for Type C).
Extreme environment outside replacement specs.
- Recommended Replacement Levels
| レベル | Recommended Models | 応用 | アドバンテージ |
| 1st | ABB S202-C25 | Industry, commerce | Full performance, global support |
| Siemens 5SL6225-7 | |||
| 2nd | Eaton FAZ6-C25/2 | Control panels | Good value, easy install |
| Moeller DIL M9-25 C/2 | |||
| 3rd | CHINT NXB-63-2P C25 | Residential, economy | Low cost, fast local supply |
| DELIXI CDM3-63C25/2P |
- Common Issues & ソリューション
| Issue | Cause | Solution |
| Frequent tripping after replacement | Wrong curve / 過負荷 | Confirm Type C, check load, upsize if needed |
| Will not fit | Wrong rail / 幅 | Use 35mm DIN rail, 18mm width model |
| Wiring difficult | Incompatible terminals | Use suitable lugs or select compatible model |
| Insufficient breaking capacity | Replacement < system short鈥慶ircuit current | Use higher version (例えば, ABB S202M-C25, 10の) |
Cross‑brand replacement for SCHNEIDER iC65N-2P-C25A depends on parameter matching + mechanical compatibility + protection coordination.
Top international brands (ABB, シーメンス) give identical performance.
Domestic brands (CHINT, DELIXI) offer cost savings.
Always verify specifications and follow electrical safety standards.
