المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
Basic Overview
ABB A2X38/A2X38.2 is a 3-pole AC contactor belonging to the ABB Formula series. A2X38 is an earlier model (discontinued), while A2X38.2 is its upgraded replacement (currently in production). It is mainly used for controlling three-phase squirrel-cage motors and other power loads, and is suitable for industrial automation and building electrical systems. Ordering Code: 2TFC200010R2511
- Model Code Explanation
| Model Segment | Meaning |
| A2X | Formula series contactor with compact and cost-effective design |
| 38 | Rated operating current of 38A (ايه سي-3, 400V) |
| 0.2 | Second-generation upgraded version (improved type) |
| 30 | 3-اتصالات القطب الرئيسية, normally open configuration |
| 11 | Auxiliary contact configuration: 1 مفتوحة عادة + 1 مغلقة عادة |
| 13/25 | رمز الجهد لفائف: 13 = 380-400VAC, 25 = 220-240VAC |
| 380V50/60HZ | Rated coil voltage and frequency |
ثالثا. المعلمات التقنية الأساسية
- المعلمات الكهربائية
| Parameter Item | قيمة | Remarks |
| تصنيف التشغيل الحالي (ايه سي-3, 400V) | 38أ | Controlled motor power: 18.5KW (50هرتز) / 20hp (60هرتز) |
| تصنيف التشغيل الحالي (ايه سي-1, 400V) | 50أ | Resistive load |
| تصنيف الجهد العزل (Ui) | 690V | IEC standard |
| تصنيف العمل الجهد (Ue) | 400V (ايه سي-3), 690V (ايه سي-1) | |
| التحكم في جهد الملف | 220-240بطالة, 380-400بطالة, 110بطالة, 24VAC/DC, إلخ. | خيارات متعددة متاحة |
| Coil Frequency | 50/60هرتز | Universal design, no adjustment required |
| عمر الخدمة الميكانيكية | ≥10 million operations | |
| عمر الخدمة الكهربائية (ايه سي-3) | ≥1 million operations | Under rated load |
- Physical Characteristics
| Parameter Item | قيمة |
| طريقة التركيب | تركيب السكك الحديدية DIN (35mm standard rail), slider design for one-hand disassembly |
| Overall Dimensions (مم) | Approximately 85×105×55 (العرض × الارتفاع × العمق) |
| وزن | Approximately 0.5kg |
| فئة الحماية | IP20 (main body), IP00 for terminal blocks |
| Ambient Temperature | -25℃~+55℃ (operation), -40℃~+85℃ (storage) |
| درجة التلوث | درجة 3 |
- Core Product Features
- تصميم مدمج: Small size, saving 30% of installation space, suitable for high-density distribution cabinets.
- High Efficiency and Reliability: Silver alloy contacts with arc resistance, low contact resistance and long service life.
- Easy Installation: Quick snap-on fixing, auxiliary contact modules can be directly clipped without tools.
- Safety Assurance: Flame-retardant engineering plastic housing complying with UL94 V0 standard, built-in surge suppression (for some models).
- Modular Expansion: Accessories such as auxiliary contacts (up to 4 وحدات), mechanical interlocks, time-delay heads and surge suppressors can be added.
- سيناريوهات التطبيق النموذجية
Direct start and stop control of three-phase asynchronous motors (≤18.5kW/400V)
Electrical control of equipment such as fans, water pumps and compressors
Switch control of non-motor loads such as heating and lighting systems
Building electrical systems and industrial automation production lines
Replacement of old contactors for equipment upgrading and transformation
- Complete Model and Ordering Information
| Complete Model | الجهد لفائف | جهات الاتصال المساعدة | Ordering Code | Status |
| A2X38-30-01 380V | 380بطالة | 0 مفتوحة عادة + 1 مغلقة عادة | 10221469 | Discontinued |
| A2X38.2-30-11-13 | 380-400بطالة | 1 مفتوحة عادة + 1 مغلقة عادة | 10242059 | Currently in Production |
| A2X38.2-30-11-25 | 220-240بطالة | 1 مفتوحة عادة + 1 مغلقة عادة | 10242060 | Currently in Production |
| A2X38.2-30-00-13 | 380-400بطالة | No auxiliary contacts | 10242058 | Currently in Production |
سابعا. Installation and Wiring Specifications
خطوات التثبيت:
- Confirm that the installation environment meets the range of -25℃~+55℃, free from severe vibration and corrosive gases.
- Select a 35mm standard DIN rail and ensure the mounting surface is flat.
- Align the contactor’s snap with the rail, press down and slide to fix (one-hand operation).
- Cut off all power supplies before wiring, and use a multimeter to confirm no voltage exists.
- توصيلات الدائرة الرئيسية: L1/L2/L3 → input terminals, T1/T2/T3 → output terminals.
- Control circuit wiring: A1/A2 → coil power supply, 13/14 → normally open auxiliary contacts, 21/22 → normally closed auxiliary contacts.
- After wiring is completed, gently pull the wires to confirm they are connected firmly without loosening.
Terminal Block Specifications:
الدائرة الرئيسية: M6 bolts, suitable for copper core wires with cross-sectional area of 1.5-16mm²
دائرة التحكم: M3.5 bolts, suitable for copper core wires with cross-sectional area of 0.5-2.5mm²
VIII. Replacement Models and Compatibility
| Original Model | Direct Replacement Model | Upgraded Replacement Series | Remarks |
| A2X38 | A2X38.2 | AF38 Series | A2X38.2 is fully compatible with A2X38 in terms of installation dimensions and electrical performance |
| A2X38.2 | AF38-30-xx-xx | AF Series | AF series has advantages such as electronic coil (wide voltage range) and built-in surge suppression |
| AX38-30-xx | AX Series | Equivalent performance with slightly higher price |
- Troubleshooting Guide
| Fault Phenomenon | الأسباب المحتملة | الحلول |
| فشل المقاول في السحب | No voltage/low voltage on coil; Coil burnout; Mechanical jamming | Check the control circuit; Measure coil resistance (approximately several hundred ohms under normal condition); Clean foreign objects and lubricate moving parts |
| Excessive noise after pull-in | Low coil voltage; Oil stain/rust on iron core end face; Broken short-circuit ring | Adjust control voltage to rated value; Clean iron core end face; Replace coil assembly |
| Contact overheating/ablation | Load overload; Poor contact of contacts; الأسلاك فضفاضة | Check load current; Polish contacts or replace them; Re-tighten terminal blocks |
| Auxiliary contact failure | Contact wear; Wiring error | Replace auxiliary contact module; Check wiring polarity |
- Safety and Maintenance Precautions
- عملية انقطاع التيار الكهربائي: Cut off all power supplies before installation and maintenance, and hang the “No Switching On” sign.
- التفتيش المنتظم: Conduct inspection every 6 شهور, including contact wear, terminal tightness and coil temperature.
- Contact Replacement: Replace the main contacts in time when the wear amount exceeds 1mm or the surface is severely ablated.
- المتطلبات البيئية: Avoid use in humid and dusty environments; install a protective housing if necessary.
- Compatible Accessories: Only use auxiliary contacts, interlock devices and other accessories original or certified by ABB to ensure safety performance.
