1. انتهى المنتجview
The ABB Tmax XT4NU3250EFF000XXX is a high-performance molded case circuit breaker designed for reliable protection in various electrical systems. This device features a frame size XT4, rated for up to 250A, with voltage ratings of 600V (UL) and 690V (IEC). It incorporates an Ekip LS/I electronic trip unit, providing Long-Time (L), Short-Time (S), and Instantaneous (I) protection functions. This 3-pole circuit breaker is engineered for safety and efficiency in industrial and commercial applications.

An image showing the ABB Tmax XT4NU3250EFF000XXX Molded Case Circuit Breaker. The device is dark gray with a red and white handle, indicating its operational status. Various labels and connection points are visible on its front and sides.
2. معلومات السلامة
يجب دائمًا مراعاة احتياطات السلامة التالية لمنع الإصابة أو إتلاف المعدات:
- Installation, maintenance, and repair must be performed by qualified personnel only.
- Ensure all power sources are disconnected and locked out before working on the circuit breaker or associated circuitry.
- Use appropriate personal protective equipment (PPE) such as insulated gloves, safety glasses, and arc-flash protective clothing.
- تحقق من المجلد الصحيحtage and current ratings before installation.
- Do not operate the circuit breaker if it appears damaged or malfunctioning.
3. الإعداد والتثبيت
The ABB Tmax XT4NU3250EFF000XXX circuit breaker is designed for DIN Rail Mount installation. Proper installation is crucial for safe and reliable operation.
3.1 فحوصات ما قبل التثبيت
- Inspect the circuit breaker for any physical damage.
- Confirm that the product specifications match the system requirements.
- Ensure the mounting surface is clean and secure.
3.2 التركيب
- Securely attach the circuit breaker to a standard DIN rail.
- تأكد من التهوية المناسبة حول الجهاز لمنع ارتفاع درجة الحرارة.
3.3 الأسلاك
- Connect the main power supply conductors to the appropriate terminals (Line/Load) as indicated on the device.
- تأكد من أن جميع الوصلات محكمة وآمنة لمنع حدوث أي تلامس أو قوس كهربائي.
- Follow all local and national electrical codes for wiring practices.
- Verify correct polarity and phase sequence for multi-phase installations.
4. تعليمات التشغيل
The ABB Tmax XT4NU3250EFF000XXX circuit breaker is designed for straightforward operation.
4.1 تشغيل / إيقاف
- لتشغيل الجهاز: Push the operating handle firmly to the 'ON' position.
- لإيقاف التشغيل: Push the operating handle firmly to the 'OFF' position.
4.2 مؤشر الرحلة وإعادة الضبط
- If an overload or short-circuit occurs, the circuit breaker will automatically trip, moving the handle to an intermediate 'TRIPPED' position.
- لإعادة الضبط: First, move the handle fully to the 'OFF' position. Then, push the handle to the 'ON' position.
- Before resetting, investigate and resolve the cause of the trip. Repeated tripping indicates an underlying electrical issue.
5. الصيانة
تضمن الصيانة المنتظمة طول عمر وتشغيل قاطع الدائرة الخاص بك بشكل موثوق.
5.1 التفتيش الروتيني
- قم بفحص قاطع الدائرة بشكل دوري بحثًا عن أي علامات تشير إلى حدوث تلف مادي أو تغير في اللون أو توصيلات فضفاضة.
- Check for dust accumulation and keep the area around the breaker clean.
5.2 التنظيف
- تأكد من فصل التيار الكهربائي قبل التنظيف.
- Use a dry, lint-free cloth to wipe down the exterior of the circuit breaker. Avoid using solvents or abrasive cleaners.
5.3 الخدمة المهنية
For internal inspection, testing, or repair, contact qualified ABB service personnel or an authorized service center. Do not attempt to disassemble the circuit breaker yourself.
6. استكشاف الأخطاء وإصلاحها
يُقدّم هذا القسم إرشاداتٍ حول المشكلات الشائعة. أما بالنسبة للمشكلات المعقدة، فيُرجى استشارة كهربائي مؤهل.
6.1 انقطاع التيار الكهربائي بشكل متكرر
- السبب المحتمل: التحميل الزائد.
- فعل: Reduce the load on the circuit by unplugging some devices.
- السبب المحتمل: دائرة مقصورة.
- فعل: Inspect wiring and connected devices for faults. This requires professional attention.
- السبب المحتمل: Ground fault (if applicable to the specific trip unit configuration).
- فعل: Consult a qualified electrician to identify and rectify the ground fault.
6.2 Breaker Will Not Reset
- السبب المحتمل: Persistent fault (overload or short circuit).
- فعل: Ensure the cause of the trip has been resolved. If the fault persists, the breaker will not reset.
- السبب المحتمل: Internal damage to the breaker.
- فعل: If no fault is present and the breaker still won't reset, it may be damaged and require replacement by a qualified professional.
7. المواصفات
Detailed technical specifications for the ABB Tmax XT4NU3250EFF000XXX Molded Case Circuit Breaker:
| مواصفة | قيمة |
|---|---|
| ماركة | تين |
| نموذج | XT4NU3250EFF000XXX |
| التقييم الحالي | 250 Amps |
| المجلدtage Rating (UL) | 600 فولت |
| المجلدtage Rating (IEC) | 690 فولت |
| نوع الرحلة | Ekip LS/I (Electronic, LS/I Protection) |
| عدد الاقطاب | 3 |
| نوع قواطع دوائر | LS |
| نوع التركيب | جبل السكك الحديدية DIN |
| أبعاد الحزمة | 8.26 × 6.49 × 6.1 بوصة |
| وزن | 5.51 رطل |
| تاريخ أول توفر | 25 يونيو 2018 |
8. معلومات الضمان
ABB products are manufactured to high standards and typically come with a manufacturer's warranty. For specific warranty terms and conditions applicable to your ABB Tmax XT4NU3250EFF000XXX circuit breaker, please refer to the official documentation provided with your purchase or visit the official ABB webالموقع. احتفظ بإثبات الشراء الخاص بك لتقديم مطالبات الضمان.
9. الدعم والاتصال
For technical assistance, product inquiries, or service requests, please contact ABB customer support. You can find contact information and additional resources on the official ABB webموقع.
مسؤول ABB Webموقع: Visit the ABB Store on Amazon
Always provide the full model number (XT4NU3250EFF000XXX) when contacting support to ensure accurate assistance.





