کلید مینیاتوری (MCB) مدل VF003

What is the VIOX VF003 Miniature Circuit Breaker?

The VF003 is a premium miniature circuit breaker (MCB) designed for comprehensive electrical protection in residential, commercial, and industrial applications. This NF-certified circuit breaker provides reliable protection against short-circuit currents, overload conditions, and serves as an effective isolation switch in electrical distribution systems.

Why Choose the VF003 MCB for Your Electrical Installation?

In today’s electrical systems, safety and reliability are paramount. The VIOX VF003 miniature circuit breaker stands out as a versatile protection device with multiple certifications (NF, UKCA, CE) and exceptional performance characteristics. Whether you’re working on domestic installations or complex industrial systems, the VF003 MCB offers the protection and functionality needed for modern electrical networks.

Key Features and Benefits of the VF003 Miniature Circuit Breaker

Superior Protection Mechanism

The VF003 MCB features a dual protection system:

• Thermal protection: Guards against prolonged overload conditions
• Magnetic protection: Provides instant tripping during short-circuit events

This comprehensive protection mechanism ensures your electrical systems remain safe under various fault conditions, preventing damage to connected equipment and reducing fire hazards.

Versatile Current Ratings

The VF003 is available in multiple current ratings to suit various application requirements:

• 2A, 6A, 10A, 16A, 20A, 25A, and 32A

This range allows electrical designers and installers to select the precise rating needed for specific circuit loads, providing optimal protection without unnecessary tripping.

Multiple Trip Curve Options

The VF003 MCB offers specialized tripping curves tailored to different application needs:

• B curve (3-5In): Ideal for protecting people and long cable runs in TN and IT systems
• C curve (5-10In): Perfect for resistive and inductive loads with low inrush current
• D curve (10-14In): Designed for circuits supplying loads with high inrush current at circuit closing (LV/LV transformers, breakdown lamps)

This variety allows for precise protection coordination based on the specific characteristics of your electrical installation.

ظرفیت شکست بالا

With breaking capacities of 3000A, 4500A, and 6000A, the VF003 MCB can safely interrupt high fault currents, providing robust protection even in demanding industrial environments.

Technical Specifications: VF003 Miniature Circuit Breaker

ویژگی‌های الکتریکی

پارامتر	مشخصات	استاندارد
شماره مدل	VF003	IEC/EN 60898-1
لهستانی‌ها	۱P+N
جریان نامی ورودی	2A, 6A, 10A, 16A, 20A, 25A, 32A
ولتاژ نامی UE	120V, 230/400V ~ 240/415V
ولتاژ عایق رابط کاربر	۵۰۰ ولت
فرکانس نامی	۵۰/۶۰ هرتز
Rated breaking capacity	3000A, 4500A, 6000A
Energy limiting class	3
ولتاژ قابل تحمل ضربه (1.2/50) Uimp	4000V
ولتاژ تست دی الکتریک در فرکانس صنعتی به مدت ۱ دقیقه	2Kv	1.89kV
درجه آلودگی	2
Thermo-magnetic release characteristic	B, C	(8 – 12) In
عمر الکتریکی	10,000

ویژگی‌های مکانیکی

پارامتر	مشخصات
عمر مکانیکی	20,000 cycles
نشانگر موقعیت تماس	بله
Protection degree	آی پی ۲۰
Reference temperature for setting of thermal element	۳۰ درجه سانتی‌گراد
دمای محیط (با میانگین روزانه ≤35 درجه سانتیگراد)	-5°C to 40°C
دمای نگهداری	-25°C to 70°C

Installation Specifications

پارامتر	مشخصات
نوع اتصال ترمینال	Cable/U-type busbar/Pin-type busbar
اندازه ترمینال بالا/پایین برای کابل	25 mm² / 18-4 AWG
اندازه ترمینال بالا/پایین برای باسبار	10 mm² / 18-8 AWG
گشتاور سفت کردن	2.5 N·m / 22 In-lbs.
نصب	روی ریل DIN مطابق با استاندارد EN 60715 (35 میلی‌متر) با استفاده از گیره سریع
اتصال	از بالا و پایین

Accessory Compatibility

ویژگی	در دسترس بودن
تماس کمکی	بله
Shunt release	بله
Under voltage release	بله
تماس با زنگ هشدار	بله

Applications of the VF003 Miniature Circuit Breaker

سیستم‌های برق مسکونی

The VF003 MCB is perfect for home electrical installations, providing:

• Protection for lighting circuits
• Safety for power outlets
• Overload protection for household appliances
• Short-circuit protection for domestic wiring

ساختمان‌های تجاری

In commercial environments, the VF003 offers:

• Reliable protection for office equipment
• Security for lighting systems
• Safety for HVAC systems
• Protection for sensitive electronic equipment

کاربردهای صنعتی

For industrial settings, the VF003 provides:

• Motor protection (with appropriate rating selection)
• حفاظت مدار کنترل
• Distribution board safety
• Equipment isolation capability

Selection Guidelines for the VF003 MCB

How to Choose the Right Current Rating

1. Calculate the load current: Determine the maximum continuous current your circuit will carry
2. Apply safety factor: Select an MCB rating that’s approximately 25% higher than the calculated load current
3. Consider startup currents: For motors and other high-inrush equipment, factor in the starting current
4. Check cable ratings: Ensure the selected MCB rating is compatible with the installed cable size

How to Select the Appropriate Trip Curve

• منحنی B: Select for residential lighting, socket outlets, and general purpose circuits
• منحنی C: Choose for small transformers, fluorescent lighting, and standard motors
• منحنی D: Use for transformers, motors with high starting currents, and welding equipment

Breaking Capacity Selection

The breaking capacity of the VF003 should always exceed the maximum potential short-circuit current at the installation point. Consider:

1. Installation location: Proximity to the main distribution board
2. Supply transformer size: Larger transformers can deliver higher fault currents
3. Cable impedance: Longer cable runs reduce available fault current

Installation Best Practices for the VF003 MCB

دستورالعمل نصب

1. The VF003 mounts securely on standard 35mm DIN rails (EN 60715) using the integrated fast clip device
2. Ensure sufficient space around the MCB for proper heat dissipation
3. Install in a vertical position with ON/OFF markings oriented correctly
4. Maintain minimum clearances as specified in installation guidelines

دستورالعمل‌های سیم‌کشی

1. Use the appropriate cable size (up to 25 mm² or 18-4 AWG)
2. Tighten terminal screws to the specified torque (2.5 N·m or 22 In-lbs)
3. Strip conductors to the correct length before insertion
4. Check that all connections are secure before energizing

آزمایش و راه اندازی

1. Visually inspect the installation for proper mounting and connection
2. Test the operation of the manual switch mechanism
3. Verify the isolation function by measuring across open contacts
4. Test the tripping function using appropriate test equipment

تعمیر و نگهداری و عیب‌یابی

Regular Maintenance Checks

1. بازرسی بصری: Check for signs of overheating or damage
2. Manual operation test: Periodically toggle the switch to ensure smooth operation
3. Terminal tightness: Verify that all connections remain secure
4. مقاومت عایق: Periodically measure the insulation resistance across open contacts

مشکلات و راه‌حل‌های رایج

مشکل	Possible Cause	راه حل
زمین خوردن مکرر	مدار بیش از حد بارگذاری شده	Reduce the load or install higher rated MCB
	اتصال کوتاه	Identify and repair the fault
	Nuisance tripping	Consider changing to a more suitable trip curve
MCB won’t reset	Persistent fault	Locate and clear the fault before resetting
	آسیب مکانیکی	Replace the MCB
گرمای بیش از حد	اتصالات شل	Tighten terminals to specified torque
	اضافه بار	کاهش بار مدار

استانداردها و گواهینامه‌ها

The VF003 miniature circuit breaker complies with multiple international standards:

• IEC/EN 60898-1: International standard for MCBs
• NF certification: French quality and safety standard
• UKCA approval: UK Conformity Assessed mark
• نشان CE: European conformity certification

These certifications ensure the VF003 meets stringent quality and safety requirements for electrical protection devices.

ملاحظات زیست‌محیطی

شرایط عملیاتی

The VF003 MCB is designed to operate reliably under the following conditions:

• Ambient temperature range: -5°C to 40°C (with daily average ≤35°C)
• Storage temperature range: -25°C to 70°C
• درجه آلودگی: ۲
• درجه حفاظت: IP20

تأثیر زیست‌محیطی

Modern electrical installations increasingly consider environmental factors:

• The VF003’s long mechanical and electrical life (20,000 and 10,000 cycles respectively) reduces replacement waste
• Energy limiting class 3 certification contributes to energy-efficient installations
• Compliance with RoHS and other environmental directives ensures minimal environmental impact

Accessory Options for Enhanced Functionality

The VF003 MCB can be complemented with various accessories to extend its functionality:

1. مخاطبین کمکی: For status monitoring and integration with building management systems
2. Shunt release: Remote tripping capability for emergency shutdown
3. Under voltage release: Automatic disconnection during voltage dips
4. Alarm contacts: For remote indication of trip events

These accessories increase the versatility of the VF003, enabling integration into modern smart building systems.

Conclusion: Why the VF003 MCB is the Right Choice

The VIOX VF003 miniature circuit breaker combines superior protection capabilities with versatile configuration options, making it suitable for virtually any electrical installation requirement. With its NF certification, multiple trip curve options, and comprehensive range of current ratings, the VF003 delivers reliable, safe, and efficient circuit protection.

Whether you’re working on a simple residential installation or a complex industrial system, the VF003 MCB provides the performance, reliability, and safety features needed for today’s demanding electrical environments.

For more information about the VF003 miniature circuit breaker or to explore other VIOX electrical protection solutions, contact our technical support team or visit our website at viox.com.