VOB4-125 MCB – High Current 6kA Miniature Circuit Breaker
- ✅ High Current Ratings: 80A, 100A, 125A – ideal for main distribution and heavy loads
- ✅ Enhanced Electrical Durability: 6,000 electrical cycles (50% more than standard 4,000 cycles)
- ✅ Superior Endurance: ≥20,000 cycles for long-term reliability
- ✅ Robust Breaking Capacity: 6000A short-circuit protection
- ✅ Широкий діапазон напруги: 230V/400V~, 240V/415V~ for international applications
- ✅ All Pole Configurations: 1P, 2P, 3P, 4P available
- ✅ Type C & D Curves: Suitable for motors, transformers, and high-inrush loads
- ✅ Professional Quality: Manufactured by ISO 9001:2015 certified VIOX Electric
Надішліть свої вимоги, і ми надамо вам пропозицію протягом 12 годин
- TEL:+8618066396588
- Whatsapp:+8618066396588
- Email:[email protected]
VOB4-125 High-Current Miniature Circuit Breaker
Professional MCB for 80A-125A Heavy-Load Applications – VIOX VOB4-125 series miniature circuit breakers provide reliable high-current protection for main distribution boards, commercial buildings, and heavy-load installations. IEC 60898-1 certified with 6kA breaking capacity, enhanced 6000 electrical cycles durability, rated from 80A to 125A.
Complete Technical Specifications
| Параметр | Специфікація |
|---|---|
| Product Series | VOB4-125 |
| Номінальний струм (В) | 80A, 100A, 125A |
| Кількість поляків | 1P, 2P, 3P, 4P |
| Розривна здатність (Icn) | 6000A |
| Номінальна напруга | 230V/400V~, 240V/415V~ |
| Trip Unit Technology | Термомагнітний |
| Curve Code (Trip Characteristics) | C, D |
| Номінальна імпульсна витримувана напруга (Uimp) | 4000V |
| Механічна міцність | 10 000 циклів |
| Електрична довговічність | 6,000 cycles (enhanced) |
| Endurance | ≥20,000 cycles |
| Момент затягування | M7 3.5N·m ⚠ |
| Ступінь захисту | IP20 |
| Діапазон температур навколишнього середовища | -5°C to +40°C |
| Відповідність стандартам | IEC 60898-1 |
| Монтаж | 35mm DIN rail (IEC/EN 60715) |
VOB4-125 Key Advantages
1. High Current Capacity for Heavy Loads
The VOB4-125 series is specifically designed for high-current applications from 80A to 125A, making it perfect for:
- Main distribution boards in commercial buildings
- Heavy-load circuits in industrial facilities
- Large motor and transformer protection
- High-power HVAC systems
- Промислове кухонне обладнання
- Розподіл живлення центру обробки даних
2. Enhanced Electrical Durability – 6,000 Cycles
Unlike standard MCBs with 4,000 electrical cycles, the VOB4-125 offers 6,000 electrical cycles – a 50% increase in durability. This means:
- Longer service life in demanding applications
- Reduced maintenance and replacement costs
- Better performance in circuits with frequent load switching
- Higher reliability for critical installations
3. Superior Endurance Rating
With an endurance rating of ≥20,000 cycles, the VOB4-125 is built for the long term, providing:
- Extended operational lifespan
- Consistent performance over years of service
- Cost-effective solution for high-usage environments
4. Versatile Voltage Compatibility
Supporting both 230V/400V~ and 240V/415V~ voltage systems, the VOB4-125 is suitable for:
- International projects with different voltage standards
- Both European and Asian electrical systems
- Multi-voltage installations
Trip Curve Selection Guide
The VOB4-125 is available in Type C and Type D curves to match your specific application:
Type C Curve MCB (5-10 × In) – Recommended
Best for general commercial and light industrial applications:
- Main distribution boards with mixed loads
- Large air conditioning systems and HVAC equipment
- Розподіл електроенергії в комерційних будівлях
- Transformers and inductive loads
- Motor-driven equipment (pumps, fans, compressors)
- General power panels with moderate inrush currents
Trip Range: 5-10 times rated current
Типові застосування: Most commercial buildings, offices, retail spaces
Type D Curve MCB (10-20 × In)
Best for heavy industrial applications with high inrush currents:
- Large industrial motors and motor starters
- Heavy transformers with high magnetizing inrush
- Welding equipment and industrial machinery
- X-ray and medical imaging equipment
- Capacitive loads with high starting currents
- Industrial manufacturing equipment
Trip Range: 10-20 times rated current
Типові застосування: Industrial plants, heavy machinery, specialized equipment
Applications by Market Segment
Commercial Buildings & Offices
- Main Distribution Boards: 80A-125A feeders for sub-distribution
- Системи опалення, вентиляції та кондиціонування: Large rooftop units, chillers, central air conditioning
- Elevator & Escalator Systems: Main power protection
- Commercial Kitchen Equipment: Industrial ovens, refrigeration systems
- Retail Stores: Main incoming protection for large retail spaces
- Shopping Malls: Sub-main distribution circuits
Житлові програми
- High-Load Residential Buildings: Main incoming protection for large homes
- Multi-Unit Dwellings: Distribution boards for apartment buildings
- Luxury Homes: High-power circuits for pools, spas, home theaters
- Захист усього будинку: Main breaker for high-load residences
- Зарядка для електромобілів: High-current EV charging installations
Промислові об'єкти
- Центри управління двигунами: Protection for large industrial motors
- Manufacturing Plants: Main distribution for production lines
- Factory Power Distribution: Sub-main circuits in industrial facilities
- Важке машинобудування: Protection for high-power industrial equipment
- Технологічне обладнання: Промислова автоматизація та системи управління
Infrastructure & Utilities
- Public Buildings: Schools, hospitals, government facilities
- Transportation Hubs: Airports, train stations, bus terminals
- Telecom & Data Centers: High-current power distribution
- Water Treatment Plants: Pump and motor protection
- Municipal Buildings: Main distribution protection
Спеціалізовані програми
- Сонячні фотоелектричні системи: Main DC/AC protection circuits
- Зберігання енергії акумулятора: High-current storage system protection
- Системи аварійного живлення: Generator and UPS distribution
- Medical Facilities: Critical power distribution circuits
- Hospitality: Hotels, resorts, conference centers
VOB4-125 vs Lower-Rated MCBs
| Особливість | VOB4-63 (1A-63A) | VOB4-125 (80A-125A) |
|---|---|---|
| Поточний діапазон | 1A-63A | 80A-125A ⚡ |
| Електрична довговічність | 4,000 cycles | 6,000 cycles ✓ |
| Endurance | Не вказано | ≥20,000 cycles ✓ |
| Момент затягування | M5 2.5N·m | M7 3.5N·m (larger terminals) |
| Пропускна здатність | 6kA/10kA | 6 кА |
| Основне використання | Відгалуження ланцюгів | Main & Sub-Main Distribution |
| Typical Installation | Final circuits | Distribution boards, feeders |
Choose VOB4-125 when:
- Main distribution board protection is required (80A-125A)
- High electrical durability (6,000 cycles) is needed
- Heavy-load applications demand robust protection
- Long-term reliability (20,000+ cycles) is critical
- Feeder circuits require high-current protection
Dimensions & Installation Data
Modular Width (Standard 18mm Module):
- 1P: 1 module (17.8mm)
- 2P: 2 modules (35.6mm)
- 3P: 3 modules (53.4mm)
- 4P: 4 modules (71.2mm)
Фізичні розміри:
- Height: 89.6mm (taller than standard MCB for enhanced heat dissipation)
- Depth: 76.4mm
- Width: 71.2mm (4P), 53.4mm (3P), 35.6mm (2P), 17.8mm (1P)
Вимоги до встановлення:
- Mounting: Standard 35mm DIN rail per IEC/EN 60715
- Terminal type: Larger screw terminals for high-current capacity
- Terminal torque: M7 3.5N·m (higher than standard MCBs)
- Wire compatibility: Suitable for high-current conductors
- Ventilation: Ensure adequate spacing for heat dissipation in high-load applications
Important Installation Notes:
- Use appropriately rated conductors for 80A-125A loads
- Ensure proper torque application to prevent loose connections
- Allow adequate ventilation space around the MCB
- Consider ambient temperature derating for enclosed panels
Certifications & Quality Standards
Відповідність міжнародним стандартам
✓ IEC 60898-1: Circuit breakers for overcurrent protection in household and similar installations
✓ 6kA Breaking Capacity: Tested and certified short-circuit interruption rating
✓ IP20 Protection Degree: Suitable for standard electrical enclosures
✓ Thermal-Magnetic Trip: Proven protection technology
Manufacturing Quality
✓ ISO 9001:2015 Certified: Quality management system certified manufacturer
✓ 100% Factory Testing: Each unit electrically tested before shipment
✓ Підвищена довговічність: 6,000 electrical cycles, ≥20,000 endurance cycles
✓ Full Traceability: Batch tracking and quality documentation
✓ EU RoHS Compliant: Environmentally responsible manufacturing
Забезпечення якості
- Rigorous testing for breaking capacity verification
- Temperature rise testing for high-current applications
- Endurance testing to ≥20,000 cycles
- Continuous production quality monitoring
Installation & Selection Guide
Вибір номінального струму
How to Choose the Right Current Rating:
- Calculate Load Requirements:
- Measure actual load current
- Add safety margin (typically 125% of continuous load)
- Врахуйте потреби майбутнього розширення
- 80A Rating:
- Typical Loads: 55-64kW continuous load (400V 3-phase)
- Best For: Sub-main distribution, medium HVAC systems
- Приклад: 50kW central air conditioning system
- 100A Rating:
- Typical Loads: 69-80kW continuous load (400V 3-phase)
- Best For: Main distribution in medium commercial buildings
- Приклад: Office building main distribution board
- 125A Rating:
- Typical Loads: 86-100kW continuous load (400V 3-phase)
- Best For: Large commercial main distribution, industrial feeders
- Приклад: Shopping center main incoming breaker
Pole Configuration Selection
1-Pole (1P): Single-phase loads, 230V/240V circuits
2-Pole (2P): Single-phase loads with neutral protection, 230V/240V
3-Pole (3P): Three-phase loads without neutral, 400V/415V
4-Pole (4P): Three-phase loads with neutral protection, 400V/415V
Most Common: 3P and 4P configurations for commercial/industrial three-phase systems
Why VIOX Electric for High-Current MCBs?
Specialized High-Current Expertise
- Extensive experience in 80A-125A MCB manufacturing
- Advanced thermal management design for high-load applications
- Enhanced contact materials for superior electrical performance
- Rigorous testing protocols for high-current applications
Manufacturing Capabilities
- ISO 9001:2015 certified production facility
- Advanced automated assembly lines
- In-house testing laboratory with high-current test equipment
- Consistent quality control for every unit
Підтримка клієнтів
- Pre-Sales: Application engineering support, load calculation assistance
- Technical: Detailed specifications, CAD drawings, installation guidance
- After-Sales: Technical troubleshooting, warranty support
- Training: Product training for distributors and contractors
Supply Flexibility
- Small sample orders for testing and evaluation
- Large volume orders for projects and distributors
- Mixed configurations in single orders
- Custom labeling and packaging options
How to Order VOB4-125 MCB
Model Numbering System: VOB4-125 [Poles] [Curve] [Rating]
Ordering Examples:
- VOB4-125 3P C 100A – 3-Pole, Type C curve, 100A rated current
- VOB4-125 4P C 125A – 4-Pole, Type C curve, 125A rated current
- VOB4-125 2P D 80A – 2-Pole, Type D curve, 80A rated current
Ordering Checklist:
- ☐ Number of poles (1P, 2P, 3P, 4P)
- ☐ Trip curve type (C or D)
- ☐ Rated current (80A, 100A, or 125A)
- ☐ Quantity required
- ☐ Voltage system (230V/400V or 240V/415V)
- ☐ Project timeline and delivery requirements
Get Your Quote Today
Contact VIOX Electric – High-Current MCB Specialist
For Electrical Contractors:
- Project-specific quotations
- Технічна підтримка додатків
- Fast delivery for urgent projects
- Mixed ratings and configurations available
For Panel Builders & Distributors:
- Volume pricing tiers
- Distributor partnership programs
- Technical training and support
- Custom labeling options
For Engineers & Specifiers:
- Technical datasheets and certifications
- CAD drawings and panel layout support
- Application engineering consultation
- Sample requests for testing
Часті запитання (FAQ)
Q: What’s the difference between VOB4-125 and standard 63A MCBs?
A: VOB4-125 is designed for high-current applications (80A-125A) with enhanced electrical durability (6,000 cycles vs. 4,000) and superior endurance (≥20,000 cycles). It’s used in main distribution boards, while 63A and below are typically for branch circuits.
Q: Can I use VOB4-125 as a main breaker for a commercial building?
A: Yes, the VOB4-125 is ideal for main or sub-main distribution in commercial buildings. Choose the current rating based on your calculated load requirements plus safety margin.
Q: What wire size should I use with VOB4-125?
A: Wire sizing depends on local electrical codes and installation conditions. For 125A, typically 25mm² to 35mm² copper conductors are required. Consult local codes or our technical team for specific recommendations.
Q: Is VOB4-125 suitable for three-phase systems?
A: Yes, VOB4-125 is available in 3P and 4P configurations specifically for three-phase 400V/415V systems, commonly used in commercial and industrial installations.
Q: What’s the lead time for bulk orders?
A: Standard lead time is 2-4 weeks for volume orders. Contact our sales team for urgent requirements or large projects.
Q: Do you provide installation training?
A: Yes, we offer technical training for distributors and electrical contractors. Contact us for training schedules and materials.
Related VIOX Circuit Protection Products
VOB4-63 Series (1A-63A): Standard current MCBs for branch circuit protection
MCCB Series: Molded case circuit breakers up to 1600A for higher ratings
RCCB/RCBO: Residual current protection with earth leakage detection
ACB Series: Air circuit breakers for main distribution up to 6300A
Changeover Switches: Manual and automatic transfer switches
SPD Devices: Surge protection for sensitive equipment
[VIEW ALL CIRCUIT PROTECTION PRODUCTS →]
Download Resources
- 📄 VOB4-125 Technical Datasheet (PDF) – Complete specifications
- 📄 Installation & Wiring Guide (PDF) – Professional installation instructions
- 📄 IEC 60898-1 Compliance Certificate – Certification documentation
- 📄 CAD Drawings (DWG/DXF) – For panel layout and design
- 📄 Load Calculation Guide (PDF) – How to size high-current MCBs
- 📄 Complete VIOX MCB Product Catalog – Full product range
Product Comparison Table
| Модель | Поточний діапазон | Пропускна здатність | Electrical Cycles | Найкраща заявка |
|---|---|---|---|---|
| VOB3-63 | 1A-63A | 4.5kA/6kA | 4,000 | Branch circuits, final loads |
| VOB4-63 | 1A-63A | 6kA/10kA | 4,000 | Industrial branch circuits |
| VOB4-125 | 80A-125A | 6 кА | 6,000 | Main/sub-main distribution ⚡ |
VOB4-125 High-Current MCB is manufactured by VIOX Electric Co., Ltd., an ISO 9001:2015 certified manufacturer specializing in low-voltage electrical protection devices. With decades of experience in high-current circuit protection, VIOX Electric provides reliable solutions for commercial, industrial, and residential main distribution applications worldwide.
