VIOX VKL11F 4P liekamosios srovės grandinės pertraukiklis (RCCB)

Advanced Protection Against Modern Electrical Hazards

The VIOX VKL11F Type F Residual Current Circuit Breaker (RCCB) represents a significant advancement in electrical safety technology, specifically designed to address the unique challenges posed by modern electrical equipment. As more households and industries adopt frequency inverters and electronic controllers, traditional RCCBs face limitations that the VKL11F has been engineered to overcome.

Designed according to the stringent standards of IEC/EN 62423, IEC/EN 61008-1, and OVE E8601, the VKL11F offers superior protection against sinusoidal residual currents and pulsating DC fault currents, while also excelling in environments with mixed frequencies up to 1000 Hz.

Why Choose the VKL11F Type F RCCB?

In today’s increasingly electronic world, appliances such as washing machines, dishwashers, motor drives, air conditioners, heating systems, and various industrial equipment frequently incorporate frequency inverters. These devices generate residual currents with mixed frequencies that conventional Type A RCCBs may not adequately detect, potentially leaving your electrical systems vulnerable.

The VKL11F solves this critical safety gap with its enhanced sensitivity to alternating and pulsating DC fault currents across a broad frequency spectrum. This advanced capability ensures reliable protection even in installations where frequency inverters output variable frequencies in the range of 10 to 400 Hz.

Key Applications

• Home appliances with variable frequency drives (washing machines, dryers)
• HVAC systems and heat pumps
• Industrial equipment with motor speed control
• Lighting systems with electronic controllers
• Welding equipment
• Single-phase frequency inverter applications
• Any installation where Type A RCCBs may not provide adequate protection

Superior Technical Features

1. Enhanced Protection Capabilities

The VKL11F provides comprehensive protection against multiple types of residual currents:

• Sinusoidal AC residual currents (like Type AC RCCBs)
• Pulsating DC fault currents (like Type A RCCBs)
• Residual currents with mixed frequencies up to 1000 Hz
• Alternating residual sinusoidal currents
• Superimposed smooth DC residual currents up to 10 mA

This multi-faceted protection ensures your electrical system remains safe even when using the most modern electronic equipment.

2. Advanced Tripping Sensitivity

The VKL11F features three-tiered tripping sensitivity to provide comprehensive protection:

• 30mA – Additional protection against direct contact
• 100mA – Coordinated with the earth system (according to the formula I∆n < 50/R) to protect against indirect contacts
• 300 mA – Protection against indirect contacts and fire hazards

Each sensitivity level is precision-engineered to respond appropriately to different types of fault conditions, ensuring optimal protection while minimizing nuisance tripping.

3. High Surge Immunity

With an impressive high immunity against surge fault currents and mains voltage-driven follow-on current pulses up to 3 kA, the VKL11F significantly improves system availability by preventing unwanted trippings. The device features a high short-circuit current resistance of 10 kA and can withstand peak currents of 3 kA (8/20 μs), making it exceptionally reliable during electrical disturbances.

4. Compact and Reliable Design

Despite its advanced functionality, the VKL11F maintains a compact appearance design with excellent stability and high safety standards. Available in 2-pole or 4-pole configurations, with rated currents ranging from 16A to 100A, the VKL11F offers flexibility to meet diverse installation requirements while ensuring consistent protection.

Technical Parameters

Elektrinės specifikacijos

Mechanical Specifications

VKL11F  Dimension

Distinctive Advantages of the VKL11F Type F RCCB

1. Suitable for Single-Phase Frequency Inverters

Unlike standard RCCBs, the VKL11F is specifically designed to work effectively with single-phase frequency inverters, making it the ideal choice for modern homes and industrial settings where variable speed drives are increasingly common.

2. Enhanced Sensitivity to Mixed Frequency Residual Currents

The VKL11F responds effectively to alternating and pulsating DC fault currents of the mains frequency (Type A), while also detecting high-frequency residual currents up to 1 kHz. This broad-spectrum sensitivity ensures protection where conventional RCCBs might fail.

3. Maintenance of Essential Type A Functionality

While offering enhanced protection against mixed frequencies, the VKL11F maintains the standard functionality of Type A RCCBs with superimposed smooth DC residual currents of up to 10 mA, ensuring compatibility with existing systems.

4. Short Trip Delay Feature

A short-time delay of up to 10 ms prevents unwanted triggering by transient leakage currents, improving system reliability while maintaining safety standards.

5. Thunderstorm Proof

The VKL11F includes built-in protection against lightning-induced surges, reducing nuisance tripping during storms and enhancing overall system reliability.

6. Compact Form Factor

Despite its advanced capabilities, the VKL11F maintains a small footprint for all rated currents, making it easy to integrate into existing installations or new construction projects where space is at a premium.

The Problem with Conventional RCCBs in Modern Applications

Numerous modern appliances—including variable-speed dishwashers, washing machines, machine drills, heating and heat pumps, lighting systems, air conditioners, and welding equipment—contain frequency inverters that can generate residual currents with frequencies beyond the detection capabilities of standard Type A RCCBs.

These frequency inverters typically output variable frequencies in the range of 10 to 400 Hz. When a fault occurs, a conventional Type A RCCB may not trip properly because its detection mechanism is optimized for 50/60 Hz mains frequency. This protection gap represents a significant safety risk that the VKL11F Type F RCCB is specifically engineered to address.

Tripping Sensitivity and Time

The VKL11F features carefully calibrated tripping characteristics:

• Specially designed for sinusoidal AC residual currents, pulsed DC residual currents, alternating residual sinusoidal currents, and superimposed smooth DC residual currents up to 10 mA
• Maintains standard functionality with superimposed smooth DC residual currents up to 10 mA
• Features a short time delay to prevent unwanted triggering
• Detectable waveforms include alternate current, pulsating current with DC components, and variable frequency residual currents

Compliance with International Standards

The VKL11F Type F RCCB is designed and manufactured in accordance with the following international standards:

• IEC/EN 62423 – Type F and Type B residual current operated circuit-breakers with and without integral overcurrent protection
• IEC/EN 61008-1 – Residual current operated circuit-breakers without integral overcurrent protection
• OVE E8601 – Austrian standard for electrical installations

These certifications (UKA, CE) ensure that the VKL11F meets the highest safety and quality standards for electrical protection devices.

Dimensional Specifications

The VKL11F is available in both 2-pole and 4-pole configurations to suit various installation requirements:

• 2-pole dimensions: Width 35.8 mm x Height 81.5 mm x Depth 74 mm
• 4-pole dimensions: Width 70.2 mm x Height 81.5 mm x Depth 74 mm

This compact design allows for efficient use of space within distribution boards while maintaining easy installation and accessibility.

Why the VKL11F Type F Is Superior to Standard RCCBs

The VIOX VKL11F Type F RCCB stands out among residual current protection devices due to its specialized design for modern electrical systems:

1. Advanced Frequency Detection: Unlike Type A RCCBs, the VKL11F can detect fault currents across a wide frequency spectrum up to 1000 Hz, addressing the limitations of conventional devices in modern applications.
2. Reduced Nuisance Tripping: With high immunity against surge fault currents and a short-time delay feature, the VKL11F minimizes unwanted tripping while maintaining essential safety protection.
3. Versatile Application Range: Suitable for both residential and industrial environments where frequency inverters and electronic controllers are increasingly common.
4. Compliant with Latest Standards: Designed according to the most current international safety standards, ensuring reliable performance and regulatory compliance.
5. Enhanced Durability: With 2000 electrical operating cycles and 4000 mechanical operating cycles, the VKL11F offers exceptional longevity even in demanding environments.

Conclusion: The Future of Residual Current Protection

As electrical systems continue to evolve with increasing use of frequency inverters and electronic controllers, the need for advanced residual current protection becomes more critical. The VIOX VKL11F Type F RCCB represents the next generation of safety technology, addressing the limitations of conventional devices while providing enhanced protection against a wider range of fault conditions.

Whether for residential, commercial, or industrial applications, the VKL11F offers peace of mind through its superior detection capabilities, robust construction, and compliance with the most stringent international standards. By choosing the VKL11F, you’re investing in cutting-edge protection technology that will keep your electrical systems safe now and into the future.

Contact our technical team today to learn more about how the VKL11F Type F RCCB can enhance the safety and reliability of your electrical installations.