VKL11 Residual Current Device(RCD) TYPE B VDE KEMA NF

• General

1.1 Function

VKL11B Residual Current Device(RCD) and VKL11B+ Residual Current Device(RCD) is appearance design, compact structure, good reliability, and high safety. They are universal residual current circuit breaker.

Residual current circuit breaker type B are suitable for domestic as well as industrial applications, where are used frequency inverters, PV plant, EV chargers and similar elements. B type provides a sensitivity to residual AC, pulsating and smooth DC current, together with high frequencies up to 1 kHz.

Residual current circuit breaker type B+ meet full type B feature , with additional tripping values are defined up to 20KHZ and they are below 420mA.

They are based on electronic technology, which brings advantages of more accurate measuring of residual current and, as a consequence, reduction of unwanted tripping. These devices also do not suffer with magnetization of the tripping unit.

1.2 Selection

Detectable wave form

Type B

Tripping is ensured for sinusoidal AC residual currents pulsed DC residual currents, alternating residual sinusoidal currents up to 1000Hz, pulsating direct residual currents and for smooth direct residual currents, whether applied suddenly or increasing slowly.

Type B+

Meet full type B feature , with additional tripping values are defined up to 20KHZ and they are below 420mA

Tripping sensitivity

30mA - additional protection against direct contact.

100mA - co-ordinated with the earth system according to the formula IΔn＜50/R, to provide

protection against indirect contacts;

300mA - protection against indirect contacts, as well as fire hazard.

Tripping time

Instantaneous It ensures instantaneous tripping(without time-delay).

Short time delay

Selective (time delay)

1.3 Approvals and certificates

• Technical parameters

Special features regarding the use of SIQUENCE universal current-sensitive residual current circuit breaker (Type B and Type B+)

Applications

3.1 Typical applications that are vulnerable to smooth DC residual currents:

- Frequency converters with a three-phase connection

- Medical equipment such as X-ray equipment or CT machines

- Photovoltaic or UPS systems

- Connection points (wall boxes, charging stations) for electric vehicles

- Elevator controllers

- Pipeline trace heating

- Test setups in laboratories

- Construction sites in accordance with BGI 608 information leaflet (Electronic equipment on construction sites)

- Charging stations for battery-powered forklift trucks

- Cranes of all kinds

- Mixing plants if relevant loads are connected

- Variable-speed machine tools, such as milling and grinding machines or lathes

Wiring diagrams

Tripping characteristics

B type

Dimensions (mm)

 


YUEQING VORAX ELECTRIC CO., LTD (hereinafter referred to as "VORAX"), founded in 2003, has established itself as a prominent player in the low voltage electrics industry in China. With a prime location in Liushi Town, Yueqing city, Zhejiang Province, VORAX benefits from being situated in one of the country's key manufacturing hubs.

Recognized for its dedication to providing professional solutions in the low voltage electric and smart electricity sectors, VORAX focuses on meeting the diverse needs of its customers. The company offers an extensive range of products, including terminal distribution electrical appliances, industrial distribution electrical appliances, and industrial control electrical appliances, ensuring that every aspect of the low voltage electrics field is covered comprehensively.

VORAX boasts a product portfolio that encompasses various essential items, catering to both residential and industrial clients. Among their main offerings are Residual Current Circuit Breakers (RCCB), Residual Current Circuit Breaker with Overload Protection (RCBO), Miniature Circuit Breakers (MCB), Molded Case Circuit Breakers (MCCB), Consumer Units, and Pilot Lamps. These products exemplify the cutting-edge technology and reliability that VORAX consistently delivers.

RCCBs play a vital role in electrical safety by providing protection against electrical shocks and fire hazards. They detect any imbalance in the current between the live and neutral wires and promptly interrupt the circuit, safeguarding individuals and properties from potential harm.

RCBOs, on the other hand, go a step further by combining the functionality of RCCBs with overload protection capabilities. This integrated design enables the immediate detection and isolation of electrical faults such as overcurrent and short circuits, enhancing overall electrical system security.

MCBs are widely used in domestic and commercial applications due to their compact size and reliable performance. These circuit breakers provide short circuit and overload protection, ensuring the smooth and uninterrupted flow of electricity.

MCCBs are preferred in industrial settings for their ability to handle higher currents and withstand heavy loads. These robust and durable circuit breakers offer reliable protection against dangerous electrical faults, helping to prevent damage to machinery and ensuring the safety of workers.

Recognizing the unique needs of consumers, VORAX also manufactures custom-built Consumer Units, allowing for efficient and organized power distribution within residential and commercial buildings. These units serve as the central hub for electrical distribution, ensuring optimum utilization of power while maintaining utmost safety.

Completing their comprehensive product range, VORAX offers high-quality Pilot Lamps that provide clear indication and visual feedback regarding power status, equipment operation, and faults. These lamps play a crucial role in simplifying diagnostics and troubleshooting, streamlining operations, and enhancing user convenience.

VORAX operates with a strong commitment to innovation, continuous improvement, and customer satisfaction. By staying at the forefront of technological advancements and adhering to stringent quality standards, the company has gained a reputation for excellence within the industry.

With a dedicated team of skilled professionals, VORAX delivers exceptional service and technical support to its valued customers. Through its extensive network, the company reaches customers not only domestically but also internationally, catering to a global clientele.

As the demand for low voltage electrics continues to rise, VORAX remains at the forefront, consistently striving to meet and exceed customer expectations. The company's unwavering dedication, extensive product range, and commitment to quality make it a trusted partner for both residential and industrial electrical solutions.

HONOR:

One of few Chinese companies with UL certification for US since 2007.

One of two Chinese companies who have NF certification for France.

The only Chinese company who have ISI certificate for India.