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Address: Liuhuang Road, Liushi Town, Yueqing City, Zhejiang Province
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RCBO | Residual Current Circuit Breaker
with Overcurrent Protection
VRL22B Residual Current Operated Circuit Breaker with Overcurrent Protection RCBO Type B and Type B+
1.1 Function
VRL22B RCBO type B and VRL22B+ RCBO type B+ are appearance design, compact structure, good reliability, and high safety. They are universal residual current circuit breaker with Overcurrent protection(RCBO).
Rated current up to 63A and for purposes of residual current protection, overcurrent (overload) and short circuit protection. When any personal electric shock occurs or the circuit leakage current exceeds the predetermined value, the RCBO can automatically cut off the power supply in a very short period of time, so that the safety of persons and electrical equipment can be operated.
Residual current circuit breaker with Overcurrent protection(RCBO) 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 with Overcurrent protection(RCBO) 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)
Tripping Curve B & C
1.3 Approvals and certificates
2.1 Basic parameters
| Type | B | B+ | ||
| Electrical | ||||
| Design according to | IEC/EN 62423, IEC/EN 61009-1, OVE E8601 | |||
| VDE 0664-400 | ||||
| Current test marks as printed onto the device | ||||
| Rated voltage Un | 2P: 230/240V AC 4P: 400/415V AC | |||
| Rated frequency fn | 50/60Hz | |||
| Mode of operation | "A type functionality: voltage independent B and B+ type functionality: voltage dependent" | |||
| Operation voltage electronic | 50 – 264V AC | |||
| Voltage range test circuit | 2P: 184 – 264V AC 4P: 184 – 440V AC | |||
| Rated current In | 6A,10A,13A,16A, 20A,25A, 32A, 40A, 63A | |||
Rated residual operating current I△n | Instantaneous | 30mA, 100mA, 300mA, 500mA | 30mA, 100mA, 300mA | |
| K-short time delayed (G, ASi) | 30mA, 100mA, 300mA, 500mA | 30mA, 100mA, 300mA | ||
| S- selective | 100mA, 300mA, 500mA | 100mA, 300mA | ||
| Sensitivity | Alternating, pulsed and smooth direct currents | |||
| High frequency up to 1 kHZ | High frequency up to 20kHZ | |||
| Tripping Curve | B: (3-5)In, C: (5-10)In | |||
| Rated insulation voltage Ui | 500 V | |||
| Rated impulse withstand voltage Uimp | 4 kV (1.2/50μs) | |||
| Rated conditional short-circuit current Inc | 6KA,10 kA | |||
| Rated making and breaking capacity Im | 3000 A | |||
| Peak withstand current | 3 kA (8/20 μs) surge current proof 5 kA (8/20 μs) surge current proof for type S | |||
| Electrical isolation | > 4 mm contact space | |||
Endurance (operating cycles) | electrical components | ≥ 2000 | ||
| mechanical components | ≥ 4000 | |||
| Mechanical | ||||
| Degree of protection | IP20 | |||
| Upper and lower terminals | open mounted / lift terminals | |||
| Terminal capacity | 1 - 25 mm2 | |||
| Terminal torque | 2 - 2.5 Nm | |||
| Busbar thickness | 0.8 - 2 mm | |||
| Operating temperature | -25°C ... +55°C | |||
| Storage- and transport temperature | -40°C ... +70°C | |||
| Resistance to climatic conditions | IEC/EN 61009 | |||
| Contact position indicator | mechanical red / green | |||
| Supply possibility | top or bottom | |||
| Mounting position | any | |||
2.2 The residual current breaking times
| In (A) | I△n (A) | Breaking time when the residual current assumes the following values (s) | ||||
| I△n | 2I△n | 5I△n | 5A, 10A, 20A, 50A, 100A, 200A, 500A(a) | I△t(b) | ||
| 6~63 | 0.01, 0.03, 0.1, 0.3, 0.5 | 0.1 | 0.05 | 0.04 | 0.04 | 0.04 |
a. For tests of 5A, 10A, 20A, 50A, 100A, 200A and 500A, the current values beyond the lower limit of over-current instantaneous tripping are not tested. B. Tests are done when I△t is equal to the lower limit current of over-current instantaneous tripping of type B and type C. | ||||||
2.3 The over-current protection characteristics
| No. | Rated current In (A) | Initial state | Test current (A) | Specified time (t) | Expected result | Remarks |
| a | 6 ~ 63 | Cold state | 1.13 In | t ≥ 1h | Non-tripping | |
| b | Immediately after sequence a | 1.45 In | t < 1h | Tripping | Increase to the specified current within 5s after test item a. | |
| c | Cold state | 2.55 In | 1s < t < 60s | Tripping | ||
| d | Cold state | 3 In | t ≥ 0.1s | Non-tripping | Curve B | |
| 5 In | t < 0.1s | Tripping | ||||
| 5 In | t ≥ 0.1s | Non-tripping | Curve C | |||
| 10 In | t < 0.1s | Tripping |
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
RCBO Type B is a Residual Current Operated Circuit Breaker, designed to protect people from electrical shock and provide over current protection against short circuit and overload. It consists of a Residual Current Device (RCD) and a miniature circuit breaker, providing protection against both overload and short circuit, as well as against direct and indirect contact with live parts. The RCBO Type B is rated for a Residual Non-Operating Current of 0.005A, 0.015A, 0.05A, 0.15A, Residual Making and Breaking Capacity of 500A, and Rated Voltage of AC240V. It is classified by Type of Instantaneous Tripping of Type B: (3 ~ 5) In, Type C: (5 ~ 10) In.
HAROK RCBO Type B is a type of Residual Current Operated Circuit Breaker (RCBO) designed to provide protection from electric shock, fire, and other hazards. It is available in a variety of sizes and frame sizes ranging from 1P-4P, with rated residual operating currents from 0.01A to 0.3A and rated residual non-operating currents from 0.005A to 0.15A. The connection options for these circuit breakers are from top and bottom or from bottom and top, and they can be used with AC240V. The rated current Inm for the frame size is 50A.
This product is well-suited for a number of applications and scenarios, such as providing safety in industrial and commercial buildings, protecting electrical equipment and wiring from overloading, and providing protection against electric shock. It is also suitable for providing protection from fire and other hazardous events. This product is designed to be reliable and easy to install, and it is a great choice for those looking for a top-notch RCBO Type B.
| Parameter | Value |
|---|---|
| Connection | From Top And Bottom, From Bottom And Top |
| Rated Voltage | AC240V |
| Standard | IEC/EN 61009-1, AS/NZS 61009.1 |
| Type | Type B |
| Electrical Life | 2000 |
| Rated Current | 6A 10A 16A 20A 25A 32A 40A 50A |
| Rated residual making and breaking capacity I△m | 500A |
| Mechanical Life | 2000 |
| Rated Residual Operating Current | 0.01A, 0.03A, 0.1A, 0.3A |
| Poles | 1P+N |
HAROK RCBO Type B is a reliable and safe solution for the protection of your electrical circuits. It is designed with the latest IEC/EN 61009-1 and AS/NZS 61009.1 standards. Our RCBO Type B is equipped with a rated residual making and breaking capacity of 500A and an electrical life of 2000.
This RCBO Circuit Breaker has various models available, including VRL22 2P,4P VRL11 VAL003 VKL003 VDL006 VRL01 VRL02 VRL03 VK007LE 1P-4P, so you can choose the one that best suits your needs. All models of our RCBO Type B are designed with poles of 1P+N and are made in China with the highest quality materials.
We provide technical support and services for RCBO Type B. Our technical support team is available to answer any questions you may have regarding installation, troubleshooting, and maintenance of RCBO Type B. We also offer on-site installation services and can provide post-installation assistance if needed. In addition, our team of experts can provide advice and guidance on how to get the most out of your RCBO Type B. We strive to provide the highest level of customer service to ensure you have the best experience possible with your RCBO Type B.
Packaging and Shipping of RCBO Type B:
RCBO Type B is packaged in a strong box, with each individual unit being bubble-wrapped for extra protection. Shipping is done through a reputable courier service, with tracking information provided for each shipment.
