Updated:29 September 2026
Rank 1-19 of the best RCD Type B
Our recommendation Price Customer rating
1. Comparison winner
DIHOOL RCD Type B 4-Pole Circuit Breaker, 40A, 30mA, DC 6mA, EV Charger
DIHOOL RCD Type B 4-Pole Circuit Breaker, 40A, 30mA, DC 6mA, EV Charger
Available immediately
free shipping
  • nominal current 40A or 63A for a four‑pole device
  • rated electrical characteristics include AC 415V at 50 Hz for three‑phase with neutral
  • mounting on a 35 mm DIN rail TS/TSH; phase rails can be used; distribution boxes and accessories available separately
Our rating
9,8
very good
2. Best value
63A Type B RCCB, DIN Rail, AC/DC Protection
63A Type B RCCB, DIN Rail, AC/DC Protection
Available immediately
free shipping
  • 63A rated current for handling heavy electrical loads
  • 6KA fault current interrupting capacity for effective safety
  • suitable for installation with electric vehicle charging stations
Our rating
9,8
very good
3. Bestseller
DIHOOL RCD Type B 4-Pole DIN Rail 63A 300mA
DIHOOL RCD Type B 4-Pole DIN Rail 63A 300mA
Available immediately
free shipping
  • Nominal current is available as 16A, 40A or 63A and in 2-pole or 4-pole configurations
  • Switching capacity rated for AC 415V at 50Hz with 3P+N connection
  • Mounting method on a 35 mm DIN rail TS/TSH; phase rails can be used
Our rating
9,8
very good
DIHOOL RCD Type B Residual Current Circuit Breaker DIN Rail 4-Pole 40A 30mA
DIHOOL RCD Type B Residual Current Circuit Breaker DIN Rail 4-Pole 40A 30mA
Available immediately
free shipping
  • nominal current options are 16 A, 40 A or 63 A in both 2-pole and 4-pole configurations
  • CE certification confirms conformity with EU safety standards
  • mounting method is on a 35 mm DIN rail (TS/TSH 35 mm) with compatibility for phase rails and distribution accessories sold separately
Our rating
9,6
very good
Type B RCBO 63A 30 mA, 2P RCCB Circuit Breaker, 6 kA Breaking Capacity, for EV Charger Protection
Type B RCBO 63A 30 mA, 2P RCCB Circuit Breaker, 6 kA Breaking Capacity, for EV Charger Protection
Available immediately
free shipping
  • 63A nominal current rating meaning it can carry up to 63 amperes of current
  • 6 kA breaking capacity meaning it can interrupt fault currents up to 6 kiloamperes
  • RCD function with 30 mA sensitivity providing leakage protection by detecting ground faults and tripping promptly
Our rating
9,6
very good
No reviews yet
TONGOU Type B RCD Circuit Breaker 63A 2P
TONGOU Type B RCD Circuit Breaker 63A 2P
Available immediately
free shipping
  • rated current of 63 amps
  • short-circuit breaking capacity of 10 kiloamps
  • suitable for surface or flush mounting
Our rating
9,6
very good
Type B RCD Circuit Breaker 2P 63A 30mA DC Leakage Protection 6kA Residual Current Device for EV Charging
Type B RCD Circuit Breaker 2P 63A 30mA DC Leakage Protection 6kA Residual Current Device for EV Charging
Available immediately
free shipping
  • 63 A nominal current indicating the maximum continuous current the device protects
  • 6 kA breaking capacity meaning it can interrupt fault currents up to 6 kiloamps
  • DIN rail mounting allows quick and secure installation
Our rating
9,6
very good
No reviews yet
Type B Circuit Breaker RCD 2P 63A 30mA
Type B Circuit Breaker RCD 2P 63A 30mA
Available immediately
free shipping
  • 63A rated current for handling heavy electrical loads
  • breaking capacity of 6KA for effective interruption of fault currents
  • suitable for installation in electric vehicle charging stations
Our rating
9,6
very good
Hager CDB663E Type B RCD
Hager CDB663E Type B RCD
Available immediately
free shipping
  • rated current: 63 amperes
  • short-circuit resistance: 10kA
  • mounting method: DIN Rail
Our rating
9,5
very good
No reviews yet
YJDOORPLAY Type B RCD Circuit Breaker, 4P-40A-30mA, DIN rail mounting
YJDOORPLAY Type B RCD Circuit Breaker, 4P-40A-30mA, DIN rail mounting
Available immediately
free shipping
  • nominal current is 40 amps or 63 amps with 30 milliamps residual current sensitivity
  • delayed release mechanism provides reliable operation in harsh environments
  • mounting method is four pole configuration for space saving installation
Our rating
9,5
very good
No reviews yet
4P Type B RCD Circuit Breaker 40A-30mA (4P-40A-30mA)
4P Type B RCD Circuit Breaker 40A-30mA (4P-40A-30mA)
Available immediately
free shipping
  • Rated current options of 40A and 63A with a residual current sensitivity of 30mA
  • Delayed release mechanism to ensure reliable performance in harsh conditions
  • Complies with DIN VDE 0664 standards for phase sockets
Our rating
9,5
very good
No reviews yet
CWOQOCW 2P 63A Circuit Breaker
CWOQOCW 2P 63A Circuit Breaker
Available immediately
free shipping
  • 63A 30mA rated for handling heavy electrical loads with reliable fault detection
  • 6KA breaking capacity for effective interruption of fault currents
  • suitable for installation in electric vehicle charging stations for reliable protection
Our rating
9,5
very good
No reviews yet
Reliable Type B RCD Circuit Breaker 2P 63A 30MA
Reliable Type B RCD Circuit Breaker 2P 63A 30MA
Available immediately
free shipping
  • current rating of 63A and 30mA sensitivity for handling heavy electrical loads and precise fault detection
  • breaking capacity of 6KA for effective interruption of fault currents
  • suitable for installation in electric vehicle charging stations
Our rating
9,3
good
ZMdooreasy Type B 2P Circuit Breaker 63A 30 mA RCD with 6 kA Interrupting Capacity for EV Charger Ground Fault Protection
ZMdooreasy Type B 2P Circuit Breaker 63A 30 mA RCD with 6 kA Interrupting Capacity for EV Charger Ground Fault Protection
Available immediately
free shipping
  • 63 amperes nominal current to support heavy electrical loads
  • 6 kiloamperes breaking capacity to safely interrupt fault currents and protect the electrical system and connected devices
  • RCCB/RCD protection function detects leakage currents and interrupts the circuit to improve safety
Our rating
9,3
good
No reviews yet
Hager MTN132 Miniature Circuit Breaker, Type B, 6 kA, 32 A
Hager MTN132 Miniature Circuit Breaker, Type B, 6 kA, 32 A
Available immediately
free shipping
  • rated current: 32 amperes
  • breaking capacity: 6 kiloamperes
  • operating temperature: standard range for type B MCBs
Our rating
9,1
good
100+ purchases last month
Hager CDA263U 63A RCD 2-Pole 30mA
Hager CDA263U 63A RCD 2-Pole 30mA
Available immediately
free shipping
  • 63 ampere rated current for electrical flow
  • 30 mA earth leakage protection for safety
  • DIN rail mountable for easy installation
Our rating
9,1
good
4P Type B RCD Circuit Breaker 63A 30mA (4P-63A-30mA) for Three-Phase Networks and Construction Site Power Supplies
4P Type B RCD Circuit Breaker 63A 30mA (4P-63A-30mA) for Three-Phase Networks and Construction Site Power Supplies
Available immediately
free shipping
  • nominal current options 40 amps and 63 amps with a residual current sensitivity of 30 milliamps
  • 4-pole configuration for installation in distribution boards
  • flame-retardant casing provides enhanced protection for safety
Our rating
9,0
good
No reviews yet
Type B RCD Circuit Breaker, 4-Pin DIN Rail Mount, 40A/63A, 30mA (4P-63A-30mA) for EV Charging Stations
Type B RCD Circuit Breaker, 4-Pin DIN Rail Mount, 40A/63A, 30mA (4P-63A-30mA) for EV Charging Stations
Available immediately
free shipping
  • Nominal current ratings of 40 amperes and 63 amperes with a residual current sensitivity of 30 milliamps
  • Protection against residual currents including smooth DC currents to suit industrial installations and three-phase sockets
  • Easy to use across different current types (AC, pulsating and smooth DC) and compatible with switching power supplies, frequency converters and cranes
Our rating
8,9
good
No reviews yet
BG 32 AMP Type B RCBO CURB32
BG 32 AMP Type B RCBO CURB32
Available immediately
free shipping
  • 32 amp rated current
  • 6 kA breaking capacity
Our rating
8,6
good

Similar RCD Type B comparisons

RCD Type B buying guide: How to choose the right product from the above RCD Type B test or comparison

Understanding RCD Type B: What Is It and How It Works

What Is RCD Type B?

RCD Type B, or Residual Current Device Type B, is a safety device designed to protect against electrical shocks and faults in electrical circuits. It monitors the flow of electricity and can detect earth faults where the current might stray into the ground, a situation that can be dangerous. Unlike standard RCDs that only measure alternating current (AC), RCD Type B can also detect direct current (DC) leakage, ensuring maximum safety, particularly in solar power systems and charging points for electric vehicles.

How Does RCD Type B Work?

The operation of an RCD Type B is quite straightforward. It continuously compares the current entering a circuit with the current returning. If there is a difference – for instance, if a person touches a live wire and diverts some electricity to the ground – the device detects this imbalance and instantly cuts the power. This rapid response can prevent severe injuries or fatalities, making RCD Type B a vital component in safe electrical installations.

Benefits of Using RCD Type B: Why You Should Consider It

Enhanced Safety in Your Home

By installing an RCD Type B, your home benefits from enhanced protection against electrical hazards. Whether you’re using appliances, chargers, or garden equipment, the ability to detect both AC and DC faults means you’re significantly reducing the risk of electric shock, electrocution, or fire. This is particularly important for homes equipped with renewable energy sources or electric vehicle charging setups.

Versatility for Modern Applications

RCD Type B devices are particularly reliable in today’s tech-savvy environment, where many modern gadgets rely on complex electrical systems. From solar panels to EV chargers, incorporating this type of RCD ensures that these installations operate safely and efficiently, adapting well to varying current types. If you’re investing in green technology, an RCD Type B is essential.

Choosing the Right RCD Type B: Key Factors to Remember

Assessing Your Electrical Needs

When selecting an RCD Type B, it’s important to consider your specific electrical needs. Look at your main electrical system’s specifications, including the types of appliances you use and their power ratings. A thorough assessment can guide you to an RCD with the proper current rating and trip sensitivity that meets your requirements.

Compatibility with Existing Systems

Ensuring compatibility with your current electrical system is crucial. Before purchasing, checking with an electrician can guarantee that the chosen RCD will integrate smoothly with existing circuits while maximizing safety. The right RCD Type B should work seamlessly with your home’s electrical layout.

Installation Tips for RCD Type B: Getting It Right On Your Own

Safety First

Before you start the installation process, ensuring safety is paramount. Always switch off the main power supply to prevent any accidental shock. Using proper tools and wearing safety gear can make the process much safer and more manageable.

Follow Manufacturer Guidelines

Each RCD Type B comes with specific installation instructions which should be followed carefully. These guidelines usually cover wiring connections and required testing protocols to ensure functionality. If you feel uncertain at any point, don’t hesitate to consult a professional electrician to double-check your work.

Maintaining Your RCD Type B: Ensuring Long-Lasting Protection

Regular Testing

To maintain the effectiveness of your RCD Type B, regular testing is essential. Most RCDs come with a built-in test button that allows you to check the functionality easily. It’s advisable to test your device at least once every six months to ensure it operates correctly and can respond effectively in case of an emergency.

Keep It Clean and Accessible

Ensuring that the area around your RCD Type B is clean and free from obstructions can enhance its longevity. Keeping it accessible also allows for easy testing and maintenance. If you notice any signs of damage or wear, it’s important to address these issues promptly by consulting a professional.

Table of contents
  1. Understanding RCD Type B: What Is It and How It Works
  2. Benefits of Using RCD Type B: Why You Should Consider It
  3. Choosing the Right RCD Type B: Key Factors to Remember
  4. Installation Tips for RCD Type B: Getting It Right On Your Own
  5. Maintaining Your RCD Type B: Ensuring Long-Lasting Protection

Overview

1. Comparison winner
DIHOOL RCD Type B 4-Pole Circuit Breaker, 40A, 30mA, DC 6mA, EV Charger
Our rating
9,8
very good
DIHOOL RCD Type B 4-Pole Circuit Breaker, 40A, 30mA, DC 6mA, EV ChargerAvailable immediately
2. Best value
63A Type B RCCB, DIN Rail, AC/DC Protection
Our rating
9,8
very good
63A Type B RCCB, DIN Rail, AC/DC ProtectionAvailable immediately
3. Bestseller
DIHOOL RCD Type B 4-Pole DIN Rail 63A 300mA
Our rating
9,8
very good
DIHOOL RCD Type B 4-Pole DIN Rail 63A 300mAAvailable immediately
DIHOOL RCD Type B Residual Current Circuit Breaker DIN Rail 4-Pole 40A 30mA
Our rating
9,6
very good
DIHOOL RCD Type B Residual Current Circuit Breaker DIN Rail 4-Pole 40A 30mAAvailable immediately
Type B RCBO 63A 30 mA, 2P RCCB Circuit Breaker, 6 kA Breaking Capacity, for EV Charger Protection
Our rating
9,6
very good
No reviews yet
Type B RCBO 63A 30 mA, 2P RCCB Circuit Breaker, 6 kA Breaking Capacity, for EV Charger ProtectionAvailable immediately
TONGOU Type B RCD Circuit Breaker 63A 2P
Our rating
9,6
very good
TONGOU Type B RCD Circuit Breaker 63A 2PAvailable immediately
Type B RCD Circuit Breaker 2P 63A 30mA DC Leakage Protection 6kA Residual Current Device for EV Charging
Our rating
9,6
very good
No reviews yet
Type B RCD Circuit Breaker 2P 63A 30mA DC Leakage Protection 6kA Residual Current Device for EV ChargingAvailable immediately
Type B Circuit Breaker RCD 2P 63A 30mA
Our rating
9,6
very good
Type B Circuit Breaker RCD 2P 63A 30mAAvailable immediately
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