RCCB

JCRB2-100 Type B RCDs

JCRB2-100 Type B RCDs provide protection against residual fault currents / earth leakage in AC supply applications with specific waveform characteristics.

Type B RCDs are used where smooth and/or pulsating DC residual currents can occur, non-sinusoidal waveforms are present or frequencies greater that 50Hz; for example, Electric

Vehicle Charging, certain 1-phase devices, micro generation or SSEGs (Small Scale Electricity Generators) such as solar panels and wind generators.

Product Details

Introduction

Type B RCDs (Residual Current Devices) are a type of device used for electrical safety. They are designed to provide protection against both AC and DC faults, making them suitable for a wide range of applications, including those involving DC sensitive loads such as electric vehicles, renewable energy systems, and industrial machinery. Type B RCDs are essential for providing comprehensive protection in modern electrical installations.

Type B RCDs provide a level of safety beyond what conventional RCDs can provide. Type A RCDs are designed to trip in the event of an AC fault, while Type B RCDs can also detect DC residual current, making them suitable for growing electrical applications. This is particularly important as demand for renewable energy systems and electric vehicles continues to grow, creating new challenges and requirements for electrical safety.

One of the main advantages of Type B RCDs is their ability to provide protection in the presence of DC sensitive loads. For example, electric vehicles rely on direct current for propulsion, so appropriate levels of protection must be in place to ensure the safety of the vehicle and charging infrastructure. Likewise, renewable energy systems (such as solar panels) often operate on DC power, making Type B RCDs an important component in these installations.

The most important features

DIN rail mounted

2-Pole / Single Phase

RCD Type B

Tripping Sensitivity: 30mA

Current rating: 63A

Voltage rating: 230V AC

Short-circuit current capacity: 10kA

IP20 (needs to be in suitable enclosure for outdoor use)

In accordance with IEC/EN 62423 & IEC/EN 61008-1

Product Description

Standard	IEC 60898-1, IEC60947-2
Rated current	63A
Voltage	230 / 400VAC ~ 240 / 415VAC
CE-marked	Yes
Number of poles	4P
Class	B
IΔm	630A
Protection class	IP20
Mechanical life	2000 connections
Electrical life	2000 connections
Operating temperature	-25… + 40˚C with an ambient temperature of 35˚C
Type Description	B-Class (Type B) Standard protection
Fits (among others)

What is a Type B RCD?

Type B RCD is not the same as Type B MCB or RCBO, although the terminology is similar and may cause confusion. It is worth noting that the Type B designation refers to the thermal properties in MCB/RCBO and the magnetic properties in RCCB/RCD. This distinction is crucial to avoid misunderstandings, especially when encountering products such as RCBOs with dual characteristics, comparing the magnetic element of the RCBO to the thermal element (which may be an AC or A type magnetic element and a B or C type Thermal RCBO) combined.

How do Type B RCDs work?

Type B RCDs usually contain two residual current detection systems to ensure comprehensive protection. The first system used “fluxgate” technology to enable the RCD to detect smooth DC current. The second system uses technology similar to Type AC and Type A RCDs to provide voltage-independent detection. This dual approach enables Type B RCDs to effectively identify and respond to a wide range of fault currents, both AC and DC, making them suitable for a variety of applications where such currents may be present.