Residual current devices (RCDs)

Ultimate protection of people and equipment

People Protection with ABB RCDs

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When it comes to electrical hazards, prevention depends on reliability and safety of the electric power distribution.

An accurate protection of people and electrical equipment against leakage currents can be achieved by installing Residual Current Devices (RCDs) which detect an imbalance of the electrical flow and trip assuring indeed protection against earth fault, reducing the risk of death or serious injury and preventing the risk of fire caused by faulty wiring or other appliances.  

ABB offers a comprehensive range of devices like RCCBs, RCBOs, RCD-blocks, Earth Leakage Relays in order to cope with all the applications in residential, commercial and industrial segments.

People Protection with ABB RCDs

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Highlights

Fast installation

Quick and easy wiring operation with cable and busbars

International standards

Availability of international approvals for each range

Wide range

Comprehensive range from residential to industrial applications

Flexibility

Combination options with System pro M compact® accessories

 

Product range



Residual Current Circuit breakers - RCCBs

The Residual Current Circuit breaker RCCBs are the safest device to detect and trip against electrical leakage currents, thus ensuring protection against electric shock caused by indirect contacts. These devices must be used in series with an MCB or fuse which protects them from the potentially damaging thermal and dynamic stresses of any over currents. They also act as the main disconnecting switches upstream of any derived MCBs (i.e. domestic consumer unit).
F200

AC, A, A-APR, A-S, F type available.
F200 B-Type

B-Type RCDs recognize a continuous fault current with a low-level ripple and are recommended for use with drives and inverters.
F-ATI & F-ARI

RCCBs equipped with automatic test features to check the proper functioning of the contacts every six months to ensure the device is able to trip in case of a leakage to earth.

Residual Current circuit Breakers with Overcurrent protection - RCBOs

RCBOs combine, in a single device, the protection against leakage current to ground typical of RCCBs with the protection against over currents (overload and short-circuit) typical of MCBs.

RCBOs are a compact solution for the protection of people and connected equipment.

RCBOs Voltage Independent (VI) or Electromechanical

DS301C

Compact electromechanical RCBOs in only 1 module width for 1P+N applications
DS201

Compact electromechanical RCBOs in two module widths for 1P+N applications
DS202CR

Compact electromechanical RCBOs in two module widths for 2P applications
DS203NC

Compact electromechanical RCBOs in four module widths for 3P+N or 3P applications
DS202 - DS203 - DS204

Factory assembled RCBOs with the combination of DDA200 block and S200 MCB
DS800 range

Factory assembled RCBOs with the combination of DDA800 blocks and S800 MCBs

RCBOs Voltage Dependent (VD) or Electronic

DSE201

Electronic 1P+N RCBOs in 1 module, with neutral and functional earth cables, for installation in chassis distribution board. Neutral unswitched.
DSE201 NS
DSE201NS

Electronic 1P+N RCBOs in 1 module and 86mm height. With neutral cable, for installation in chassis distribution board. Neutral switched.

DSN201E
DSN201E

Electronic 1P+N RCBOs in 1 module and 86mm height, suitable for DIN-Rail installation. Neutral switched.

DSE203 variants

Electronic RCBOs for three-phases application in 3 or 4 modules, for installation in chassis distribution board.

Residual Current Devices blocks - RCD blocks

RCD blocks are residual current devices suitable for assembly with a standard MCB. The residual current operated circuit-breaker obtained in this way maintains both the electrical characteristics of the MCB and those of the RCD block.
DDA200

AC, A, A-APR,A-S,F type available.​ A-AE type suitable in emergency stop applications.​
DDA200B

B-Type RCDs detect a continuous fault current with a low ripple. These devices are recommended for use with drives and inverters.
DDA800

AC, A, A AP-R, A S type available; suitable for assembly with S800 series MCBs

Residual Current Relays

In industrial applications, residual current relays are used in combination with external toroids to detect and evaluate earth fault current. They can also be used in conjunction with protective devices to realize the opening of a circuit ensuring earth leakage current protection.
RD series

Residual current relays for leakage current detection, protection and monitoring functions.
ELR series

Front panel residual current relays for monitoring and protection of the low voltage distribution network through the use of a toroidal transformer.

Accessories

Accessories

Wide selection of accessories to expand the functionalities of this range.

 

How to select the right RCD Type

Infographic
RCD Type overview

 

Documentation

Catalog
Residual current devices
Catalog
Residual current devices (Technical details)

 

Learn more

White Paper
RCDs connected in series

Guide to coordinating up- and down-stream RCDs
White Paper
Earth Fault Protection

Dedicated to the protection against earth faults in low voltage installations.
Presentation
RCDs voltage independent and dependent

Differentiation and guide to a proper selection
White Paper
Electric Shock in presence of water

Dedicated to electric shock when persons are totally or partially immersed in water, or when skin is wet.
People Protection with ABB RCDs

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Residual current selectivity

Discover how to get selectivity between residual current protection devices (RCDs)

 

Services and tools

Product selection tool
e-Configure
SOC (Selected Optimized Coordination tool)

 

Related offering

RCCBs for SMISSLINE TP
RCBOs for SMISSLINE TP
DS-ARC1 (AFDD + RCBO)
Enclosures

 

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