ABB

Residual Current Devices RCD Blocks

Flexibility with uncopromising Safety
Residual Current Blocks – DDA

The DDA Residual Current Blocks DDA200 and DDA800 facilitates the customers to assemble the product with S200/S800 MCBs in order to combine the protection against indirect contacts, offered by a standard RCCBs, with the protection against short circuit and overloads. This flexibility is an added advantage for the ones who desire to maintain the stock level at a minimum, providing a solution for wide range of applications with a handful of RCD blocks.

DDA block are mechanically manufactured to prevent an ill coupling between the block and the breaker: in fact, the rating of the block should always be greater or equal than the rating of the MCB. The side plastic clamp permits a quicker assembly of the block on the MCBs, then a button preserves it from possible disconnections.

Main benefits
 Apt to be connected with the proper MCB preventing wrong coupling
 Fast connection of the incoming terminals of the MCB
 The installation is safe as the coupling elements are not losable
 Complete range of products, even selective
 Remote tripping terminals on 63 A versions
 Test pushbutton to check the responsiveness of the device

Main features
 Complete protection against all kinds of leakage currents (AC, A, B, A-APR types available)
 Rated currents from 25A up to 63 A in DDA200 and up to 100A with DDA800. The 125A are available as factory fitted RCBO s
 Sensitivities in 30mA, 100mA, 300mA, 500mA and 1A
 Selective devices

 

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