The FDB 11 and FDB 13 are a 110V to 440V series providing RCD and MCB electrical protection suitable for industrial installations – they are modular in configuration so allowing adjacent fixing. Full details can be reviewed here.
Single and Three Phase protection from the FDB 11 and 13 series
![FDB11 RCBO from FDB Electrical offers rail industry standard DC protection](http://www.fdbnews.co.uk/wp-content/uploads/2015/01/FDB2620-fdb11-rcbo-e1459863433310.jpg)