MASTER YOUR CASTLE with your new build or reno project
Enter competition

How to set the primary CT ratio in a VAMP 221



The VAMP 221 only requires the setting of the 1A/5A secondary dip switch. The VAMP 221 uses the secondary current only, which is not dependent upon the primary ratio.

Legacy KB System (APS) Data: RESL210257 V1.0, Originally authored by DaFr on 01/08/2013, Last Edited by DaFr on 01/08/2013
Related ranges: Others protection relays