The PS3500 redundant power supplies are suitable when an unexpected loss of power would be disastrous to operations. Continuous process facilities with demanding conditions necessitate N+1 redundancy, a robust redundancy method that guarantees system functionality will continue even during a supply failure. Additional features include diagnostics and fault indication, automatic load sharing and adjustable voltage. The modular and hot-swappable power supplies are fanless and carry ATEX, IECEx and cULus approvals for Div. 2/Zone 2.