Phoenix Contact said it has added the Quint Buffer and Quint DC-UPS uninterruptible power supplies designed for international applications. The units ensure continuous operation of all 24 V devices in electrical installations during power interruptions, preventing unstable power grids from causing failures, the company said. For brief power interruptions lasting up to four seconds, the Quint Buffer module supplies the required current from maintenance-free electrolytic capacitators, while the Quint DC-UPS module responds to longer outages with durable, hybrid, lead-acid storage batteries, according to the company.