Phoenix Contact 1538627 A 1-channel thermal device circuit breaker is designed to safeguard loads at two different voltage levels - 250V AC and 72V DC. It's specifically meant to act as a safety measure when there's an overload, protecting the equipment from potential harm. The device can be easily installed on standard fuse terminal blocks or interfaces that support flat plug-in fuses of type C, as per ISO 8820-3 standards. Its fixed nominal current rating is set at 12 amps.