In this case, DC DC switching regulator has 1 outputs configured to it. DC DC switching regulators like this one generate Fixed outputs on their output pins to handle the power management. It has a 10-pin voltage regulator dc to dc.
QUINT-PS/12DC/24DC/5 Features
1 outputs
QUINT-PS/12DC/24DC/5 Applications
There are a lot of PHOENIX CONTACT QUINT-PS/12DC/24DC/5 Voltage Regulators applications.