Linear actuator power supply and remote or switch
There's nothing wrong with a power supply that has 10-15 connections; that's actually fairly typical for supplies in this class. You just need to understand what they're for.

For the power input, there will be connections for line, neutral and ground. There might be a separate "frame ground".

For the output, there will be at least one pair of output terminals (maybe more), possibly a pair of "remote sense" terminals (which help compensate for voltage drops in the wiring), and possibly terminals for remote adjustment or load-sharing.

The datasheet for the power supply should show how to hook it up for various application scenarios.