PRAMAC THREE-PHASE LTS 45A changeover contactor for GA 20000 400 V

Original LTS - Automatic emergency power supply for PRAMAC gas generator.
The LTS automatic emergency power supply automatically switches on the generator in the event of a power failure. This means that important electronic consumers (e.g. heating, freezer, etc.) can be protected and continue to be supplied with power.

https://www.pramac.com/file/47561