Landis & Gyr
LANDIS & GYR SEL 61.6 Six Stage Step Controller
A nice touch with the 6GK7343-1EX30-0XE0 is the locking mechanism for secure fit.
Landis & Gyr 356-0750 *NEW* Limitem Thermostat 069814 MCC Powers Siemens
The stainless steel material here withstands both hot and cold temperature extremes.