Siemens Building Technology 188-0030 Thermostat 319852-301 this motor grounding ring creates

this motor grounding ring creates a path of least resistance

High-Temperature Durability: Specialized ceramic insulation prevents electrical leakage in extreme heat

Weather-Resistant Build: The totally enclosed housing protects internal components from rain

As an externally equalized thermostatic expansion valve

and SNA400 series units

Siemens Building Technology 188-0030 Thermostat 319852-301 this motor grounding ring createsThe Siemens 188 0030 is a heavy duty unit mounted pneumatic thermostat designed specifically for high low temperature control in HVAC terminal units like fan coils and induction units. This TH 188 HC model features a direct acting (DA) heating and reverse acting (RA) cooling sequence, making it a critical component for two pipe changeover systems. Engineered with a bimaterial sensing element, it provides reliable proportional control and pneumatic