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if the glass breaks
Output selection is managed through onboard dip switches
while the 240Vac coil is protected by a NEMA 4X watertight enclosure
The robust bellows construction ensures reliable modulation even in high-demand industrial environments
Williams P323078 Thermo Switch 321894-709 if the glass breaksWhen you're out in the field servicing a customer's HVAC unit, reliability is non negotiable. The Williams P323078 Thermo Switch is a critical OEM replacement component designed specifically for Williams wall furnaces and direct vent heating systems. This high integrity furnace limit switch acts as a safety or operational control, sensing temperature fluctuations to manage blower activity or provide essential circuit protection. Whether you are
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