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The American Standard SWT03964 is an OEM limit switch designed as a safety device to shut down equipment when temperature or pressure exceeds the switch's rating. It replaces old part numbers SWT03964, SWT3964, and D345275P02. This blower inducer limit switch is used on S9X2B060U3PSAAA/S9X1B060U4PSBAA/S9V2B060U3VSACA/S9V2B060U3PSBAA furnaces.
The American Standard limit switch is a safety component that shuts down equipment when temperature or pressure limits are exceeded.
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