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The Siemens Building Technology 134-1504 is a dual pole single throw (DPST) low temperature line voltage thermostat. It safeguards heating systems by automatically shutting off operation when temperatures fall below a set point, typically used in applications like preventing frozen pipes. The 134-1504 features two circuits: a main circuit that interrupts power to the heating system and a separate, lower-rated auxiliary circuit that can trigger an alarm or notification system. This thermostat is manually resettable, allowing for easy reactivation once the temperature rises above the set point.
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