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Thermal Security: Integrated auto-reset thermal protection safeguards the motor from overheating due to restricted airflow or capacitor failure
Broad Fluid Range: Rated for a specific gravity range of 0
often supporting both orientations depending on the unit's cabinet design
which allow for secure installation directly onto electrical junction boxes or inside control panels
McDonnell & Miller 93-M Pump Controller 30067439-890 Thermal Security: Integrated auto-reset thermalThe McDonnell & Miller 93 M is a commercial grade combination low water cut off and pump controller designed specifically for steam boiler applications. Engineered for systems with a maximum steam pressure of 150 PSI, this unit features dual snap acting manual reset SPDT switches. These switches provide decisive electrical contact, preventing the rapid cycling or "chattering" often found in mercury free alternatives during turbulent water level
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