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the McDonnell & Miller 313900 is the direct
Operational Longevity: High-durability compound resists chemical degradation from combustion byproducts
reducing unnecessary service calls for simple over-temperature events
Contractors trust this part for its consistent switching capabilities and compatibility with various industrial motor control systems
York S1-025-43289-000 Limit Switch the McDonnell & Miller 313900The York S1 025 43289 000 Limit Switch is a critical safety component designed for precise thermal management in high performance HVACR systems. As a genuine L255F 30 Auto Limit Switch, this device is engineered to monitor furnace plenum temperatures and interrupt the electrical circuit if internal heat exceeds its 255F set point. Upon cooling by approximately 30F, the automatic reset capability restores operations, eliminating the need for manual
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