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providing a secure
suitable for most forced air furnace and rooftop unit HSI systems
including high-pressure R-410A refrigerant applications with a maximum rated pressure of 650 psi
Designed for use in "dry" evaporators
This red color-coded auto reset limit switch functions as a DPST normally closed switch
Armstrong Furnace R40154B004 Limit Switch providing a secureThe Armstrong Furnace R40154B004 Limit Switch is a critical safety component designed for precise thermal regulation within residential heating systems. Engineering for reliability, this L170F 30 limit control features a factory set 140 170F temperature range, ensuring the burner circuit interrupts if internal temperatures exceed safe operational parameters. As an authentic OEM Armstrong replacement part, it provides high limit protection for Allied
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