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While the SWT3335 is standard for water-based systems
Versatile Compatibility: Engineered specifically for the ETC and ERC series
frequent tripping of the thermal limit switch
making a common wire (C-wire) optional for most 24V installations
Ruskin FL-165A Fusible Link Els PW 29614 While the SWT3335 is standardThe Ruskin FL 165A Fusible Link is a critical safety component engineered for precision thermal response in HVAC fire dampers and ventilation systems. Designed for industrial and commercial reliability, this 165 degree F fusible link acts as a physical failsafe, melting at its designated temperature to trigger the immediate closure of fire and smoke dampers. This mechanical activation effectively isolates ductwork zones, preventing the migration of
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