What does the "dual" rating signify in this part

ensuring it meets UL 1995 plenum use requirements right out of the box

integrating the Littelfuse FLSR series ensures Type 2 "No Damage" protection for motor controllers and simplifies selective coordination in complex electrical distributions

making it an essential component for installations exposed to moisture or wash-down conditions

You can always use a higher voltage rating (440V) to replace a lower one (370V)

York S1-024-19082-017 Heat Relay What does the "dual" ratingThe York S1 024 19082 017 Heat Relay is an essential OEM replacement part engineered for precise thermal management in residential and commercial HVAC systems. As a veteran technician knows, maintaining the integrity of the heating control circuit is critical for preventing short cycling and ensuring efficient heat transfer. This 24V heat relay features robust bimetal actuated contacts and a positive temperature coefficient (PTC) heater, providing the