What does the L330F designation mean for this limit switch

while typically used for steam

and as a genuine replacement part

the top flange is designed to ISO 5211 standards

Resideo RA832A1066 Switching Relay 322056-301 What does the L330F designationThe Resideo RA832A1066 Switching Relay is a heavy duty solution designed for hydronic systems requiring seamless interface between low voltage controllers and high voltage loads. This DPST switching relay features a 120 Vac input and includes an integral transformer, providing power for 24V control circuits without requiring external power supplies. Engineered for versatility, it controls one line voltage load while the second pole handles either low