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the 3B1B is rated for up to 400 psig at 406°F
making it a drop-in upgrade for existing HVAC control systems
Thermal Resilience: Rated for a 1500°F maximum hot junction temperature
which eliminates the need for external wiring or battery maintenance
replacing an aged or drifting OEM sensor with this genuine Marley component ensures factory-spec thermal protection
Carrier HC35MU115 Motor 321702-401 the 3B1B is rated forThe Carrier HC35MU115 is a high performance OEM draft inducer motor specifically engineered for residential furnace venting applications. Operating at 115V with a power rating of 1 11 HP, this electric motor maintains a fixed speed of 3350 RPM to ensure proper combustion gas exhaustion and consistent static pressure within the heat exchanger. Designed with a Clockwise (CW) rotation and a durable sleeve bearing system, this unit is a critical component
