The White-Rodgers 3L09-4 Limit Switch is a 1/2-inch bimetal disc control engineered for critical thermal protection in residential furnaces and air handling units

Designed for seamless integration

Precision Thermal Monitoring: Actuates at 300°F (149°C) to prevent catastrophic component failure during rollout events

Standard transformers are generally used to step voltage up or down (e

effectively reducing vibration stress on the piping

Trane BRD0916 Fan Control Board Els PW 17895 The White-Rodgers 3L09-4 Limit SwitchThe Trane BRD0916 Fan Control Board (often cross referenced as BRD00916) is a critical OEM component designed to manage blower motor operations within residential and commercial Trane HVAC systems. Engineered for 24V AC input, this fan timer control board regulates the initiation and delay sequences of the indoor fan motor, ensuring efficient airflow transition between heating and cooling cycles. Field tested for high demand environments, the board