SWT2649 | 240F M/R SPST ROLLOUT SWITCH | Trane

240F M/R SPST Rollout Switch The Trane SWT2649 is a 240F M/R SPST rollout switch. Rollout switches are used in heating, ventilation, and air conditioning (HVAC) systems to monitor the temperature of the air leaving the furnace. If the temperature rises too high, the switch will trip, cutting off power to the furnace and preventing it from overheating. The SWT2649 is a single-pole, single-throw (SPST) switch, meaning that it has two terminals and can be used to control the flow of current in one direction only. It is rated for 20 amps at 240 volts AC. The SWT2649 is a reliable and durable switch that is designed to withstand the harsh conditions of an HVAC system. It is also easy to install and maintain.