the 803A (Canadian model C803) provides the heavy-duty reliability expected in professional line voltage HVAC applications

it is engineered to facilitate easy compressor swap-outs and system evacuations without losing the total refrigerant charge

providing rapid response for terminal unit control

this OEM HVAC replacement part ensures the control board receives stable data

Markel 42297-001 Limit L99H008 the 803A (Canadian model C803)Ensure the safe operation of industrial and commercial heating systems with the Markel 42297 001 Duct Heater Limit Switch. This high performance safety component is engineered to monitor internal thermal conditions, providing critical overheat protection by automatically disconnecting the electrical circuit when temperatures reach 210 degrees Fahrenheit (99C). Designed for high amperage applications, this 48 amp limit switch features an automatic