dark blue indicates a dry system

ensuring the electrical continuity and mechanical cycling required for heavy-duty residential or commercial applications

For higher current requirements

making it a versatile HVAC service part for your truck stock

if signal is present but the load side of the relay is open

Schneider Electric (Barber Colman) AT-1103 Guard dark blue indicates a dryThe Schneider Electric AT 1103 is a heavy duty wire thermostat guard engineered to provide superior physical protection for wall mounted climate controls in high traffic or industrial environments. Built with a robust steel base plate and a wire cage design, this thermostat cover prevents unauthorized setpoint adjustment and protects sensitive equipment from mechanical damage or vandalism. For technicians managing commercial HVAC systems, the AT 1103