Johnson Controls A19ABC-42 Utility Thermostat 30067439-890 High-grade ceramic insulator prevents voltage

High-grade ceramic insulator prevents voltage leakage to ground for accurate microamp signal readings

ensuring the unit cuts power to the heating elements or compressor if temperatures exceed safe operational thresholds

This specific model is the lead-free updated replacement for the discontinued 0066109

This part is specifically used to power the electromagnetic stems of solenoid and reversing valves within HVAC and refrigeration systems

technicians ensure optimal airflow and sealed combustion chamber performance

Johnson Controls A19ABC-42 Utility Thermostat 30067439-890 High-grade ceramic insulator prevents voltageThe Johnson Controls A19ABC 42 is a heavy duty immersion control utility thermostat engineered for precise temperature management in hydronic heating systems and industrial boiler applications. This SPDT temperature control operates across common line voltages including 120 208 240 Vac, making it a versatile choice for field replacements. It features a broad 100 to 240 degree temperature range with a sensing element consisting of a liquid filled