Johnson Controls A19AAA-40 Temperature Control 30067439-890 A19AGA-37 is identical to A19AGA-37C

A19AGA-37 is identical to A19AGA-37C

If the switch is cool and not tripped but shows an open circuit

and Normally Open (Port 2) configurations

While a fuse provides one-time protection

its 250 PSI and 400°F rating makes it suitable for many low to medium pressure steam applications and boiler water columns

Johnson Controls A19AAA-40 Temperature Control 30067439-890 A19AGA-37 is identical to A19AGA-37CThe Johnson Controls A19AAA 40 is a heavy duty, single stage remote bulb thermostat designed for precision temperature regulation in demanding HVACR environments. Engineered with a liquid filled sensing element, this control provides consistent "repeat" accuracy that remains unaffected by barometric pressure or cross ambient temperature fluctuations. This specific model features a temperature range of 20? F to 80? F (? 5? C to 28? C), making it an