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This specific model does not typically include an onboard reset button or fuse
direct installation onto service ports
The Johnson Controls T-4000-2141 is a commercial-grade beige plastic thermostat cover designed specifically for horizontally mounted pneumatic thermostats
this is a standard 24V relay
featuring the same electrical ratings and mounting footprint
Schneider Electric (Barber Colman) AT-520-40 Knob Kit This specific model does notThe Schneider Electric (Barber Colman) AT 520 40 Knob Kit is a critical replacement component for field technicians managing pneumatic control systems and legacy HVAC automation hardware. This setpoint knob kit is specifically engineered to provide a precision fit for Barber Colman TK Series thermostats, ensuring accurate calibration and tactile adjustment of space temperature setpoints. Built from high impact, industrial grade plastic, the AT 520 40
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US$ 55555.50
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