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The junction block allows you to wire a limit switch in series with the thermocouple and power unit
ensuring reliable contact closure even during minor voltage fluctuations
reducing mechanical wear on the primary ignition control
Durable Construction: Epoxy-molded design protects internal windings from vibration and environmental contaminants
Common Installation Questions: Which probes are compatible with the 3B3B fitting
Schneider Electric (Barber Colman) 2390-510 Position Switch R-410A The junction block allows youThe Schneider Electric (Barber Colman) 2390 510 is a specialized pneumatic minimum position switch designed for commercial HVAC systems requiring precise proportional action control. Engineered with an internal high pressure selector relay, this unit is specifically calibrated for a 10 psig span output, making it the industry standard for establishing a minimum ventilation air setpoint. By integrating this switch into your pneumatic circuit, you