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a significant delta-T indicates internal plugging and a loss of system capacity
it is supported by the system piping and typically does not require an external mounting bracket
preventing back-EMF from damaging sensitive logic boards
This is a manual reset control
Johnson Controls KZ-4000-8 DPDT Relay 30067439-890 a significant delta-T indicates internalThe Johnson Controls KZ 4000 8 DPDT Relay is a heavy duty general purpose component engineered for controlling high wattage electrical loads from lower powered pilot sources. Featuring a 120V AC coil and a Double Pole Double Throw (DPDT) contact arrangement, this relay provides a versatile switching solution for complex HVACR sequences, including simultaneous interlocking of fans, compressors, and auxiliary heating elements. Built with self wiping
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