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this automatic reset limit switch is a direct replacement for legacy part numbers 18J3701 and 60T81
it is recommended to inspect your existing mounting clips and gaskets during the teardown
Can this module replace 24V DSI controls
The "/U" designation typically refers to retail or universal trade packaging
including NHP23
Carrier P421-4006 Thermistor Start Kit 318973-401 this automatic reset limit switchAs an essential component for high performance service, the Carrier P421 4006 Thermistor Start Kit (OEM Totaline) is the industry standard solution for technicians managing compressor reliability. This 25 Ohm PTC device is engineered to provide the critical additional starting torque required for heavy duty HVAC compressors, effectively acting as a soft start kit to mitigate high inrush current. By connecting in parallel to the run capacitor, it