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The RECTORSEAL n4143 is a 1.5-pole contactor with a 24-volt coil and a 30-amp rating, equipped with lug terminals and quad quick-connect (QC) terminals. Contactors in this class are the switching backbone of residential and light-commercial HVAC equipment, cycling compressors and condenser fan motors on and off under low-voltage thermostat control. The n4143 combines both lug-style and quad QC wiring options in a single unit, giving installers flexibility when field-wiring to existing harnesses or hardwired load connections. It is installed by licensed HVAC technicians as part of condenser unit service or component replacement work.
This contactor is suited for residential and light-commercial HVAC applications where a 24-volt control circuit governs a single-phase or split-phase load. The 1.5-pole design is common in single-phase compressor circuits found in air conditioner and heat pump condensing units. The dual termination style — lug and quad quick-connect — supports a range of field-wiring configurations without adapters. Units with this configuration are typically found in packaged and split-system HVAC equipment across standard residential installations.
Designed as an OEM-style replacement contactor for residential and light-commercial HVAC condensing units requiring a 1.5-pole, 24-volt coil, 30-amp contactor with lug and quad quick-connect terminations.
Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the condensing unit at the disconnect box before removing the existing contactor or handling line-voltage terminals. Verify that coil voltage and load ampacity match the replacement unit before energizing. Follow applicable local electrical codes and NEC guidelines when terminating conductors at lug connections.
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