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The CARRIER 17400401003456 is a genuine OEM terminal block designed for use in Carrier HVAC systems. A terminal block provides a secure, organized connection point for electrical wiring within a unit, allowing multiple conductors to be joined or distributed without direct wire-to-wire splicing. This part maintains the integrity of low-voltage or line-voltage wiring circuits inside the equipment. Licensed HVAC technicians typically install or replace this component during routine electrical service, wiring repairs, or control board replacements. Its compact 1 inch by 1 inch by 1 inch form factor fits within tight equipment enclosures without modification.
This terminal block is suited for residential and light commercial HVAC applications where organized wiring termination is required. It is an OEM-specified part, making it appropriate for warranty-compliant repairs and service calls that require like-for-like component replacement. Technicians servicing Carrier furnaces, air handlers, or packaged units will encounter this style of terminal block in wiring harness assemblies and control sections of the equipment.
Designed as an OEM-style replacement terminal block for Carrier HVAC equipment requiring this part number.
Installation should be performed by a licensed HVAC technician. Disconnect all electrical power to the unit at the disconnect switch or breaker before accessing internal wiring or replacing any terminal block. Verify that wiring connections are secure and properly seated after installation before restoring power. Work should comply with applicable NEC requirements and local electrical codes.
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