Tempstar Contactor for TCA760GKA100 — 40A 24V Coil | Ships Today

Overview

This is a genuine OEM 40 amp contactor (part number 1176763) for the Tempstar TCA760GKA100 condensing unit. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. A 24-volt control signal pulls in the coil, closing the line-voltage contacts and delivering power to the compressor. Over thousands of cycles the contact points pit, burn, and weld, while the coil can fail open. Common failure symptoms include a unit that hums but won't start, a compressor that runs continuously because the contacts have welded shut, chattering or buzzing at the contactor, and visible arcing or burnt terminals. Replacing a worn 40A contactor restores reliable, clean switching and protects the compressor from low-voltage and single-phasing damage.

Specifications

Compatibility

Engineered as the factory replacement for the Tempstar TCA760GKA100 air conditioning condenser. Because ICP, Heil, Tempstar, and Comfortmaker units share the same platform, this 40A contactor also services many equivalent Heil and Comfortmaker condensers of the same tonnage and electrical class. Always confirm the amp rating and 24V coil against the part you are removing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.
2. Access — Remove the condenser service panel to expose the control compartment.
3. Document — Photograph every wire and terminal position before disconnecting anything.
4. Remove — Label and disconnect the line, load, and 24V coil leads, then unscrew the old contactor from the mounting bracket.
5. Install — Mount the new 40A contactor and reconnect each wire exactly per your photo.
6. Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan energize.

Signs You Need a Replacement

• Unit hums or buzzes but the compressor will not start.
• Compressor runs nonstop because contacts have welded closed.
• Visible pitting, burning, or melted plastic on the contactor.
• Chattering coil or intermittent cooling.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.