100276804 Lochinvar & A.O. Smith Terminal Strip

The 100276804 is the OEM terminal strip / wiring block used in a wide range of Lochinvar and A.O. Smith residential and commercial water heaters. This component provides a secure, organized connection point for incoming power, thermostat circuits, ECO/high‑limit circuits, and internal control wiring.

Designed to meet OEM electrical and heat‑resistance requirements, this terminal strip ensures proper continuity, safe wiring practices, and long‑term reliability. It is the correct replacement for damaged, corroded, or heat‑stressed terminal blocks inside the heater’s control compartment.

Key Features

• OEM terminal strip for Lochinvar & A.O. Smith water heaters

• Provides secure connection points for control and power wiring

• Heat‑resistant, high‑durability construction

• Direct replacement — no modification required

• Restores safe and reliable electrical connections

Common Symptoms Requiring Replacement

• Burnt or discolored terminals

• Loose or intermittent wiring connections

• Heater not powering or cycling correctly

• Failed continuity through terminal block