If the existing plastic insulator is cracked or showing signs of heavy scale buildup

Featuring a broad temperature range of -1°F to 59°F and a fixed 5°F differential

Direct OEM Compatibility: Specifically designed to replace 40L8101 and LB-94701A without field modifications on standard units

The A421AEC-01 automatically determines the mode based on the user-defined On and Off setpoints

York S1-025-26380-000 Terminal Block 326058-755 If the existing plastic insulatorThe York S1 025 26380 000 Terminal Block is a high integrity electrical distribution component engineered for demanding HVACR applications. Designed for seamless integration into York air conditioning units, heat pumps, and furnaces, this OEM replacement terminal block provides a secure landing point for field and factory wiring. Its robust construction minimizes signal distortion and prevents common electrical faults caused by vibration induced