the 0811N-0300A is specifically designed for 208-230/460V 1Ph applications

Enhanced Moisture Protection: The molded housing resists vibration and prevents moisture ingress

It serves as the direct OEM replacement for the S1-TRPU32P7HW-S and is backward compatible with several legacy York controllers

Per the product specifications

When should a technician replace the entire casting instead of just the float

Trane CNT4820 Limit 321042-401 the 0811N-0300A is specifically designedThe Trane CNT4820 is a specialized bi metal disc limit switch designed for critical thermal protection in heating and cooling systems. Engineered as a normally closed (N C) safety control, this SPST (Single Pole Single Throw) device features an auto reset (A R) function, ensuring the circuit automatically closes once temperatures return to a safe range below the 155F open temperature. As an HVAC high limit switch, the CNT4820 is built to handle the