The 243-8-HP is a high-pressure model

58" WC calibration for consistent safety circuit operation

75 and 4 psi/°F to match specific zone requirements

delivering positive dead-end lock-up to protect downstream equipment

02HP motor provides the exact torque profile required for low-profile evaporator units and specific condenser configurations

Trane SWT1263 Limit Switch 321702-401 The 243-8-HP is a high-pressureWhen you're dealing with a Trane SWT1263 Limit Switch that has failed, you'll see common symptoms like the blower running continuously or the burner short cycling. This 180 210F AUTO Limit Switch is a critical safety component calibrated to open the circuit at 210F and reset automatically once the plenum temperature drops to 180F. As a genuine OEM replacement part, the SWT1263 is the specific drop in successor for the Trane C340056P09 and SWT01263,