Carrier MRA1210512026 Limit Switch R-410A or differential air switch depending

or differential air switch depending on which port is vented or connected to the source

Precise Head Pressure Regulation: Maintains consistent refrigerant head pressure during low ambient operation to ensure proper oil return and cooling capacity

A #44 orifice typically flows approximately 51

and 58MCB series units

As a primary main control power module

Carrier MRA1210512026 Limit Switch R-410A or differential air switch dependingThe Carrier MRA1210512026 Temperature Limit Switch is a critical single stage safety component designed for precise thermal monitoring within Carrier HVAC systems. As a veteran grade OEM replacement part, this switch is engineered to prevent heat exchanger damage by breaking the 24V control circuit if internal temperatures exceed the factory set safety threshold. It ensures operational reliability in residential heating units, acting as a primary