Carrier MRA1210512026 Limit Switch R-410A 3 certified

3 certified

What is the difference between the H19NA-4 and the H19NA-4C

The robust circuitry is designed to withstand the thermal stressors found in modern heat exchangers

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

The paired TFRB24 actuator delivers 22 in-lb of torque and operates on 24VAC/DC

Carrier MRA1210512026 Limit Switch R-410A 3 certifiedThe 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